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Journal articles on the topic 'Structural dynamics Testing'

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Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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1

Skull, L. C., and C. R. Wright. "VALID STRAIN MEASUREMENTS FOR STRUCTURAL DYNAMICS TESTING." Experimental Techniques 25, no. 3 (May 2001): 42–44. http://dx.doi.org/10.1111/j.1747-1567.2001.tb00024.x.

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2

Hallauer, W. L., and S. E. Lamberson. "A LABORATORY PLANAR TRUSS FOR STRUCTURAL DYNAMICS TESTING." Experimental Techniques 13, no. 9 (September 1989): 24–27. http://dx.doi.org/10.1111/j.1747-1567.1989.tb01051.x.

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3

SUHIR, E. "STRUCTURAL DYNAMICS OF ELECTRONIC SYSTEMS." Modern Physics Letters B 27, no. 07 (March 19, 2013): 1330004. http://dx.doi.org/10.1142/s0217984913300044.

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The published work on analytical ("mathematical") and computer-aided, primarily finite-element-analysis (FEA) based, predictive modeling of the dynamic response of electronic systems to shocks and vibrations is reviewed. While understanding the physics of and the ability to predict the response of an electronic structure to dynamic loading has been always of significant importance in military, avionic, aeronautic, automotive and maritime electronics, during the last decade this problem has become especially important also in commercial, and, particularly, in portable electronics in connection with accelerated testing of various surface mount technology (SMT) systems on the board level. The emphasis of the review is on the nonlinear shock-excited vibrations of flexible printed circuit boards (PCBs) experiencing shock loading applied to their support contours during drop tests. At the end of the review we provide, as a suitable and useful illustration, the exact solution to a highly nonlinear problem of the dynamic response of a "flexible-and-heavy" PCB to an impact load applied to its support contour during drop testing.
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4

Wei, Jian Zheng, Hui Feng Tan, Jian Xin Yu, and Xing Wen Du. "Dynamic Testing and Analysis of Inflatable Beams." Applied Mechanics and Materials 226-228 (November 2012): 546–52. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.546.

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Dynamic testing of an inflatable beam has been performed to evaluate structural natural frequencies and modal damping ratios. The inflatable beam has a pattern of six composite fiber strips inside thin-film structure that increases its local stiffness that the structure can be self-supporting in the gravity environment when the internal pressure is released. A measurement setup was installed, and the dynamic testing was performed in this self-supporting state. Dynamic characters of the beams were tested with internal pressure or not when the beam had a 2.0kg mass on the top. Moreover, the dynamic characters before rolled up were contrasted to one after. The experimental results indicate that the self-supporting inflatable beams had better bending stiffness, and the curl folding process had an impact on the dynamic characteristics of the inflatable beam. The pressure affection is not obvious on dynamics of the beam.
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5

JAHED-MOTLAGH, MOHAMMAD R., BEHNAM KIA, WILLIAM L. DITTO, and SUDESHNA SINHA. "FAULT TOLERANCE AND DETECTION IN CHAOTIC COMPUTERS." International Journal of Bifurcation and Chaos 17, no. 06 (June 2007): 1955–68. http://dx.doi.org/10.1142/s0218127407018142.

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We introduce a structural testing method for a dynamics based computing device. Our scheme detects different physical defects, manifesting themselves as parameter variations in the chaotic system at the core of the logic blocks. Since this testing method exploits the dynamical properties of chaotic systems to detect damaged logic blocks, the damaged elements can be detected by very few testing inputs, leading to very low testing time. Further the method does not entail dedicated or extra hardware for testing. Specifically, we demonstrate the method on one-dimensional unimodal chaotic maps. Some ideas for testing higher dimensional maps and flows are also presented.
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6

Carneiro, J. O., F. J. Q. de Melo, J. T. Pereira, and V. Teixeira. "Pseudo-Dynamic Method for Structural Analysis of Automobile Seats." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 219, no. 4 (December 1, 2005): 337–44. http://dx.doi.org/10.1243/146441905x52964.

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This work describes the application of a pseudo-dynamic (PsD) method to the dynamic analysis of passenger seats for the automotive industry. The project of such components involves a structural test considering the action of dynamic forces arising from a crash scenario. The laboratory certification of these automotive components consists essentially on the inspection of the propagation and extension of plastic deformations zones in metallic members of the seat structure as consequence of the mutual action between the seat and the passenger fastened to the seat via seat belt anchorages. This work presents a relatively simple experiment using PsD techniques as a novel method to perform a test equivalent to the dynamic model of a dummy-seat pair subjected to impulsive loads from a car crash. Essentially, the PsD test method is a hybrid and hierarchic computer-driven testing procedure where a numerical algorithm and experimental step are used and combined on-line in order to solve a problem in the scope of structural dynamics. The implementation of the method is not expensive and has the leading advantage of offering the operator a total control of any intermediate structure state during the test still keeping the realism of a real dynamic testing.
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7

Chau, Vu Minh, and Hien Bich Vo. "Structural Dynamics Analysis of 3-U CubeSat." Applied Mechanics and Materials 894 (September 2019): 164–70. http://dx.doi.org/10.4028/www.scientific.net/amm.894.164.

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The development of CubeSats has been advanced significantly during the past two decades for both scientific research and industrial purposes. During the manufacturing process, every CubeSat must satisfy various system requirements in which the structural analysis is one of the most vital necessity in order to assure a normal operation of the CubeSat during its working time in space. In the conceptual design phase, structural dynamics is a mandatory step to determine the natural frequencies of individual bodies, the deformation and stress induced at the corresponding vibration modes to prevent structural failure. In this work, IGOSat, a 3-Unit CubeSat, which was developed at the Paris Diderot University is exanimated in term of modal, harmonic response, and random vibration analysis at the time of ground testing as well as the launching phase using ANSYS software. These numerical simulations conducted according to the CubeSat Design Specification and the system requirements of QB50 project. The minimum natural frequency of the CubSat obtained to be 363.17 (Hz), which passed the required frequency of 90 (Hz). Moreover, the Harmonic and Random vibration analyses indicate that the peak response of normal stress, as well as deformation values obtained, are far lesser compared to the yield strength of the frame structure and subsystem materials. Hence, our numerical analysis found that the CubeSat remains intact during the launch environment.
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8

Okuma, Masaaki, Ward Heylen, Hisayoshi Matsuoka, and Paul Sas. "Identification and Prediction of Frame Structure Dynamics by Spatial Matrix Identification Method." Journal of Vibration and Acoustics 123, no. 3 (March 1, 2001): 390–94. http://dx.doi.org/10.1115/1.1377020.

