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Journal articles on the topic 'Static rigidity'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Hou, Ya Li, and Wei Ping Mao. "Analysis of Static and Dynamic Stiffness for Coupled Double-Rotor Spindle System of High Speed Grinder." Key Engineering Materials 522 (August 2012): 278–82. http://dx.doi.org/10.4028/www.scientific.net/kem.522.278.

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This study was focused on the theoretical modeling and numerical investigation about the dynamic and static stiffness of coupled double-rotor spindle system of high speed grinder. The moment balance and the transition matrix, the state vector, field matrix of spindle system of high speed grinder were analyzed and deduced. The theoretical models about dynamic and static stiffness were established using the transfer matrix method. The numerical results showed that increased rigidity of front bearing significantly increased static and dynamic rigidity of spindle end and the rigidity of front bear

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2

Liu, Shi Hao, Wen Hua Ye, Wei Fang Chen, and Ting Zhang. "Simulation and Experiment Study for Spindle of Numerical Control Machine Tool." Applied Mechanics and Materials 16-19 (October 2009): 1289–93. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.1289.

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Processing precision of numerical control machine tool is decided by static rigidity and dynamic rigidity of spindle to a great extent. 3- D model of numerical control machine tool was established by using parametric modeling and virtual assembly function of Solidworks. Simultaneously, simulation and Experiment study of the spindle static rigidity was carried out, and practicability of the simulation analysis method was proved. The result indicates that the biggest deformation appears in the front of spindle. The static rigidity of spindle can been enhanced greatly by enhancing three carriage-

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3

Hu, Jin, and Gen Bao Zhang. "Experiments and Study of the Static Rigidity of Workpiece Spindle of Direct-Drive Gear Hobbing Machine." Applied Mechanics and Materials 233 (November 2012): 355–60. http://dx.doi.org/10.4028/www.scientific.net/amm.233.355.

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Static rigidity of workpeice spindle component is a very important index of the rigidity of derict-drive gear hobbing spindle unit. In this study, the static rigidity of workpiece spindle system were analyzed through a finite element method (EFM) by building geometric models and studying the deformation when radial cutting force was imposed. Experiments on workpiece were carried out with and without the assistance of tailstock center separately to measure the changes of the static rigidity of spindle. The results prove a less change of the static rigidity of spindle when with the assistance of

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4

Huang, Guangyue, Qi Guo, and Bingqing Ma. "Rigidity of closed vacuum static spaces." Differential Geometry and its Applications 98 (February 2025): 102217. https://doi.org/10.1016/j.difgeo.2024.102217.

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5

Dyakonov, A. A., A. Kh Nurkenov, I. V. Shmidt, A. S. Degtyareva, A. S. Ovsienko, and A. D. Kazanskii. "Static rigidity of numerically controlled lathes." Russian Engineering Research 37, no. 7 (2017): 622–25. http://dx.doi.org/10.3103/s1068798x17070103.

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6

Huang, Guangyue, and Botao Wang. "Rigidity results for closed vacuum static spaces." AIMS Mathematics 8, no. 12 (2023): 28728–37. http://dx.doi.org/10.3934/math.20231470.

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<abstract><p>In this paper we studied rigidity results for closed vacuum static spaces. By using the maximum principle, we achieved rigidity theorems under some pointwise inequalities and showed that the squared norm of the Ricci curvature tensor was discrete.</p></abstract>

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7

Connelly, Robert, and Walter Whiteley. "The Stability of Tensegrity Frameworks." International Journal of Space Structures 7, no. 2 (1992): 153–63. http://dx.doi.org/10.1177/026635119200700208.

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For a tensegrity framework with bars, cables (unilateral tension members) and struts (unilateral compression members), this paper presents a sequence of four mathematical concepts for detecting its rigidity. In order from the strongest to the weakest, these concepts are called infinitesimal (or static) rigidity, prestress stability, second-order rigidity and rigidity. Emphasis is placed on pre-stress stability, which lies between infinitesimal rigidity and second-order rigidity.

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8

Bao, Limin, Masayuki Takatera, and Akira Shinohara. "Dynamic and Static Flexural Rigidity of Fabric." Sen'i Gakkaishi 49, no. 12 (1993): 642–47. http://dx.doi.org/10.2115/fiber.49.12_642.

