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Journal articles on the topic 'Lateral resistance coefficient'

Author: Grafiati

Published: 28 June 2021

Last updated: 3 February 2022

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1

Yin, Ya Jun, Xue Wen Xie, and Yong Mei Qian. "The Research of Horizontal Resistance Coefficient of Pile Lateral Soil in Horizontal Loads." Applied Mechanics and Materials 501-504 (January 2014): 228–33. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.228.

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By finite element method and on the basis of measured data of horizontal static test of pile foundation, the article analyzed horizontal lateral resistance of pile lateral soil under the interaction of piles and soil and horizontal resistance coefficient of foundation soil. The results prove that weighting horizontal resistance coefficient ( m) of foundation soil and the displacement of pile top changed in the reduce of hyperbolic. Meanwhile, it indicates that the constraints of pile top can enhance pile horizontal resistance obviously.

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2

Griffiths, Terry, David J. White, Scott Draper, et al. "Lateral resistance of “rigid” pipelines and cables on rocky seabeds." Canadian Geotechnical Journal 56, no. 6 (2019): 823–39. http://dx.doi.org/10.1139/cgj-2018-0208.

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Accurate assessment of lateral resistance is critical to ensure the on-bottom stability and integrity of subsea pipelines and cables in the oil–gas and marine renewable energy industries. However, on rocky seabeds recommended practices provide limited recommendations on pipe–seabed interaction, suggesting only a single value for the friction coefficient of 0.6. This paper reports on a programme of physical experiments and theoretical modelling investigating the lateral resistance of pipes on rocky seabeds. It is shown that the peak and mean effective friction can significantly exceed the inter

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3

Kong, L. G., and L. M. Zhang. "Experimental study of interaction and coupling effects in pile groups subjected to torsion." Canadian Geotechnical Journal 45, no. 7 (2008): 1006–17. http://dx.doi.org/10.1139/t08-038.

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Piles in a pile group subjected to torsion simultaneously mobilize lateral and torsional resistances. Hence, complicated pile–soil–pile interaction effects and load deformation coupling effects occur in the pile group. In this study, a series of centrifuge model tests were carried out to investigate these effects in three-diameter spaced 1 × 2, 2 × 2, and 3 × 3 pile groups subjected to torsion in both loose and dense sands. The test results showed that the effect of horizontal movement of a pile on lateral behaviors of its adjacent piles is significant in 3 × 3 pile groups and such effect vari

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Skvortsov, K. D., and A. I. Osokin. "Optimization of the formulaof the design resistance of soil." Вестник гражданских инженеров 17, no. 5 (2020): 117–22. http://dx.doi.org/10.23968/1999-5571-2020-17-5-117-122.

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The assumptions made in the derivation of the formula for the design soil resistance are considered. It is shown that in the conditions of the plane problem, taking into account the coefficient of lateral soil pressure leads to lower values of the initial critical load and, consequently, to a decrease in the design resistance. The equation of limiting equilibrium is implemented in the MathCad software package, which makes it possible to obtain isolines of deviation angles at any depth from the applied uniformly distributed load. To determine the initial critical load, a formula is given that t

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Hosseini, Ahmad, and Morteza Esmaeili. "Effect of different contact surfaces between concrete sleeper and ballast on mobilized lateral resistance against impact loads." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 231, no. 6 (2016): 678–89. http://dx.doi.org/10.1177/0954409716636924.

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The amount of ballast particles surrounding a railway track significantly influences its resistance in all directions. As time goes by, with the development of high-speed trains, more attention has been paid to this issue owing to the increase in dynamic effects of rolling stock on track loading. The focus of the present study is on the investigation of the interaction between different surfaces (base, crib, and shoulder) of concrete sleeper and their adjacent ballast layer along with the related parameters under lateral impact loading condition. In this regard, by utilizing a pendulum loading

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6

Li, Feng, Shen Li, Guan Nan Wu, and Dong Wang. "Experimental Investigation on Four Types of Steel Plate Shear Walls." Applied Mechanics and Materials 166-169 (May 2012): 657–63. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.657.