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This paper presents the results of using an experimental spatial matrix identification method to predict the dynamics of a frame structure under various boundary conditions. The single-input-multiple-output frequency response functions (FRFs) of the test structure under the free-free boundary condition are measured by hammer testing. Using the FRFs, a set of spatial matrices is constructed in order to represent the structural dynamic characteristics of the system by the new method. Using the spatial matrices, the dynamic characteristics of the test structure under the boundary condition of clamping 4 points is predicted. The prediction is adequately accurate for practical application. The results of the prediction demonstrate that the spatial matrices identified by this method can be used for structural modification and substructure synthesis in the field of computer-aided mechanical engineering.
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9

Parker, Samuel D., Michael R. Haberman, and Daniel R. Roettgen. "A technique for measurement of ultrasonic waves propagating in time-varying media." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A294. http://dx.doi.org/10.1121/10.0016327.

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Laser Doppler Vibrometry (LDV) is often used in nondestructive testing to make high-fidelity, non-contact structural dynamic measurements. However, synchronized measurement on slow, structural dynamics (SD) and fast, ultrasonic (US) time scales can yield additional useful information about the overall condition of elastic structures. This work presents a technique, Dynamic Asymmetric Transmission Measurement (DATM), that enables time-aligned measurements of large-scale structural dynamics via LDV and small-scale ultrasonic signals to provide information at a particular global dynamic state of an elastic structure. This approach is applicable to structural health monitoring and generalizable to the measurement of guided ultrasonic waves propagating in structural components subjected to time-varying stress states. We demonstrate the utility of DATM by detecting and characterizing time-varying stress conditions caused by local nonlinearity due to surface-breaking cracks resulting in time-varying asymmetric transmission of US signals in beam and plate structures. The test methodology to synchronize LDV and US data is presented together with example measurements. [Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.]
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10

Bai, Liang, Tian Hua Zhou, and Xing Wen Liang. "Study on Restoring Force Models of Steel High Performance Concrete Composite Structural Wall." Key Engineering Materials 517 (June 2012): 323–30. http://dx.doi.org/10.4028/www.scientific.net/kem.517.323.

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Steel high performance concrete (SHPC) structural wall was a combination of steel and high performance concrete. They can give full play to the advantages of steel and high performance concrete and have better dynamic behavior. Several specimens of SHPC structural walls with different parameters were tested under constant axial loading and horizontal cyclic loading. The testing phenomena and failure mechanics of those walls were compared and analyzed. On the basis of theoretic formulas and testing data, the main characteristic points and the law of stiffness degradation were presented, then, the tri-linear and four linear restoring models were built and provided. At last, the calculation formulas of stiffness parameter in restoring force model at different stages of deformation were presented. The results show that the declined strength stage of skeleton curve of specimens is related to the yielding strain of boundary steel, axial load ratio and stirrup content. The restoring force model of SHPC structural wall is thus formed for the application of nonlinear dynamics analysis as well as static structural calculations.
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11

Liu, Jie, Shirley J. Dyke, Hong-Jun Liu, Xiu-Yu Gao, and Brian Phillips. "A novel integrated compensation method for actuator dynamics in real-time hybrid structural testing." Structural Control and Health Monitoring 20, no. 7 (September 27, 2012): 1057–80. http://dx.doi.org/10.1002/stc.1519.

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12

Duris, Rastislav. "A Determination of Material Properties of Flexible Structures Using EMA and FEM Analysis." Applied Mechanics and Materials 693 (December 2014): 293–98. http://dx.doi.org/10.4028/www.scientific.net/amm.693.293.

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Dynamic behavior of mechanical structures results from complex interactions between applied forces and the stiffness properties of the structure. Currently, many problems of structural dynamic analysis are solved using Finite Element Method (FEM). However, in recent years, the implementation of the Fast Fourier Transform (FFT) in low cost computer-based signal analyzers has provided a powerful tool for acquisition and analysis of vibration data. This article discusses combination of two approaches to structural dynamics testing; the experimental part which is referred to as Experimental Modal Analysis (EMA), respectively the analytical part, which is realized by Finite Element Analysis (FEA). Main goal of the paper is calculation of material properties from experimentally determined modal frequencies.
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13

Dornsife, Ralph J. "Ground‐Based Testing Dynamics for Prismatic Beam in Microgravity." Journal of Aerospace Engineering 4, no. 2 (April 1991): 165–83. http://dx.doi.org/10.1061/(asce)0893-1321(1991)4:2(165).

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14

Dao, T. D., Q. Serra, S. Berger, and E. Florentin. "Error Estimation of Polynomial Chaos Approximations in Transient Structural Dynamics." International Journal of Computational Methods 17, no. 10 (February 6, 2020): 2050003. http://dx.doi.org/10.1142/s0219876220500036.

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Usually, within stochastic framework, a testing dataset is used to evaluate the approximation error between a surrogate model (e.g., a polynomial chaos expansion) and the exact model. We propose here another method to estimate the quality of an approximated solution of a stochastic process, within the context of structural dynamics. We demonstrate that the approximation error is governed by an equation based on the residue of the approximate solution. This problem can be solved numerically using an approximated solution, here a coarse Monte Carlo simulation. The developed estimate is compared to a reference solution on a simple case. The study of this comparison makes it possible to validate the efficiency of the proposed method. This validation has been observed using different sets of simulations. To illustrate the applicability of the proposed approach to a more challenging problem, we also present a problem with a large number of random parameters. This illustration shows the interest of the method compared to classical estimates.
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15

Chen, Guo Jin, You Ping Gong, Tin Tin Liu, Hui Peng Chen, and Jing Ni. "Research and Application of the Structural Optimization Design Technique for the Large and Efficient Band Sawing Machine." Advanced Materials Research 690-693 (May 2013): 2901–5. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2901.

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This paper takes the large band sawing machine GB42500H as the research object, and establishes the dynamics models of its various parts. Respectively, the relative research is done from the theoretical modal analysis and the dynamic performance testing. According to the analysis results, the structure or geometry improvement scheme of the parts is proposed. The paper also studies preliminarily the dynamic characteristics of the large band sawing machine GB42500H. During the analysis, the models of the parts and the whole are established using the finite element method to optimize the structures of the parts and the whole. That has undoubtedly a very important significance for improving the dynamic performance for the new machine tools structure, increasing the processing accuracy, and shortening the development cycle and costs.
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16

Trendafilova, I. N. "A review of the paper ‘Some insights into the dynamics of defective structures’ by J. A. Brandon." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 1 (December 1, 2008): 157–74. http://dx.doi.org/10.1243/09544062jmes1139.