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9

Galloway, Gregory J., and Pengzi Miao. "Variational and rigidity properties of static potentials." Communications in Analysis and Geometry 25, no. 1 (2017): 163–83. http://dx.doi.org/10.4310/cag.2017.v25.n1.a5.

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10

Wang, Kai, Chang-guang Zhou, and Yi Ou. "Investigation of the fluctuation of the static axial rigidity for double-nut preloaded ball screws." Advances in Mechanical Engineering 11, no. 1 (2019): 168781401882218. http://dx.doi.org/10.1177/1687814018822181.

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This article aims to investigate the fluctuation of the static rigidity for preloaded ball screws. Based on the correlation between preload and friction torque, a new model to calculate the contact rigidity by friction torque is proposed. Meanwhile, a novel test bench is constructed to measure the static stiffness at different positions. The experimental results agree well with the theoretical values, which proves the validity of the model. Furthermore, it is found that the screw shaft rigidity has the greatest influence on the system stiffness fluctuation, compared to the bearing rigidity, an

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11

Zhou, Hong Xia, and Bin Liu. "Characteristics Analysis and Optimization of Flying-Wing Vehicle Structure." Advanced Materials Research 1077 (December 2014): 177–84. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.177.

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To study structural characteristics of flying-wing vehicle, static and dynamic model of half wing span, static and dynamic model of all wing span, optimization model were established. Based on associated static test and ground resonance test data, these models were modified to implement static, dynamic and optimization analysis. Results demonstrated that structural bending and torsional deformations are mainly at outer wing surface. Torsion at inner wing is positive, while torsion at outer wing is negative. Total spar axial force along the wing span increases gradually from inner wing to outer

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12

Yun, Gabjin, and Seungsu Hwang. "Rigidity of generalized Bach-flat vacuum static spaces." Journal of Geometry and Physics 121 (November 2017): 195–205. http://dx.doi.org/10.1016/j.geomphys.2017.07.016.

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13

Qing, Jie, and Wei Yuan. "On scalar curvature rigidity of vacuum static spaces." Mathematische Annalen 365, no. 3-4 (2015): 1257–77. http://dx.doi.org/10.1007/s00208-015-1302-0.

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14

Guan, Shanlin. "A rigidity theorem on closed vacuum static spaces." Journal of Mathematical Analysis and Applications 554, no. 1 (2026): 129909. https://doi.org/10.1016/j.jmaa.2025.129909.

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15

Amir, Muhammad. "Sustainable solution of sewing thread attributes on seam pucker." Mehran University Research Journal of Engineering and Technology 42, no. 3 (2023): 25. http://dx.doi.org/10.22581/muet1982.2303.03.

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Bending rigidity magnitude of sewing thread provides a sustainable solution on the appearance of single needle lock stitched lightweight woven fabrics which are prone to pucker. Comparison of sewing thread bending rigidity with thread count, thread diameter, thread cyclic recovery and their resultant implication in the single lock stitched assemblies were given less consideration for the prediction and reduction of seam pucker severity. The resultant implication of physical and mechanical properties of sewing thread with rising trend of static thread tension magnitude at lock stitched sewing m

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16

Ghiţescu, Marilena, Marius Ghiţescu, and Arina Modrea. "Some Aspects about Theoretical Static Rigidity and Experimental Static Rigidity of a New Elastic Coupling with Cylindical Bolts and Nonmetallic Elements." Acta Marisiensis. Seria Technologica 16, no. 2 (2019): 11–19. http://dx.doi.org/10.2478/amset-2019-0011.

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Abstract The elastic couplings are frequently used in mechanical transmissions design, to take over the radial, axial and angular misalignments and also to take over the shocks and the overloads that could appear. In this paper is presenting some aspects about the construction of couplings with bolts using non-metallic elements, e.g. rubber, having different hardness, the elements involved in torque transmission, in this case elastic elements, having also different dimensions or forms, in the way to have a good elasticity and capacity of vibration absorbtion, determining theoretical static rig

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17

Zhong, Zhen Yu. "Static Wind Load and Gravity Coupling Effect of Tall Structure." Applied Mechanics and Materials 94-96 (September 2011): 1556–59. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.1556.

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The cantilever beam model of tall building structure which includes lateral wind load and vertical gravity coupling has been established in the paper. The form of finite difference has been concluded from equations of the model acted on static wind load. Amplified coefficients of bottom moment and top displacement are calculated and analyzed. The result shows that gravity second order effect of tall buildings will be enhanced when ratio of gravity rigidity or ratio of bending and shearing rigidity increase.