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The overall seismic performance of steel plate shear walls, including unstiffened SPSW, cross-stiffened SPSW, and SPSW with opening, SPSW with slits and holes, under low cyclic loading were tested. Contrastive analyze their hysteretic curve, loading capacity, lateral stiffness, ductility and energy dissipation coefficient. Results indicate that the unstiffened SPSW seem to be with high resistance lateral stiffness and carrying capacity; however its hysteretic curve show pinch effect obviously. When cross-stiffener was set on unstiffened SPSW, the resistance lateral stiffness and loading capaci

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Shobolova, Т. А., S. V. Obolensky, and Yu А. Kabalnov. "RADIATION RESISTANT BIPOLAR SOI TRANSISTORS." Electronic engineering Series 2 Semiconductor devices 258, no. 3 (2020): 34–42. http://dx.doi.org/10.36845/2073-8250-2020-258-3-34-42.

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In this paper the new design of lateral bipolar transistors is presented, made on the basis of the charge carrier transport modeling. New design provides high level of base current transmission coefficient and enhanced radiation resistance. The manufacturing technology of the lateral bipolar transistors is compatible with a submicron SOI CMOS technology and can be of vital importance when developing RF analogue-to-digital microcircuits for ionizing radiation resistant satellite-navigation equipment.

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8

Yang, Yi Bo, Zhao Qiong Lai, Li Tao Ai, Wen Ying Guo, Hong Jian Huang, and Heng Chang Wang. "Experimental Research on the Evaluation Method of the Resistance to Chloride Ion Penetration of Autoclaved PHC Pile." Key Engineering Materials 629-630 (October 2014): 587–92. http://dx.doi.org/10.4028/www.scientific.net/kem.629-630.587.

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The usage of autoclaved PHC pile in chloride environment becomes common, so how to evaluate the resistance to chloride ion penetration of autoclaved PHC pile becomes urgent. This article Compare the resistance to chloride ion penetration of pile and pile concrete specimens based the Rapid Chloride Migration Synthesis Method and RCM. The results show that the Rapid Chloride Migration Synthesis Method is not suitable for pile, RCPT and RCM are suitable for pile; the resistance to chloride ion penetration of the pile inner and outer lateral concrete has a rather large different, so the sample mus

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9

Luo, Guanwen, Leming Cheng, Liyao Li, Junfeng Wang, Xiaoguo Jiang, and Weiguo Zhang. "Effect of Connection Resistance between Cyclones and Backpass on Furnace Solids Suspension Density Profile and Circulation Rates in CFB." Energies 14, no. 19 (2021): 6162. http://dx.doi.org/10.3390/en14196162.

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The connection section between cyclones and backpass is an important configuration in multi-cyclone circulating fluidized bed boilers (CFB). In this work, the resistance coefficient of different connection modes, and connection resistance distribution from each cyclone outlet to backpass (connection branch) in one mode are defined and calculated, in order to investigate their effects on furnace solids suspension density distribution and circulation rates. Three connection modes with different overall resistance coefficients were tested experimentally and analyzed by a 1.5-dimensional model in

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10

Yeo, Na Eun, Doo-In Kim, and Myung Yung Jeong. "Compressive and Shear Resistances of Confined Water Droplet in Sliding Motion Against Hydrophobic Counterpart." Science of Advanced Materials 12, no. 4 (2020): 589–93. http://dx.doi.org/10.1166/sam.2020.3671.

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The compressive and shear resistances of the water droplet confined between the hydrophobic surfaces were investigated to evaluate the effect of the micro-scale surface pattern on the repulsive capillary force and friction of droplet. The hydrophobic surfaces covered with square pillar structures in the hexagonal array were prepared and the repulsive normal load and friction coefficient of the droplet were characterized. The force measurements in the vertical and lateral directions on the droplet confined between the prepared hydrophobic surfaces revealed that the compressive resistance to the

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11

Jabonero, Christopher, Jin-Whoy Park, SungWoo Ryu, Wuguang Lin, and Yoon-ho Cho. "Development of a multi-modal overlay tester for the evaluation of asphalt overlay cracking behaviors." Canadian Journal of Civil Engineering 47, no. 11 (2020): 1258–66. http://dx.doi.org/10.1139/cjce-2019-0227.