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John Brandon has a long-standing record of leading internationally recognized research in the area of structural and non-linear dynamics as well as on the analysis of the mechanics and dynamics of defective structures. His consistent research in these areas is aimed at an in-depth understanding of the dynamics of damaged structures combined with the mechanics of crack development. He initiated and led the Cardiff research group on non-linear structural dynamics and damage analysis and detection for many years. His article ‘Some insights into the dynamics of defective structures’ is an excellent example of assembling and presenting together a lot of the research in the vibration modelling and experimental testing of damaged structures. It presents and summarizes the recent findings and trends in non-linear dynamics of defective structures. The reviewed article focuses mainly on the modelling and the analysis of non-linear effects in structural dynamics as well as in the dynamics of damaged structures, which have mostly been neglected in the recent literature.
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17

Adedokun, Omolola A., Amy L. Childress, and Wilella D. Burgess. "Testing Conceptual Frameworks of Nonexperimental Program Evaluation Designs Using Structural Equation Modeling." American Journal of Evaluation 32, no. 4 (March 10, 2011): 480–93. http://dx.doi.org/10.1177/1098214011401368.

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A theory-driven approach to evaluation (TDE) emphasizes the development and empirical testing of conceptual models to understand the processes and mechanisms through which programs achieve their intended goals. However, most reported applications of TDE are limited to large-scale experimental/quasi-experimental program evaluation designs. Very few (limited) examples of the relevance of TDE to nonexperimental program evaluation designs exist in literature. Using the method of structural equation modeling to analyze data from the Interns for Indiana (IfI) program, this study demonstrates how evaluation practitioners can test logical and sequential relationships among tiers of outcomes of nonexperimental programs, especially programs with limited datasets. The study also describes how the empirical feedback can be used to understand program dynamics and improve program implementation and evaluation.
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18

Wang, Xiang Yang, Kao Shan Dai, and Yi Chao Huang. "Field Testing of a Wind Turbine Tubular Tower and Structural Design of a Space Frame Steel Tower." Applied Mechanics and Materials 405-408 (September 2013): 1077–84. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.1077.

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Wind energy industry has been growing tremendously in recent years. Tubular steel towers are currently dominant supporting structures for wind turbines. With the increase of the converter capacity, there is a great demand for higher supporting towers. However, structural vibrations in extreme wind events tend to become a major concern during tower design. To study wind turbine tower dynamics, an existing tubular steel tower was tested. Vibrational frequencies and damping ratios were identified. To avoid unexpected dynamic problems, a space frame steel tower has been proposed for supporting larger wind turbines. It is a structural system that can be assembled on-site by using prefabricated beams, columns, and brace members. A typical space frame steel tower was designed in this paper. Static loading, modal and buckling analyses of the tower were presented. It is expected to introduce engineers and designers more options for wind turbine tower design.
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19

Martinho, Vítor João Pereira Domingues. "Testing for Structural Changes in the European Union’s Agricultural Sector." Agriculture 9, no. 5 (May 1, 2019): 92. http://dx.doi.org/10.3390/agriculture9050092.

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Over recent decades several European and global occurrences have had an impact on the European Union’s economic sectors, and subsequently on farms. In fact, the various Common Agricultural Policy (CAP) reforms, namely those since 1992, and the global financial and economic crises, specifically after 2008, seem to have had several effects on the dynamics of the entire European Union agricultural sector and on the performance of farms. However, there is doubt as to whether these events were enough to promote structural breaks in European Union farms. In this way, the main objective of this study is to analyse both the known and unknown structural breaks in European farms, between 1989 and 2016. To this purpose, data from the Farm Accountancy Data Network (FADN) from the twelve former member-states (the countries with the longer time series) and methodologies based on the Chow test and on the Quandt likelihood ratio (QLR) were considered. The results show that the structural breaks are different across the several twelve former European Union countries and among the several variables considered. In any case, the financial and economic crises, as well as changes in the European Union’s methodologies relative to statistical information, seem to have had a greater impact on the European farms than the several CAP reforms (with the exception of the reform of 1992 the trade liberalization). However, the several consequences of all these European and world events on European farms seem to be delayed for some years.
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20

Rodgers, Geoffrey W., Oliver Mesnil, Jose Chanchi, Gregory A. MacRae, Charles Clifton, and J. Geoffrey Chase. "Generalised nonlinear modeling of unstable stick-slip force reduction effects in friction energy dissipation devices." Bulletin of the New Zealand Society for Earthquake Engineering 47, no. 3 (September 30, 2014): 217–23. http://dx.doi.org/10.5459/bnzsee.47.3.217-223.

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The Sliding Hinge Joint (SHJ) is an Asymmetric Friction Connection (AFC) developed to create a repeatable, efficient means of dissipating seismic response energy and reducing structural damage without yielding of the structural frame elements. Testing has demonstrated stable efficient hysteretic behaviour. However, it is necessary to fully characterise their dynamic behaviour including any less stable aspects observed in the response of these devices for selected materials. This observed behaviour may reduce device force and energy dissipation, creating an influence on the overall structure that should be fully understood and accounted for in design. This research models the hysteretic behaviour of a SHJ with a zinc anti-corrosion coating that demonstrates less than fully stable experimental dynamic behaviour in contrast to many other SHJ material choices. The model developed uses a stick-slip mechanism based on a variable friction coefficient to capture the observed dynamics with an overall Menegotto-Pinto dynamic hysteretic model. The overall results show how the model may be realistically extended to a more general model that captures observed non-linear dynamics in these and similar friction devices, and yield new insight and design tools for use with these devices.
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21

Liu, De-Shin, Jen-Chang Lu, Meng-Shiun Tsai, Chih-Ta Wu, and Zhen-Wei Zhuang. "Development of a Novel Dynamic Modeling Approach for a Three-Axis Machine Tool in Mechatronic Integration." Machines 10, no. 11 (November 21, 2022): 1102. http://dx.doi.org/10.3390/machines10111102.

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This paper proposes a novel, fast, and automatic modeling method to build a virtual model with minimum degrees of freedom (DOFs) without the need for FE models or human judgment. The proposed program uses the iterative closest point (ICP) algorithm to analyze the mode shape vector of structural dynamic characteristics to define the position and DOFs of the joints between structural components. After the multi-body dynamics model was developed in software, it was converted into an SSM to connect the servo loop model. Then, the mechatronic integration analysis was performed to verify the dynamic characteristics of the tool center point (TCP) and the workbench in the experiment and simulation. The model created by the proposed identification process has a small DOF and can accurately simulate the dynamic characteristics of a machine. This model can be used for dynamic testing and control strategy development in mechatronic integration.
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22

Luo, Bo, Bin Li, Xin Yong Mao, and Hui Cai. "Modal Testing for Heavy Machine Tool Using Active Excitation." Applied Mechanics and Materials 536-537 (April 2014): 1326–32. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1326.