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18

Evans, EA, and N. Mohandas. "Membrane-associated sickle hemoglobin: a major determinant of sickle erythrocyte rigidity." Blood 70, no. 5 (1987): 1443–49. http://dx.doi.org/10.1182/blood.v70.5.1443.1443.

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Abstract Micropipette aspiration tests on single erythrocytes have previously shown that the static rigidity (membrane shear modulus) of oxygenated sickle cells increased with increasing hemoglobin concentration, whereas the rigidity of normal cells was independent of hemoglobin concentration. Moreover, it was observed that after mechanical extension, sickle cells exhibited persistent deformation more frequently and to a greater extent than normal cells. To ascertain if differences in association of normal and sickle hemoglobin with the membrane could account for these observations, we measure

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Evans, EA, and N. Mohandas. "Membrane-associated sickle hemoglobin: a major determinant of sickle erythrocyte rigidity." Blood 70, no. 5 (1987): 1443–49. http://dx.doi.org/10.1182/blood.v70.5.1443.bloodjournal7051443.

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Micropipette aspiration tests on single erythrocytes have previously shown that the static rigidity (membrane shear modulus) of oxygenated sickle cells increased with increasing hemoglobin concentration, whereas the rigidity of normal cells was independent of hemoglobin concentration. Moreover, it was observed that after mechanical extension, sickle cells exhibited persistent deformation more frequently and to a greater extent than normal cells. To ascertain if differences in association of normal and sickle hemoglobin with the membrane could account for these observations, we measured rheolog

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20

Lin, Wei Shin, and Chiu Fan Hsieh. "The Static Rigidity Analysis of the Position Adjustable Computer Table." Materials Science Forum 626-627 (August 2009): 807–12. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.807.

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This study is pointed to a computer table with five degree of freedom. The table position could be adjusted freely. The height of the tabletop also could be moved freely. The finite element analysis software ANSYS was used to analysis the strength and rigidity of the computer table. From the analysis results, it can be found that the strength and rigidity were fit in with the specification requirement with a safety factor of 1.20. From the modal analysis results, it also found that the stability of the computer was confirmed to the users.

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21

Spandana, Kurelly, Y. Kamala Raju, G. V. V. Satyanarayana, and Atulkumar Manchalwar. "Effect of joint rigidity on structural behavior of RC buildings." E3S Web of Conferences 309 (2021): 01204. http://dx.doi.org/10.1051/e3sconf/202130901204.

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Non-linear static analysis or pushover analysis is now-a –days generally preferred by many researchers to analyse the non-linear behaviour of the structure. Present study includes the effect of joint rigidity on the behaviour of the structure. A building is modeled with 5 and 10 story and designed for gravity and earthquake resistant loads by considering joint rigidity factor as 0 and 1. The analysis is done in both X and Y directions by using pushover analysis in SAP2000 software. Comparison is made between then capacity curves obtained from designed models of rigidity and non-rigidity models

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22

Yang, Ying, Yu Sheng Li, and Fan Liang Meng. "Numerical Design and Analysis of a Certain White Bodywork." Applied Mechanics and Materials 16-19 (October 2009): 110–14. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.110.

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Develops a finite element model to analyze the dynamic/static sensitivities of a certain white bodywork, i.e., the sensitivities of its bodywork’s natural frequency, torsional stiffness and flexural rigidity and mass to the thickness of sheet to make the bodywork, thus finding out the main parts affecting greatly the dynamic and static characteristics of bodywork to optimize its structure design. According to the sizes of contribution the body mass will make to the natural frequency and torsional stiffness and flexural rigidity, an optimal conceptual design is given. This method provides an im

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23

Gao, Chang Yin, and Wan Quan Li. "Design of the Novel Calibration Platform for Piezoelectric Dynamometers." Advanced Materials Research 580 (October 2012): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.580.3.

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In order to accomplish the static calibration of piezoelectric dynamometer, the principle and structure of a multifunctional high-precision, high rigidity static calibration platform is manufactured in this paper. The screw loading mechanisms are used to achieve vertical force and horizontal forces, and its value can directly obtained by the standard measuring ring. The torque load adopts “force × lever arm" law, that is, the two horizontal loading mechanisms are relatively shifted to form force arm, and at the same time two parallel forces that have the same magnitude and opposite directions

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24

Song, Xi, Yin Guang Wu, Jie Yu Li, and Rong Zhen Zhao. "Vibration Characteristics Analysis of Wind Turbine Towers under Foundation Conditions." Applied Mechanics and Materials 446-447 (November 2013): 721–27. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.721.