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Reflection cracking is a critical issue in asphalt overlay pavement. Temperature variation and traffic loading are the main fracture modes acting on the material. In this paper, a multi-modal overlay tester is proposed for the evaluation of the reflection cracking resistance of an asphalt mixture, an approach that simulates three loading modes on asphalt specimens. A fine dense-grade hot mix asphalt is used as the test specimen and subjected to different loading conditions such as single Mode I, II, and III loading simulations and combined I+II and I+II+III loading simulations. Results show co

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12

Krasnoshchekov, Y. V. "LATERAL FORCE PERCEIVED BY CONCRETE IN THE INCLINED SECTION OF REINFORCED CONCRETE ELEMENTS." Vestnik SibADI 15, no. 3 (2018): 434–44. http://dx.doi.org/10.26518/2071-7296-2018-3-434-444.

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Introduction. The article presents results of the empirical dependence analysis of transverse force in the inclined section of reinforced concrete elements.Materials and methods. Long-term application of such dependence at the reinforced concrete design demonstrates high parameters’ reliability. Thus, analyzed information could be used in innovated calculation model, which includes joint action of cross forces and bending moments.Results. The analysis of empirical dependence by the design standards seems to obtain information about the limit value of shear stresses in the compressed zone of in

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Zan, Yingfei, Ruinan Guo, Lihao Yuan, and Zhaohui Wu. "Experimental and Numerical Model Investigations of the Underwater Towing of a Subsea Module." Journal of Marine Science and Engineering 7, no. 11 (2019): 384. http://dx.doi.org/10.3390/jmse7110384.

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In underwater towing operations, the drag force and vertical offset angle of towropes are important considerations when choosing and setting up towing equipment. The aim of this paper is to study the variation in drag force, vertical offset angle, resistance, and attitude for towing operations with a view to optimizing these operations. An underwater experiment was conducted using a 1:8 scale physical model of a subsea module. A comprehensive series of viscous Computational Fluid Dynamics (CFD) simulations were carried out based on Reynolds-averaged Navier–Stokes equations for uniform velocity

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14

Prachasaree, Woraphot, Sitthichai Piriyakootorn, Athawit Sangsrijun, and Suchart Limkatanyu. "Behavior and Performance of GFRP Reinforced Concrete Columns with Various Types of Stirrups." International Journal of Polymer Science 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/237231.

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Fiber reinforced polymer (FRP) composites are gaining acceptance in concrete structural applications due to their high ratio of strength/stiffness to self-weight and corrosion resistance. This study focused on the structural behavior and the performance of concrete columns internally reinforced with glass fiber reinforced plastic (GFRP) rebars. Twelve series of concrete columns with varied longitudinal reinforcement, cross section, concrete cover, and type of lateral reinforcement were tested under compression loading. The results show that the amount of GFRP longitudinal and lateral reinforce

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15

Maślak, Mariusz, Krzysztof Kuchta, and Marcin Łukacz. "Bending resistance of steel beams with corrugated web under fully developed fire." Budownictwo i Architektura 12, no. 2 (2013): 229–36. http://dx.doi.org/10.35784/bud-arch.2136.

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More accurate design algorithm helpful in bending resistance evaluation of steel beams with corrugated web exposed to fully developed fire is presented and discussed in detail. The condition of fire resistance limit state is proposed to be determined by the interactive formula based on the consideration of biaxial bending in which the transverse out-of-plane bending phenomenon is the spatial effect of in-plane shear. Such an influence, usually neglected in formal models dealing with the persistent design situation, can become more significant under fire conditions, when the steel yield point d

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16

Lee, Allan Y. "Coordinated Control of Steering and Anti-Roll Bars to Alter Vehicle Rollover Tendencies." Journal of Dynamic Systems, Measurement, and Control 124, no. 1 (1998): 127–32. http://dx.doi.org/10.1115/1.1434982.