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For application in large machine tools, the machined part quality, accuracy as well as machining speed depende greatly on the dynamics of the structure. In this paper, an active-excitation modal analysis (AEMA), using inertial force of the moving slider to excite the structural modes, is proposed. Modal parameters of the machine tool structure estimated by AEMA are experimentally validated. Since the artificial excitation produced by elaborate excitation equipment is replaced by the inertial force of the slider, the proposed method is much more practical and economical than traditional methods.
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23

Gauthier, Pauline, Angelo Furno, and Nour-Eddin El Faouzi. "Road Network Resilience: How to Identify Critical Links Subject to Day-to-Day Disruptions." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 1 (August 30, 2018): 54–65. http://dx.doi.org/10.1177/0361198118792115.

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Disruptive events occur on road networks on a daily basis and affect traffic flow. Resilience analysis aims to assess the consequences of such disruptions by quantifying the ability of a network to absorb and react to adverse events. In this paper, we advance a methodological approach based on resilience stress testing and a dynamic mesoscopic simulator. We aim to identify and rank the links most critical to the overall performance of the road network, taking into account the dynamic properties of road traffic and focusing on day-to-day disruptions. As a metric to quantify road network performance in the presence of such disruptions, we use the increase in overall travel cost. We then compare our approach with purely topological approaches. We discuss the advantages and drawbacks of the different analyzed metrics. We prove that link ranking varies greatly depending on the metric. Specifically, the proposed stress testing methodology can produce very accurate results by taking into account demand and congestion, but requires computationally intensive simulations, being therefore prohibitive even on medium-sized networks. Conversely, purely static topological metrics can be inaccurate if they do not take into account traffic demand and network dynamics. Our study highlights the need for joining traditional traffic-agnostic topological resilience analysis with demand-aware dynamic stress testing techniques.
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24

Paultre, Patrick, Omar Chaallal, and Jean Proulx. "Bridge dynamics and dynamic amplification factors — a review of analytical and experimental findings." Canadian Journal of Civil Engineering 19, no. 2 (April 1, 1992): 260–78. http://dx.doi.org/10.1139/l92-032.

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The dynamic amplification factor (DAF) is an important parameter in the design of highway bridges and yet no worldwide consensus has been reached so far as to its value. Some disagreement exists between provisions of various national bridge codes. This is because the DAF depends, in addition to the maximum span or the natural frequency, on many other parameters that are difficult to take into account with reasonable accuracy. Vehicle speed, weight, and dynamic characteristics, the state of the structure, roadway roughness, expansion joints, the type of bridge supports, soil–structure interaction, and influence of secondary elements are some aspects influencing the DAF. This study reviews the analytical and experimental findings on bridge dynamics and the evaluation of the DAF. Key words: bridges, vibrations, bridge testing, bridge design codes, dynamic amplification factor.
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Xu, Ronald X., Joseph Ewing, Hamid El-Dahdah, Bei Wang, and Stephen P. Povoski. "Design and Benchtop Validation of a Handheld Integrated Dynamic Breast Imaging System for Noninvasive Characterization of Suspicious Breast Lesions." Technology in Cancer Research & Treatment 7, no. 6 (December 2008): 471–81. http://dx.doi.org/10.1177/153303460800700609.

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We have developed a portable, handheld, integrated, dynamic breast imaging system that integrates a near infrared tissue oximeter, clinical ultrasound, and two pressure sensors for noninvasive detection of pressure-induced structural and functional dynamics of suspicious breast lesions. A series of benchtop tests were conducted to validate multiple performance characteristics of the integrated dynamic near infrared/ultrasound breast imaging system (idNIRUS), including the reconstruction of the absorptive heterogeneities and the generation of the dynamic compression stimuli. In absorptive heterogeneity testing, we reconstructed the absorption coefficients of transparent polypropylene tubing circulated with a skim milk-India ink mixture and embedded in a gel wax tissue simulating phantom. High linear correlations (R2 greater than 0.989) were observed between the reconstructed and the measured absorption coefficients of the embedded tubing. In dynamic compression testing, five volunteer operators generated ten successive compression sessions by compressing the idNIRUS imager on a breast self examination wearable model following the computer simulated pressure profile. The manually generated pressure profiles demonstrated an accuracy of 95.7% and operator-dependent variation of less than 5%. The results of the current benchtop tests will help to optimize the most appropriate testing conditions for our future planned clinical trial.
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26

Liang, Huiqi, Wenbo Xie, Peizi Wei, Dehao Ai, and Zhiqiang Zhang. "Identification of Dynamic Parameters of Pedestrian Walking Model Based on a Coupled Pedestrian–Structure System." Applied Sciences 11, no. 14 (July 12, 2021): 6407. http://dx.doi.org/10.3390/app11146407.

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As human occupancy has an enormous effect on the dynamics of light, flexible, large-span, low-damping structures, which are sensitive to human-induced vibrations, it is essential to investigate the effects of pedestrian–structure interaction. The single-degree-of-freedom (SDOF) mass–spring–damping (MSD) model, the simplest dynamical model that considers how pedestrian mass, stiffness and damping impact the dynamic properties of structures, is widely used in civil engineering. With field testing methods and the SDOF MSD model, this study obtained pedestrian dynamics parameters from measured data of the properties of both empty structures and structures with pedestrian occupancy. The parameters identification procedure involved individuals at four walking frequencies. Body frequency is positively correlated to the walking frequency, while a negative correlation is observed between the body damping ratio and the walking frequency. The test results further show a negative correlation between the pedestrian’s frequency and his/her weight, but no significant correlation exists between one’s damping ratio and weight. The findings provide a reference for structural vibration serviceability assessments that would consider pedestrian–structure interaction effects.
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Schafer, Lothar, Yury I. Tarasov, Aleksandr V. Koshelev, and Anatoly A. Ischenko. "ULTRAFAST ELECTRON CRYSTALLOGRAPHY AND NANOCRYSTALLOGRAPHY: FOR CHEMISTRY, BIOLOGY AND MATERIALS SCIENCE. PART I. ULTRAFAST ELECTRON CRYSTALLOGRAPHY." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 5 (June 23, 2017): 4. http://dx.doi.org/10.6060/tcct.2017605.5608.