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Based on a kind of 1.5MW large-scale horizontal axis wind turbine tower, the mechanical modeling of a wind turbine tower-foundation is established, the static and dynamic analysis of the model is carried out by ANSYS software. The top displacement of the system is calculated by the static analysis to meet the design requirements in engineering. In dynamic analysis, each pile foundation is equivalent to a group of springs for the simulation of horizontal and vertical rigidity of the pile. The influence of top mass and foundation elasticity on wind turbine tower modes is analyzed, and calculated

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25

Xu, Xiang, Wei Wang, and Ping Ping Fan. "Finite Element Analysis of a Wind-Solar Hybrid Powered Street Light." Applied Mechanics and Materials 365-366 (August 2013): 201–5. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.201.

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A finite elementmodel of a 9-meter-high wind-solar hybrid powered street light was established;statics analysis, modal analysis and harmonic response analysis were performedusing ANSYS. Static analysis determined the maximum deformation and stress of astreet light under complex load, and checked its intensity and rigidity. Modalanalysis and harmonic response analysis obtained a vibration mode of a streetlight and its natural frequency of every order. The results of analysesprovided references for the optimization of street light structure.

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26

Li, Da Ying, and Gui Yun Jiang. "Study on the Oil Film Static Performance of Sliding Bearings with Different Throttling Methods." Applied Mechanics and Materials 155-156 (February 2012): 519–25. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.519.

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The restrictors of fluid lubricated sliding bearings play vital role in oil film rigidity and carrying capacity of bearings. The mathematical models for solution of the oil film static performance of the bearings with four different restrictors were presented and the numerical solution methods were analyzed. The solutions for oil film static characteristics in many aspects such as discretization of Reynolds equation, building clearance function, determinating boundary conditions, constructing continuity equation, deducing the models of oil inlet flow, solving the carrying capacity were conduct

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27

Halim, A. O. Abd El, D. T. Lau, A. G. Razaqpur, and J. A. Winterink. "Utilization of the relative rigidity concept to predict the failure of pipe systems under explosive loads." Canadian Journal of Civil Engineering 23, no. 1 (1996): 107–16. http://dx.doi.org/10.1139/l96-011.

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The interaction between loading plates and supporting structures is very much dependent upon the relative rigidity of the system. This paper first illustrates how an indiscriminate application of the relative rigidity concept can lead to erroneous conclusions in such systems. The paper then applies the concept to explain reported observed failure modes in pipe systems under explosive loads. Numerical studies are presented which simulate the behaviour of square pipe systems under static and explosive loads using the concept of relative rigidity in conjunction with the finite element method. The

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28

Jiang, Gui Yun, Yong Qin Wang, and Xin Chun Yan. "Study on Throttle Methods for Hydrostatic Bearing." Applied Mechanics and Materials 373-375 (August 2013): 2119–23. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.2119.

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In hydrostatic bearing, the applied load is carried through the compensatory effect of restrictors. Different throttle methods will bring different oil film rigidity and carrying capacity. There are mainly four types restrictors such as capillary,orifice,slide valve and film feedback restrictors. The mathematical models of carrying capacity and oil film rigidity of the hydrostatic bearings throttled by the restrictors mentioned above were presented. The oil film rigidity of hydrostatic bearings throttled by different restrictors were analyzed. Reynolds equation was provided and the numerical s

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29

Fu, Yao, Vera Bocharova, Mengze Ma, Alexei P. Sokolov, Bobby G. Sumpter, and Rajeev Kumar. "Effects of counterion size and backbone rigidity on the dynamics of ionic polymer melts and glasses." Phys. Chem. Chem. Phys. 19, no. 40 (2017): 27442–51. http://dx.doi.org/10.1039/c7cp04249c.

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Backbone rigidity, counterion size and the static dielectric constant affect the glass transition temperature, segmental relaxation time and decoupling between counterion and segmental dynamics in significant manners.

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30

Cheng, Peng, Carla Davila, and Gene Hou. "Static, Vibration Analysis and Sensitivity Analysis of Stepped Beams Using Singularity Functions." Journal of Structures 2014 (January 20, 2014): 1–13. http://dx.doi.org/10.1155/2014/234085.