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A Variable Dynamic Testbed Vehicle is presently being built for the National Highway Traffic Safety Administration. It will have four-wheel steering, front and rear active antiroll bar systems, four adjustable dampers, and other active controls. Using these active devices, we can alter the vehicle’s understeer coefficient, front/rear load transfer distribution in high-g lateral maneuvers, and roll mode frequency and damping. This study investigates how these active systems could be controlled to alter the vehicle rollover tendencies. In particular, we study how an increased front antiroll bar

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17

RYNIEWICZ, Wojciech, Mariola HERMAN, Anna M. RYNIEWICZ, et al. "TRIBOLOGICAL TESTS OF THE NANOMATERIALS USED TO RECONSTRUCT MOLARS AND PREMOLARS WITH THE APPLICATION OF THE DIRECT METHOD." Tribologia 273, no. 3 (2017): 155–64. http://dx.doi.org/10.5604/01.3001.0010.6253.

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Physiological abrasion of teeth is a process of gradual loss of the hard tissue of opposite teeth resulting from age-related natural dental wear. In abrasion, the cusps and their slopes in the jaw and the mandible become flattened due to the mechanical load applied. The aim of this paper is to carry out a tribological and microstructural evaluation of modern composite materials used to reconstruct the teeth in the lateral part of the dental arch. Five light-cured composite materials were selected for tests. The tests involved the coefficient of friction and resistance to wear in a sliding cont

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18

Beltaos, S. "Configuration and properties of a breakup jam." Canadian Journal of Civil Engineering 15, no. 4 (1988): 685–97. http://dx.doi.org/10.1139/l88-089.

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Favourable weather conditions in January, 1986, resulted in a breakup jam on the Thames River that froze in place. This afforded safe access and performance of detailed thickness measurements that are normally not possible to obtain. The thickness of the jam is highly variable in the lateral direction but without consistent trends, which, in a crude sense, justifies the assumption of lateral uniformity made for analytical purposes. In the downstream direction, the thickness increased, except for a short reach downstream of the toe where it rapidly decreased to zero. Approximate assessment of t

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19

Baronins, Janis, Vitali Podgursky, Maksim Antonov, Sergei Bereznev, and Irina Hussainova. "Electrochemical Behaviour of TiCN and TiAlN Gradient Coatings Prepared by Lateral Rotating Cathode Arc PVD Technology." Key Engineering Materials 721 (December 2016): 414–18. http://dx.doi.org/10.4028/www.scientific.net/kem.721.414.

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TiCN and TiAlN gradient coatings were deposited on the AISI 316L stainless steel substrates by lateral rotating cathode arc (LARC) physical vapour deposition (PVD) technology. Corrosion and tribocorrosion behaviour was studied in 3.5 wt. % NaCl solution. The thickness of coatings was about 3 μm. For both coatings the corrosion potential shifted to more positive values as compared to the uncoated substrate. The corrosion current density decreased for TiCN and TiAlN coatings indicating up to 40 folds higher polarization resistance. The coefficient of friction value of TiCN coating is three times

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20

Holzheimer, G., and D. Winne. "Influence of distension on absorption and villous structure in rat jejunum." American Journal of Physiology-Gastrointestinal and Liver Physiology 256, no. 1 (1989): G188—G197. http://dx.doi.org/10.1152/ajpgi.1989.256.1.g188.

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In urethan-anesthetized rats the appearance rates of urea (U), antipyrine (A), and alpha-methyl-D-glucoside (MG) in the venous blood of perfused jejunal segment were measured in the undistended state and after elevation of the intraluminal pressure up to 10 cmH2O. Serosal and inner cylindrical surface area of the jejunal segment were enlarged by maximally 100 and 150%, respectively. The absorption rates, however, increased only by 34 (U), 28 (A), and 26% (MG). The increase of the supravillous diffusion resistance contributed only partially to this effect. The "cylindrical" permeability coeffic

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21

Zachariah, S. G., and J. E. Sanders. "Standing interface stresses as a predictor of walking interface stresses in the trans-tibial prosthesis." Prosthetics and Orthotics International 25, no. 1 (2001): 34–40. http://dx.doi.org/10.1080/03093640108726566.