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The direct probing and understanding of the dynamics of chemical and biological processes occurring in condensed matter, is currently in its early stages. Progress in this field has been pushed by the development of methods for the study of the structural dynamics of matter in a state far from equilibrium, including extreme states. The forthcoming information serves as the basis for testing new theoretical approaches to the description of the substance in casually connected triad "structure-dynamics-function". Observation of the dynamic behavior of matter in the space-time continuum on ultrashort time scales is a necessary first step in the explanation and, ultimately, control of far from equilibrium processes, and functionality of the systems studied. The method of ultrafast electron crystallography (UEC) makes it possible to investigate transient nonequilibrium structures, which yield decisive information about the structural dynamics of the phase transitions and coherent dynamics of the nuclei in the solid state, on the surface, and in macromolecular systems. In recent years, the electron bunch path length in the UEC apparatus diminished significantly, while the accelerating voltage increased considerably. Therefore, femtosecond electron pulses were obtained. A technique of radio frequency grouping of electrons was proposed to increase the electron pulse brightness. The method of electron field emission was used to increase the spatial coherence, and ponderomotive wave front acceleration was applied to reduce the mismatch between the velocities of the light and electron pulses and to contract the electron bunches. These achievements have opened up new possibilities for studying the coherent structural dynamics – atomic and molecular movie with femtosecond temporal resolution. The results of several internationally renowned research groups are included and cited.
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28

Presle, Gerard, Werner Hanreich, and Paul Mittermayr. "Austrian Track Testing and Recording Car EM 250: Source for Wheel-Rail Interaction Analysis." Transportation Research Record: Journal of the Transportation Research Board 1713, no. 1 (January 2000): 22–28. http://dx.doi.org/10.3141/1713-04.

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The dynamic behavior and ride quality of railway vehicles are influenced by track quality. Monitoring riding comfort and safety is a major task of the Austrian Federal Railway’s Infrastructure Division. The track testing and recording car EM 250 provides a proven measuring instrument for modern track maintenance. Equipped with an inertial measuring system and an optical track gauge measuring system, the track testing and recording car can measure the track alignment and rail profiles at speeds of up to 220 km/h. The measurements, taken every 25 cm, provide binary data files that can be processed offline. Track quality parameters are measured as functions of vehicle acceleration and are stored in a database from which they can be easily retrieved from any computer in the company. The Bureau for Applied Mechanics and Mathematics was commissioned by the Austrian Federal Railways to develop the SIMULAT program for analyzing rolling stock dynamics. In developing the model, special consideration was given to the exact mathematical description of all elements affecting vehicle dynamics. Using an optical measuring system, the track testing and recording car determines the rail cross section on the basis of readings at individual points. The simulation program links the curve with the track data, allowing the analysis of the impact of worn profiles on running stability. For the simulation, the line layout and the track geometry deviations excite the model of track and vehicle. In a followup phase, the vector of generalized degrees of freedom is evaluated, and the results are displayed with a visualization program. The simulation results were compared with data recorded during a test run and showed satisfactory correspondence.
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Shull, L. C., and C. P. Wright. "VALID STRAIN MEASUREMENTS FOR STRUCTURAL DYNAMICS TESTING. Part 3: Design Rules for Spectral and Waveshape Reproduction." Experimental Techniques 25, no. 5 (September 2001): 35–37. http://dx.doi.org/10.1111/j.1747-1567.2001.tb00040.x.

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Zyphur, Michael J., Manuel C. Voelkle, Louis Tay, Paul D. Allison, Kristopher J. Preacher, Zhen Zhang, Ellen L. Hamaker, et al. "From Data to Causes II: Comparing Approaches to Panel Data Analysis." Organizational Research Methods 23, no. 4 (May 24, 2019): 688–716. http://dx.doi.org/10.1177/1094428119847280.

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This article compares a general cross-lagged model (GCLM) to other panel data methods based on their coherence with a causal logic and pragmatic concerns regarding modeled dynamics and hypothesis testing. We examine three “static” models that do not incorporate temporal dynamics: random- and fixed-effects models that estimate contemporaneous relationships; and latent curve models. We then describe “dynamic” models that incorporate temporal dynamics in the form of lagged effects: cross-lagged models estimated in a structural equation model (SEM) or multilevel model (MLM) framework; Arellano-Bond dynamic panel data methods; and autoregressive latent trajectory models. We describe the implications of overlooking temporal dynamics in static models and show how even popular cross-lagged models fail to control for stable factors over time. We also show that Arellano-Bond and autoregressive latent trajectory models have various shortcomings. By contrasting these approaches, we clarify the benefits and drawbacks of common methods for modeling panel data, including the GCLM approach we propose. We conclude with a discussion of issues regarding causal inference, including difficulties in separating different types of time-invariant and time-varying effects over time.
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Haneefa, M. K., S. Girish, R. V. Ranganath, and B. Saikia. "A Structural Dynamic Approach to Evaluate Modulus of Elasticity of Cantilever Beam." Applied Mechanics and Materials 852 (September 2016): 483–88. http://dx.doi.org/10.4028/www.scientific.net/amm.852.483.

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The modulus of elasticity is an important property of any structural member or machine component. It has a vital role in designing the structural components or machine components for their specific use. This paper discusses evaluation of modulus of elasticity of cantilever beams made out of Self-Compacting Concrete (SCC) using a structural dynamic approach – the free vibration test. The concept of free flexural vibration essentially involves setting up a specimen (beam) into ‘free vibration’ by imparting an initial condition, such that the specimen vibrates in its fundamental natural frequency. The digital data were stored using an efficient data acquisition system (Daisy lab version 5 software) and processed using Fast Fourier Transformation (FFT) (Acceleration v/s Time). The fundamental natural frequencies thus obtained were used to evaluate dynamic modulus of elasticity of SCC specimens using well established basic equations of structural dynamics. The study revealed that the dynamic modulus of elasticity for the cantilever beams were equal to the initial tangent modulus obtained by conventional compresso-meter method as per ASTM C 469-02. Moreover, the free vibration tests exhibited high consistency and repeatability. This technique can be of potential use as Non-Destructive Testing (NDT) for monitoring the health of in situ structures or machine components.
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Borkovic, Aleksandar, Dragan Milasinovic, Valentina Golubovic-Bugarski, Ognjen Mijatovic, and Manuel Desancic. "Experimental and numerical identification of structural modes for engineering education." Facta universitatis - series: Architecture and Civil Engineering 12, no. 2 (2014): 161–72. http://dx.doi.org/10.2298/fuace1402161b.