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A systematic approach is presented in this paper to derive the analytical deflection function of a stepped beam using singularity functions. The discontinuities considered in this development are associated with the jumps in the flexural rigidity and the applied loads. This approach is applied to static and vibration analyses of stepped beams. The same approach is later extended to perform sensitivity analysis of stepped beams. This is done by directly differentiating the analytical deflection function with respect to any beam-related design variable. The particular design variable considered

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31

Gavrilov, M. A., A. A. Martynov, and A. V. Filatov. "Strength and Rigidity of Modified Epoxy Composites Under Static Loading." IOP Conference Series: Materials Science and Engineering 1079, no. 6 (2021): 062016. http://dx.doi.org/10.1088/1757-899x/1079/6/062016.

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32

Enosh, Guy, Zvi Eisikovits, and Chen Gross. "Between Rigidity and Chaos." American Journal of Men's Health 7, no. 5 (2013): 427–38. http://dx.doi.org/10.1177/1557988313480807.

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The goal of this article was to examine the worldviews of cohabiting or married men and women who experienced domestic violence in their relationships. The study was based on content analysis of in-depth interviews with 48 men and women (24 couples), who were living together after experiencing at least one violent event in their relationships over the previous 12 months. Using constructivist grounded theory, the authors examined the deep structure of the ways by which partners living with intimate partner violence constructed their world. The men and women under study constructed heuristic mod

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33

Latifi, Ahmet, Arsim Abazi, and Astrit Shartari. "The amortization of vibrations on machines - case study." International Journal of Engineering & Technology 6, no. 3 (2017): 54. http://dx.doi.org/10.14419/ijet.v6i3.7657.

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When determining the static rigidity of the machine, only loads of constant forces are taken into account. However, machine details are not loaded only with static forces but also with external and internal dynamic forces. Components of static forces affect the form errors, while dynamic instability, and as a result of dynamic forces have negative impact on: the severity of processed surface, the wear of the metal cut-ting tool, wear of the machine details and productivity.

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34

Nixon, Anthony, Bernd Schulze, and Walter Whiteley. "Rigidity through a Projective Lens." Applied Sciences 11, no. 24 (2021): 11946. http://dx.doi.org/10.3390/app112411946.

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In this paper, we offer an overview of a number of results on the static rigidity and infinitesimal rigidity of discrete structures which are embedded in projective geometric reasoning, representations, and transformations. Part I considers the fundamental case of a bar–joint framework in projective d-space and places particular emphasis on the projective invariance of infinitesimal rigidity, coning between dimensions, transfer to the spherical metric, slide joints and pure conditions for singular configurations. Part II extends the results, tools and concepts from Part I to additional types o

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35

Zhang, Xie Dong, Jin Zhi Wang, and Jun Feng Guo. "Inspection and Evaluation of Load-Bearing Capacity of Single Tower Composite Girder Cable-Stayed Bridge." Advanced Materials Research 538-541 (June 2012): 1785–88. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1785.

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In order to evaluate single tower composite girder Cable Bridge actual bearing capacity and working property on design using load, a single-tower composite girder cable-stayed bridge is taken as an example, by means of static load test, dynamic load test, reasonably measures evaluates the single tower composite girder cable-stayed bridge's bearing capacity. The static load test measure static properties of bridge structure (static strain, static deflection, etc.), dynamic load test, measure the dynamic properties of bridge structure (vibration frequency, damping, forced vibration amplitude, im

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36

Song, Lihua, and Junyuan Kang. "Study on bearsing capacity and rigidity of surface throttling bearing." Journal of Physics: Conference Series 2853, no. 1 (2024): 012041. http://dx.doi.org/10.1088/1742-6596/2853/1/012041.

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Abstract Based on the lubrication principle and Reynolds theory, the influence of the pressure field and structural parameters on the bearing characteristics of the surface throttle bearing is analyzed and studied by using the finite difference method. The results show that the surface throttling bearing has obvious static bearing characteristics when the shaft is not rotating; The dynamic pressure effect of oil wedge load can be seen obviously when the shaft rotates. With the increase of radius gap h0, the bearing capacity and rigidity will decrease significantly. The increase of oil supply p

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37

Tajima, Shingo, Satoshi Iwamoto, and Hayato Yoshioka. "Posture Optimization in Robot Machining with Kinematic Redundancy for High-Precision Positioning." International Journal of Automation Technology 17, no. 5 (2023): 494–503. http://dx.doi.org/10.20965/ijat.2023.p0494.