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Interface pressures and shear stresses within the socket, in standing and walking, were measured for two unilateral, male, trans-tibial amputee subjects, during two sessions each. The ratios of equal weight-bearing standing stresses to peak walking stresses showed regional variation, ranging from 0.24:1 for pressure over the anterior region to 1.01:1 for resultant interface shear stress over the lateral region. Interface stresses in standing were only moderate predictors of peak walking stresses. The best correlation coefficient between standing in full weight-bearing and peak walking stress w

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22

Bagheri, Ahmad, Shahram Azadi, and Abbas Soltani. "A combined use of adaptive sliding mode control and unscented Kalman filter estimator to improve vehicle yaw stability." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 231, no. 2 (2016): 388–401. http://dx.doi.org/10.1177/1464419316673960.

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In this paper, an adaptive sliding mode controller is proposed to improve the vehicle yaw stability and enhance the lateral motion by direct yaw moment control method using active braking systems. As the longitudinal and lateral velocities of the vehicles as well as many other vehicle dynamics variables cannot be measured in a cost-efficient way, a robust control method combined with a state estimator is required to guarantee the system stability. Furthermore, some parameters such as the tyre–road friction coefficient undergo frequent changes, and the aerodynamics resistance forces are often e

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23

Makarov, Vladimir, Yuriy Molev, Dimitriy Proshin, and Maksim Cherevastov. "Response of Motor Vehicles, Front and Rear Axles of Which Are Fitted with Different Tires. Main Aspects." MATEC Web of Conferences 329 (2020): 01012. http://dx.doi.org/10.1051/matecconf/202032901012.

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This work shows the modelling of change of such a controllability indicator as the stabilization time, using the design model of a vehicle with tires of different stiffness on the front and rear axles. The influence of the change in the lateral slip resistance coefficient of the front and rear wheels of the vehicle on the safe speed at which the stabilization reaction of the vehicle to the steering wheel turn will be aperiodic monotonic rather than oscillating, is established. The dependences of the magnitude of the stabilization time on the degree of change in the lateral slip resistance coef

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24

Fitriadhy, Ahmad, Sun Yin Lim, and Adi Maimun. "Prediction of an Optimum Total Resistance Coefficient on Catamaran using Design of Experiment (DOE) Incorporated with CFD Approach." EPI International Journal of Engineering 3, no. 1 (2020): 74–83. http://dx.doi.org/10.25042/epi-ije.022020.11.

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In presence of complex hydrodynamic interferences between two demihulls on a catamaran ship has been prone to have a reliable prediction to her optimum total resistance. To achieve this, the author presents a Computational Fluid Dynamic (CFD) modelling incorporated with Design of Experiment (DOE) approach. Several parameters such as effect of Froude number ( ) with respect to various lateral separation ratios (S/L) of the catamaran have been taken into account. Here, the optimum total resistance coefficient (CT) has been mainly set within the range of S/L ratio 0.2 ≤ S/L ≤ 0.4 associated with

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25

Kennedy, J. A., and J. J. Dias. "Effect of triggering and entrapment on tendon gliding properties following digital flexor tendon laceration: in vitro study on turkey tendon." Journal of Hand Surgery (European Volume) 39, no. 7 (2013): 708–13. http://dx.doi.org/10.1177/1753193413490898.