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Development of simple classroom demonstration device and software for visualization of structural normal modes is presented. Device is made of parts of old speaker, controlled with personal computer, where the harmonic motion of solenoid is used as an excitation for beam and plate models. Simple code for finite element free vibration analysis of plates is written in Wolfram Mathematica. Good agreement of results and attractive visual patterns of normal modes attracted attention of students. Results are confirmed using modern modal testing methods. Presented approach is complementary to standard teaching of structural dynamics.
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Zanuy, David, Francisco Rodríguez-Ropero, Ruth Nussinov, and Carlos Alemán. "Testing β-helix terminal coils stability by targeted substitutions with non-proteogenic amino acids: A molecular dynamics study." Journal of Structural Biology 160, no. 2 (November 2007): 177–89. http://dx.doi.org/10.1016/j.jsb.2007.07.014.

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Aznauryan, Mikayel, Leonildo Delgado, Andrea Soranno, Daniel Nettels, Jie-rong Huang, Alexander M. Labhardt, Stephan Grzesiek, and Benjamin Schuler. "Comprehensive structural and dynamical view of an unfolded protein from the combination of single-molecule FRET, NMR, and SAXS." Proceedings of the National Academy of Sciences 113, no. 37 (August 26, 2016): E5389—E5398. http://dx.doi.org/10.1073/pnas.1607193113.

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The properties of unfolded proteins are essential both for the mechanisms of protein folding and for the function of the large group of intrinsically disordered proteins. However, the detailed structural and dynamical characterization of these highly dynamic and conformationally heterogeneous ensembles has remained challenging. Here we combine and compare three of the leading techniques for the investigation of unfolded proteins, NMR spectroscopy (NMR), small-angle X-ray scattering (SAXS), and single-molecule Förster resonance energy transfer (FRET), with the goal of quantitatively testing their consistency and complementarity and for obtaining a comprehensive view of the unfolded-state ensemble. Using unfolded ubiquitin as a test case, we find that its average dimensions derived from FRET and from structural ensembles calculated using the program X-PLOR-NIH based on NMR and SAXS restraints agree remarkably well; even the shapes of the underlying intramolecular distance distributions are in good agreement, attesting to the reliability of the approaches. The NMR-based results provide a highly sensitive way of quantifying residual structure in the unfolded state. FRET-based nanosecond fluorescence correlation spectroscopy allows long-range distances and chain dynamics to be probed in a time range inaccessible by NMR. The combined techniques thus provide a way of optimally using the complementarity of the available methods for a quantitative structural and dynamical description of unfolded proteins both at the global and the local level.
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Jia, Junbo, and Jonas W. Ringsberg. "Numerical and Experimental Investigation of Dynamics of Vehicle/Ship-Deck Interactions." Marine Technology and SNAME News 45, no. 01 (January 1, 2008): 28–41. http://dx.doi.org/10.5957/mt1.2008.45.1.28.

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The paper presents numerical modeling and analysis of vehicle/ship-deck interactions and a review of similar models and approaches in the literature. The physical modeling of vehicles is discussed together with the modeling of supporting structures/ship decks, and the interactions between vehicles and supporting structures. Some engineering applications are studied, for example, the dynamic structural behavior of vehicle/ship-deck systems, vehicle vibrations, damping effects of vehicles on structural systems, dynamic interactions between tires and deck surfaces, and vehicle securing on decks during ship motions. In addition, results from modal testing of unloaded and vehicle-loaded lightweight deck systems in a ship and the tire-deck friction under dynamic loading are reported. The results are used for validation and verification of models. Finally, vehicle transportation using RO/RO ships and lashing-free vehicle concept ideas are studied and discussed.
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Aborehab, Ali, Mohamed Kamel, Ahmed Farid Nemnem, and Mohammed Kassem. "Finite element model updating of a satellite honeycomb sandwich plate in structural dynamics." International Journal of Space Structures 36, no. 2 (March 19, 2021): 105–16. http://dx.doi.org/10.1177/09560599211001683.

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The honeycomb sandwich structures have a crucial participation in aerospace industry, especially in the design of satellite structures due to their exceptional mechanical properties. The equivalent finite element modeling of such structures is initially presented through the implementation of modal analysis via the three-layered sandwich theory. Subsequently, the computational results are validated by carrying out an experimental modal testing. In addition, sensitivity analysis based upon design of experiments and parameters correlation, is executed for the sake of selecting the most appropriate design parameters for the optimization problem. Finally, finite element model updating of a honeycomb sandwich plate is thoroughly introduced using three optimization algorithms including genetic algorithms, adaptive-multiple optimization, and response surface method. A good agreement between the previously-mentioned optimization algorithms is obtained. Meanwhile, response surface method and its related design of experiments tool succeed in avoiding such time-consuming process and reduce the involved computational expense with an acceptable accuracy.
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Abu-zidan, Yousef, Priyan Mendis, Tharaka Gunawardena, Damith Mohotti, and S. Fernando. "Wind Design of Tall Buildings: The State of the Art." Electronic Journal of Structural Engineering 22, no. 01 (May 31, 2022): 53–71. http://dx.doi.org/10.56748/ejse.2233101.

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The construction of tall and slender buildings has seen recent growth in many cities around the world. Tall buildings are susceptible to dynamic excitation under wind effects which typically govern the structural design for strength, stability, and serviceability. This paper presents the state of the art in the analysis and design of tall buildings against wind effects. Structural design criteria are discussed in detail, with serviceability criteria relating to occupant comfort noted as being of particular importance. The latest in wind analysis tools and techniques is also presented. Wind tunnel testing remains the gold standard for determining wind loads on tall buildings, while the emerging use of computational fluid dynamics (CFD) is noted as being particularly useful for concept design stages. The paper aims to provide a valuable reference for engineers, architects, and designers involved in wind analysis and design of tall buildings.
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Shull, L. C., and C. R. Wright. "VALID STRAIN MEASUREMENTS FOR STRUCTURAL DYNAMICS TESTING. Part 2: Dynamic Strain Measurement System Transfer Functions and Linearity." Experimental Techniques 25, no. 4 (July 2001): 47–49. http://dx.doi.org/10.1111/j.1747-1567.2001.tb00033.x.

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Stoten, D. P., J. Y. Tu, and G. Li. "Synthesis and control of generalized dynamically substructured systems." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 223, no. 3 (December 18, 2008): 371–92. http://dx.doi.org/10.1243/09596518jsce635.