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Vertically articulated industrial robots are suitable for machining purposes owing to their advantages over multi-axis machine tools, such as larger workspace, easier installation, and lower cost. However, the rigidity and positioning accuracy of industrial robots are inferior to those of machine tools, which renders it difficult to maintain the robot posture required for machining operations. This study focuses on improving the accuracy of robot machining based on posture optimization by exploiting the kinematic redundancy of a six-axis vertically articulated robot. To decrease positioning er

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38

Lin, Lepeng, Yahui Qiao, Hongjun Li, and Chao Zhou. "Comparative study on static and dynamic characteristics of pumping-out and pumping-in herringbone grooved journal bearings." Advances in Mechanical Engineering 15, no. 5 (2023): 168781322311757. http://dx.doi.org/10.1177/16878132231175753.

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The aim of this paper is to compare the static and dynamic performances of two types of herringbone grooved journal bearings (HGJBs), that is, pumping-out HGJB and pumping-in HGJB. Firstly, based on finite control volume method and the principle of flow balance, an equivalent Reynolds equation considering the turbulence effect is derived. Then, the journal motion considering angular displacement is analyzed with linear perturbation method. The equivalent Reynolds equation is linearized into static-form one and perturbed-form ones. These equations are solved by finite difference method and thei

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39

Zheng, Jian Xin. "Research on Mechanism of Ultrasonic Assisted Creep Feed Grinding Ceramic Blade Surface." Applied Mechanics and Materials 42 (November 2010): 166–69. http://dx.doi.org/10.4028/www.scientific.net/amm.42.166.

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Technology of NC-contour evolution ultrasonic assisted creep feed grinding (NC-CEUACFG) blade surface was put forward to solve the difficult problem of machining ceramic blade surface. The static load on the grinding wheel and the influence of the rigidity of the grinding wheel on the surface precision were studied combined with the movement analysis between the blade and grinding wheel in the process of NC-CEUACFG ceramic blade surface, and the physical model of static load may explain the decrease of grinding force and increase of the relative rigidity of the grinding wheel in NC-CEUACFG in

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40

Diligensky, D. S., D. K. Novikov, and K. V. Boyarov. "Determining static stiffness of damper elastic rings." VESTNIK of Samara University. Aerospace and Mechanical Engineering 20, no. 4 (2022): 69–78. http://dx.doi.org/10.18287/2541-7533-2021-20-4-69-78.

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The article describes a method for experimental evaluation of the stiffness of an elastic damper ring. A thin-walled low-stiffness ring with uniformly distributed smooth protrusions on the inner and outer surfaces acts as a damper ring. Despite the widespread use of such a design in domestic and foreign mechanical engineering, control of the characteristics of this element and, accordingly, of the support as a whole remains quite difficult. A numerical model was developed, the reliability of which is confirmed by analytical calculations. To check the data obtained by numerical calculations, a

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41

Chen, Xudong, Yunlin Liu, Qinyong Ma, Deyi Wu, and Guodong Shi. "Study on the Method for Calculating the Flexural Rigidity of Reinforced Concrete Truss Hollow Composite Slabs." Buildings 15, no. 4 (2025): 586. https://doi.org/10.3390/buildings15040586.

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A static performance experimental study was conducted on six simply supported reinforced concrete truss hollow composite slabs to analyze their flexural rigidity. The study investigated the effects of the slab thickness, the dimensions of the hollow thin-walled boxes, and the composite interfaces on the flexural rigidity of the hollow composite slabs. The flexural rigidity was calculated using methods from American standards, Chinese standards, and the relevant literature, and the results were compared with the experimental data. Based on the experimental findings, a method for calculating the

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42

Arata, Koichi, and Michito Nakanishi. "Validity of the Cutting and Holding Tool Selection by Static Rigidity." Proceedings of The Manufacturing & Machine Tool Conference 2004.5 (2004): 249–50. http://dx.doi.org/10.1299/jsmemmt.2004.5.249.

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43

Braaten, Eric, and Cosmas K. Zachos. "Instability of the static solution to the closed string with rigidity." Physical Review D 35, no. 4 (1987): 1512–14. http://dx.doi.org/10.1103/physrevd.35.1512.