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The optimal management of partial flexor tendon laceration is controversial and remains a clinical challenge. Abnormal tendon gliding (triggering and entrapment) was assessed at the A2 pulley in 40 turkey tendons in three groups: intact, partially divided (palmar or lateral), and trimmed. Testing was of gliding resistance and friction coefficient at 30° and 70° of flexion, loaded with 2 and 4 N. We observed for triggering and entrapment. The changes in gliding properties were compared and analysed using Wilcoxon matched pair testing. A significant difference was found in the change in gliding

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26

Sun, Qiang, Qiu Yi Lin, and Jing Wei Wu. "Determined Methods of Dynamic Stability Critical Length of the Foundation Pile." Advanced Materials Research 261-263 (May 2011): 1434–38. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1434.

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Based on the principle of elastic stability, this paper deduces the calculating formulas for dynamic stability critical length of foundation piles when lateral syntony occurs under the axial dynamic loads, and analyzes the effects on dynamic stability critical length of foundation piles from the aspects of parameters such as section dimensions of piles, horizontal resistance forces of foundation soil and excitation frequency etc. Study shows that different soil stratum has the bigger effects on the critical length of piles, while damping coefficient smaller. It also puts forward some related m

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DIZHUR, E. M., A. N. VORONOVSKY, A. V. FEDOROV, I. N. KOTEL'NIKOV та S. E. DIZHUR. "PRESSURE-INDUCED TRANSITION OF 2DEG IN δ-DOPED GaAs TO INSULATING STATE". International Journal of Nanoscience 06, № 03n04 (2007): 209–13. http://dx.doi.org/10.1142/s0219581x07004602.

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The tunneling and the lateral conductance of 2DEG formed in the GaAs with the δ-doped layer were measured simultaneously at hydrostatic pressures at helium temperatures. The resistivity of the δ-doped layer sharply increases by > 3 orders of magnitude at about 2 GPa, and its temperature coefficient changes from ~ - 0.04 to ~ - 4 K -1. The tunneling resistance shows only slight change of exponential behavior at about 1.5 GPa, while a drastic change of the Zero Bias Anomaly (ZBA) takes place just at the metal–insulator transition. Such a behavior is interpreted in terms of pressure dependence

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28

Azinović, Boris, David Koren, and Vojko Kilar. "Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings." Open Civil Engineering Journal 8, no. 1 (2014): 105–16. http://dx.doi.org/10.2174/1874149501408010105.

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Recently, an increasing trend of passive and low-energy buildings transferring from non earthquake-prone to earthquake-prone regions has thrown out the question about the seismic safety of such buildings. The paper describes the most commonly used details of energy efficient construction, which could be critical from the point of view of earthquake resistance. The paper focuses on the prevention of ground floor slab thermal bridge and presents a case study on the seismic response of multi-storey wooden buildings founded on the RC foundation slab lying on a thermal insulation (TI) layer made of

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Nagao, T. "An Experimental Study on the Way Bottom Widening of Pier Foundations Affects Seismic Resistance." Engineering, Technology & Applied Science Research 10, no. 3 (2020): 5713–18. http://dx.doi.org/10.48084/etasr.3590.

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The resistance of a pier to horizontal loads, like seismic loads, is due to the flexural rigidity of its foundations and the horizontal subgrade reaction. In the event of a massive earthquake, the latter becomes very small because of the softening of the ground, while the structure may experience a large inertial force and lateral spreading pressure. Therefore, structures with high seismic resistance are required in areas with high seismicity. When a wide caisson is used as a pier foundation, a rotational resistance moment caused by the vertical subgrade reaction acting on the foundation botto

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Li, Qiang, and Chang Gao Xia. "Research of Electric Power Steering System Assistance Characteristic Based on the Identification of the Road." Advanced Materials Research 756-759 (September 2013): 4401–6. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.4401.

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Study of traditional assist characteristic cure does not take into account the difference of steering resistance torque caused by different road adhesion coefficient. Vehicle dynamics analysis model is established based on ADAMS/CAR. Simulation of steering wheel torque is realized under different road conditions. Departure from the ideal boost characteristics requirements and combined with ideal steering wheel torque under different speed and lateral acceleration., the article built assist characteristic curve under a certain road conditions. The system can real-time select the assist characte

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B., De la Cruz-Torres. "Ultrasound-guided percutaneous neuromodulation in chronic lateral elbow pain." Revista Fisioterapia Invasiva / Journal of Invasive Techniques in Physical Therapy 02, no. 02 (2019): 103–4. http://dx.doi.org/10.1055/s-0039-3401878.