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The experimental technique for testing engineering systems via the method of dynamic substructuring is receiving significant global interest, for example in the fields of large-scale structural, aerospace, and automotive system testing. Dynamically substructured systems (DSSs) enable full-size, critical components of a complete system to be physically tested in real-time, within a laboratory environment, while the remainder of the system is modelled numerically. The intention is that the combined physical-numerical DSS behaves as if it were the complete (or emulated) system. In an ideal mechanical DSS, for example, perfect synchronization of displacements and forces at the interfaces between the numerical and physical components (or substructures) is required. Hence, a key design feature of successful DSS systems is the high fidelity of the control action. Equally, a DSS controller must be able to cope with non-linear, time-varying, and uncertain parameters within the physical substructure dynamics. The main purpose of this paper is to present a generalized DSS framework, together with associated linear and adaptive control strategies, that are specifically tailored to achieve high synchronization performance. The initial studies of this problem, as described in an earlier paper by Stoten and Hyde, are therefore continued by generalizing both the DSS dynamics and the control strategies to include (a) a number of newly defined modes of operation and (b) multivariable dynamics. In addition, comparative implementation and simulation studies are included, based upon the DSS testing of a mechanical system (a planar quasi-motorcycle rig), which was specifically designed to highlight the main features of this research. The comparative studies show that excellent DSS control can be achieved, especially with the addition of an adaptive component to the controller, despite significant changes to the physical substructure dynamics.
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Donders, Stijn, Laszlo Farkas, Michael Hack, Herman Van der Auweraer, Roberto d’Ippolito, David Moens, and Wim Desmet. "Assessment of Uncertainty for Structural and Mechatronics Engineering Applications." Applied Mechanics and Materials 104 (September 2011): 145–59. http://dx.doi.org/10.4028/www.scientific.net/amm.104.145.

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Nowadays, mechanical industries operate in a highly competitive environment, therefore the process of developing a component from concept through detailed Computer-Aided Engineering (CAE) and performance validation is optimized for reduced development time and increased product performance. To continuously improve the product design and performance and reduce the costs and time to market, the design and performance engineering is shifted more and more towards virtual modeling and simulation processes from the expensive test-based design evaluations. Secondly, the booming introduction of active and adaptive systems in mechanical structures leads to a ‘mechatronics systems’ revolution, which further improves the product performance at the expense of increased system complexity. It is noted that the potential of structural dynamics test and analysis methods for addressing a structural dynamics design assessment or design optimization depends largely on the confidence that one can have in the results. That is, the results must be accurate, characteristic for the actual problem (and not be the result of testing artifacts) and representative for the actual behavior of the investigated structure. In this context, a key aspect is to be aware of the key sources of uncertainty in the designed product, and the impact thereof on the product performance in terms of structural dynamics, crashworthiness and/or acoustics. This paper reviews the main elements of test data and modal modeling uncertainty and assesses the impact of the uncertainty on some typical modeling problems taken from automotive and aerospace industry.
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Zhang, Xu, Li Wei Li, Wei Wei Cui, Ji Jun Cui, Yang Cao, Hai Rong Zhao, Guo Quan Hao, Zhi Bing Feng, Song Yang Li, and De Fang He. "Research of Theoretical Analysis and Structural Design of Active Wheel." Applied Mechanics and Materials 121-126 (October 2011): 1446–49. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1446.

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Drive system of wheel motor is getting more and more attention by automobile manufacturers and researchers. In this paper, a novel drive system of electric vehicle with two degrees of freedom is given, with active wheel driven by two motors, which can work freely under three modes of single motor low speed, double motor high speed and regenerative braking. Furthermore, theoretical analysis based on mechanical dynamics is implemented for all these modes. Detailedly, on an experiment and design platform of a mini electric vehicle, comprehensively considering and balancing structure dimension of testing prototype and expected performance requirements, design of overall structure of the active wheel is accomplished.
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Shuaibu, Mukhtar, Shafiu Ibrahim Abdullahi, Muhammad Muazu Yusuf, and Mustapha Yusufu. "Economic Growth and Labour Market Dynamics in Nigeria: Further Evidence from ARDL Bound Testing." Sumerianz Journal of Economics and Finance, no. 41 (February 26, 2021): 35–40. http://dx.doi.org/10.47752/sjef.41.35.40.

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Recently the phenomenon of jobless growth has become common, defying the famous Okun law which predicted increase in job with increase in economic growth. Many factors have been advanced as explanations for this, most prominent of which are changes in the labour market and lopsidedness in economic growth. This paper is an attempt to measure labour market dynamics in Nigeria focusing on the relationship between economic growth and unemployment. The paper used data from 1991 to 2020 and employed GMM and ARDL models to analyze the data. Unlike the Okun law which prophesies negative relationship between unemployment and economic growth, the result from this analysis show that there is positive relationship between unemployment and economic growth, confirming the existence of the phenomenon of jobless growth in Nigeria. The paper recommended structural changes in the economy and the labour market.
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Dessena, Gabriele, Dmitry I. Ignatyev, James F. Whidborne, Alessandro Pontillo, and Luca Zanotti Fragonara. "Ground Vibration Testing of a Flexible Wing: A Benchmark and Case Study." Aerospace 9, no. 8 (August 10, 2022): 438. http://dx.doi.org/10.3390/aerospace9080438.

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Beam-like flexible structures are of interest in many fields of engineering, particularly aeronautics, where wings are frequently modelled and represented as such. Experimental modal analysis is commonly used to characterise the wing’s dynamical response. However, unlike other flexible structure applications, no benchmark problems involving high-aspect-ratio flexible wings have appeared in the open literature. To address this, this paper reports on ground vibration testing results for a flexible wing and its sub-assembly and parts. The experimental data can be used as a benchmark and are available to the aeronautical and structural dynamics community. Furthermore, non-linearities in the structure, where present, were detected. Tests were performed on the whole wing as well as parts and sub-assembly, providing four specimens. These were excited with random vibration at three different amplitudes from a shaker table. The modal properties of a very flexible high-aspect-ratio wing model, its sub-assembly and parts, were extracted, non-linear behaviour was detected and the experimental data are shared in an open repository.
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44

Chu, Jiangtao, and Yue Yang. "Linking Structural Equation Modelling with Bayesian Network and Coastal Phytoplankton Dynamics in Bohai Bay." E3S Web of Conferences 38 (2018): 01028. http://dx.doi.org/10.1051/e3sconf/20183801028.