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44

Chitariu, Dragoş-Florin. "Experimental research regarding static rigidity in transversal direction of “normal“ module." MATEC Web of Conferences 112 (2017): 07024. http://dx.doi.org/10.1051/matecconf/201711207024.

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45

Bolmatov, D., V. V. Brazhkin, and K. Trachenko. "Helium at elevated pressures: Quantum liquid with non-static shear rigidity." Journal of Applied Physics 113, no. 10 (2013): 103514. http://dx.doi.org/10.1063/1.4795340.

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Медведев, Дмитрий, Dmitriy Medvedev, Виктор Хандожко, and Viktor Khandozhko. "Automated technological providing of contact rigidity of polished surfaces of machine parts and their joints." Bulletin of Bryansk state technical university 2015, no. 2 (2015): 40–49. http://dx.doi.org/10.12737/22867.

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Development and experimental check of the algorithm and the program for automated technological providing of normal static contact rigidity of polished surfaces of machine parts and their joints at a stage of design-technology preparation of manufacture was considered.

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Chan, Tzu-Chi, Chia-Chuan Chang, Aman Ullah, and Han-Huei Lin. "Study on Kinematic Structure Performance and Machining Characteristics of 3-Axis Machining Center." Applied Sciences 13, no. 8 (2023): 4742. http://dx.doi.org/10.3390/app13084742.

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The rigidity and natural frequency of machine tools considerably influence cutting and generate great forces when the tool is in contact with the workpiece. The poor static rigidity of these Vertical Machining Centre machines can cause deformations and destroy the workpiece. If the natural frequency of the machines is low or close to the commonly used cutting frequency, they vibrate considerably, resulting in poor workpiece surfaces and thus shortening the lifespan of the tool. The main objective of this study was to develop an experimental technique for measuring the effect of machine tool st

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Ganis, Giorgio, Clara Casco, and Sergio Roncato. "Perceived Rigidity and Nonrigidity in the Kinetic Depth Effect." Perception 22, no. 1 (1993): 23–34. http://dx.doi.org/10.1068/p220023.

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Stroboscopic simulations of three-dimensional rotating rigid structures can be perceived as highly nonrigid. To investigate this nonrigidity effect a sequence of either three (experiment 2 and 3) or thirty six frames (experiment 4) was used, each consisting of a set of dots with location on the horizontal axis corresponding to the parallel projection of a nominally defined helix. Observers were asked to judge the angle of rotation of eighty helices defined by the factorial combination of eight phase (φ) values (ie difference between the sinusoidal path of one dot and its neighbours) and ten di

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Abdul Wahab, Nur Suhaili, Mohd Firdaus Omar, Hazizan Md Akil, Zainal Arifin Ahmad, and N. Z. Noimam. "Effect of Surface Modification on Rice Husk (RH)/Linear Low Density Polyethylene (LLDPE) Composites under Various Loading Rates." Materials Science Forum 840 (January 2016): 3–7. http://dx.doi.org/10.4028/www.scientific.net/msf.840.3.

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The surface modification of RH filler was carried out using silane coupling agents in order to improve the adhesion between LLDPE and RH. RH was treated using silane coupling agent at four different concentrations (1, 3, 5 and 7 %) at room temperature. In this study, both untreated and treated RH/LLDPE composites were tested under static (0.001 s-1, 0.01 s-1 and 0.1 s-1) and dynamic loading rates (650 s-1, 900 s-1 and 1100 s-1) using universal testing machine and split Hopkinson pressure bar apparatus, respectively. Results show that the 5% treated LLDPE/RH composite shows the higher ultimate

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Bhattacharya, Soumya, H. Hatwal, and A. Ghosh. "On the optimum design of Stewart platform type parallel manipulators." Robotica 13, no. 2 (1995): 133–40. http://dx.doi.org/10.1017/s026357470001763x.

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SummaryThis paper studies the static rigidity behaviour of a parallel manipulator with legs modelled as elastic members under axial loading. Structurally, a parallel module is more rigid compared to a serial module and is expected to take heavier payloads. Therefore, a guidance for design of such parallel manipulators is needed which leads to maximum rigidity over the workspace. In the present work, the authors propose the concept of the flexibility ellipsoid for a parallel system. Various scalar measures of rigidity are formulated on the basis of the proposed ellipsoid. An algorithm, involvin

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