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Bayesian networks (BN) have many advantages over other methods in ecological modelling and have become an increasingly popular modelling tool. However, BN are flawed in regard to building models based on inadequate existing knowledge. To overcome this limitation, we propose a new method that links BN with structural equation modelling (SEM). In this method, SEM is used to improve the model structure for BN. This method was used to simulate coastal phytoplankton dynamics in Bohai Bay. We demonstrate that this hybrid approach minimizes the need for expert elicitation, generates more reasonable structures for BN models and increases the BN model’s accuracy and reliability. These results suggest that the inclusion of SEM for testing and verifying the theoretical structure during the initial construction stage improves the effectiveness of BN models, especially for complex eco-environment systems. The results also demonstrate that in Bohai Bay, while phytoplankton biomass has the greatest influence on phytoplankton dynamics, the impact of nutrients on phytoplankton dynamics is larger than the influence of the physical environment in summer. Furthermore, despite the Redfield ratio indicating that phosphorus should be the primary nutrient limiting factor, our results indicate that silicate plays the most important role in regulating phytoplankton dynamics in Bohai Bay.
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Parker, Samuel D., Michael R. Haberman, and Daniel R. Roettgen. "Time-varying elastic wave mode conversion in vibrating elastic beams with subwavelength nonlinearity." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A294. http://dx.doi.org/10.1121/10.0016326.

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Introduction of time-varying properties in a background medium can enable unconventional wave behavior. Furthermore, it is well-known that subjecting nonlinear materials to time-varying stress can be used for material characterization [Appl. Phys. Lett. 94, 011905 (2009)]. We propose a technique called Dynamic Asymmetric Transmission Measurement (DATM) that combines structural dynamic (SD) and ultrasonic (US) testing modalities in an elastic waveguide to detect and characterize changes in the global stress state of a structure that result in local time-varying stress conditions due to local nonlinearity. Asymmetric geometric features in beams and plates, paired with time-varying stress conditions, result in asymmetric mode conversion of guided US waves that depend on large-scale structural dynamics. The DATM technique is explored through finite element modeling, semi-analytical methods, and experiments and discussed in a structural health monitoring context. We also discuss the use of dynamic structures with engineered defects to introduce time-varying stress conditions for the purpose of manipulating elastic waves. [Sandia National Laboratories is a multimission laboratory managed and operated by the National Technology & Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.]
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46

Kashyn, I. A., G. I. Nikolaev, M. A. Tuzikov, and A. M. Andrianov. "Molecular dynamics for structural complexes of potential HIV-1 inhibitors with the viral envelope gp120 protein." Doklady of the National Academy of Sciences of Belarus 62, no. 5 (October 30, 2018): 576–84. http://dx.doi.org/10.29235/1561-8323-2018-62-5-576-584.

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Molecular dynamics simulations for the structural complexes of potential HIV-1 inhibitors with the viral envelope gp120 protein were carried out. Free energies of the formation of these supramolecular structures and contributions of individual amino-acid residues of gp120 to the enthalpy binding were calculated. The residues of gp120 critical for interactions with the ligands were identified. Based on the data obtained, five compounds promising for synthesis and testing for antiviral activity were selected. It is suggested that these compounds may be successfully used in the design of novel, potent and broad anti-HIV drugs.
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47

Ghali, G. S. "Multi-dimensional analysis of soil moisture dynamics in trickle irrigated fields. II: Model testing." Water Resources Management 3, no. 1 (1989): 35–47. http://dx.doi.org/10.1007/bf00872335.

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48

Xiao, Amy, Fuqing Wu, Mary Bushman, Jianbo Zhang, Maxim Imakaev, Peter R. Chai, Claire Duvallet, et al. "Metrics to relate COVID-19 wastewater data to clinical testing dynamics." Water Research 212 (April 2022): 118070. http://dx.doi.org/10.1016/j.watres.2022.118070.

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49

Swamy, Vighneswara. "Testing the interrelatedness of banking stability measures." Journal of Financial Economic Policy 6, no. 1 (April 1, 2014): 25–45. http://dx.doi.org/10.1108/jfep-01-2013-0002.

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Purpose – This study aims to investigate the inter-relatedness and the dynamics of banking stability measures and offers answers for some of the related issues such as does financial stability require the soundness of banking institutions, the stability of markets, the absence of turbulence and low volatility? and to what extent the soundness of banking sector in the case of emerging economies can help financial system stability. Design/methodology/approach – This study investigates banking stability by structuring a recursive micro panel vector auto regressive (VAR) model and corroborates the significance of the interrelatedness of the bank-specific variables such as liquidity, asset quality, capital adequacy and profitability by employing a robust panel data drawn from 56 leading banks for a period of 12 years. Findings – A significant contribution of this study is in establishing that liquidity in the banking-dominated financial system is reciprocally related with asset quality, capital adequacy, and profitability of the banking system and in effectively forecasting banking stability employing micro panel recursive VAR model. Research limitations/implications – The study could be further broadened by employing a macro and structural VAR modelling to forecast banking stability. Practical implications – This paper is one among the evolving body of literature that underscores the significant relationship between banking system resilience and financial stability in the context of emerging economies dominated with banking systems. Further, the forecast model is able to capture the dynamics of banking stability with greater and appreciable accuracy. Originality/value – The uniqueness of the study is in modelling banking stability measures in the context of banking-dominated emerging economy financial systems by employing micro panel recursive VAR model by deriving data from 58 leading banks for the period of 12 years from 1996 to 2009 and in offering insights in understanding financial stability with comprehensive literature review.
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Gunadi, Widyo, Manuntun Parulian Hutagaol, and Muliaman D. Hadad. "RANCANGAN KEBIJAKAN BUDAYA ORGANISASI UNTUK PENINGKATAN KAPABILITAS BANK SENTRAL." JURNAL EKONOMI DAN KEBIJAKAN PEMBANGUNAN 1, no. 1 (February 4, 2018): 1–12. http://dx.doi.org/10.29244/jekp.1.1.2012.1-12.

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The aim of this study is to develop policies of organization culture (OC). The policies analysis cover management process and its changing in Bank Indonesia, including direction and substance of OC, developing ideal models, methods, dynamic change and its management. Awareness about the importance of OC in improving the performance of the organization had been recognized by management of Bank Indonesia in the surface, but when examined the dynamics of the changes, the implementation seem fluctuated. Using a system approach, this research employ three main tools: Analytical Network Process (ANP), Strategic Assumption Surfacing and Testing (SAST), and Interpretative Structural Modeling (ISM). The knowledge base data are compiled using combination of several methods: survey, focus group discussion (FGD), statistics of secondary data, and structured in depth interviews. This research has found the new values which should be adopted for BI are integrity professional, visionary, competence, and transparent. Besides, it also delevelop models to implement a new organization culture management. In terms of organization culture change program, this research uncovers several important phenomena such as: the central role of the board of governor, the function of performance management and assessment, and the role of director in every unit.Keywords : organization Culture, Values,Sub-culture Type, Analytical Network Process, Strategic Assumption Surfacing and Testing, Interpretative Structural Modeling
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