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Abstract Background Lateral epicondylalgia (LE), also known as tennis elbow, refers to a painful condition around the lateral epicondyle of the humerus and the common extensor tendon, which worsens with dorsiflexion and/or wrist supination against resistance. The aim of this study was to evaluate the effect of ultrasound-guided percutaneous neuromodulation (PNM) applied to the radial nerve in relation to pain, functionality, electrophysiological excitation and the morphology of the nerve in patients with chronic lateral epicondylalgia. Material and Methods A randomized clinical trial was perfo

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Stawowiak, Michał, Marcel Żołnierz, and Zenon Rożenek. "Research on the coefficient of friction of becorit K22 and K25SB linings." New Trends in Production Engineering 2, no. 1 (2019): 367–75. http://dx.doi.org/10.2478/ntpe-2019-0039.

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Abstract The article presents the method and results of experimental tests of the coefficient of friction between a steel rope and friction lining. The BECORIT K22 and BECORIT K25SB floor coverings were tested. The tests were carried out in accordance with the recommendations of the new German standard: DIN 21258 – Lubricants and impregnating agents for drive discs and transport ropes in mining – safety and testing requirements. The authors in this article emphasize that the Becorit K22 and K25SB linings are used for the wheels of propeller drums of mining machines. Characterized by high coeff

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Anoushehei, Majid, and Farhad Daneshjoo. "Geometric Parameters and Behavior Factor of Knee-Braced Steel Frames Using Nonlinear Static Pushover (NSP) Analyses." Modern Applied Science 10, no. 11 (2016): 110. http://dx.doi.org/10.5539/mas.v10n11p110.

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During the recent years, the new knee-braced frame (KBF) system has been interested to achieve a proper seismic behavior. Briefly introducing KBF, the present study evaluates the geometric parameters and behavior factor of multi-story knee-braced steel frames. The studied models include three-, five- and eight-story steel CBFs, EBFs and KBFs. Using linear static analyses, the present study evaluates lateral stiffness of knee-braced frames and plots their co-stiffness curves. Using co-stiffness curves, then, the best range is determined for geometric parameters of KBFs to achieve the proper sti

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Wijewickreme, Dharma, Hamid Karimian, and Douglas Honegger. "Response of buried steel pipelines subjected to relative axial soil movement." Canadian Geotechnical Journal 46, no. 7 (2009): 735–52. http://dx.doi.org/10.1139/t09-019.

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The performance of buried steel pipelines subjected to relative soil movements in the axial direction was investigated using full-scale pullout testing in a soil chamber. Measured axial soil loads from pullout testing of pipes buried in loose dry sand were comparable to those predicted using guidelines commonly used in practice. The peak values of axial pullout resistance observed on pipes buried in dense dry sand were several-fold (in excess of 2 times) higher than the predictions from guidelines; the observed high axial pullout resistance is primarily due to a significant increase in normal

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35

Gao, Rui, and Ling Qiang Yang. "Analysis of Rock Slope Stability Using Anti-Slide Pile." Advanced Materials Research 446-449 (January 2012): 2470–73. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.2470.

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Using the measured experimental field data of two faults of a rock slope engineering, based on the large number of measured data analysis results of similar projects and rock style to determine the internal friction angle of the fault.the method of how to choose the good date was given. Back analysis method and number fitting method was used to determine the cohesion of fault; anti-slide pile is the lateral force column, the relation of the four failure modes of anti-slide pile was considered. The statistical parameters of resistance of anti-slide pile was calculated by structure mechnics. The

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Avila, Jorge A., and Jorge Arturo Avila-Haro. "Structural Safety Review of a Building Damaged by Explosion in Mexico City." Key Engineering Materials 713 (September 2016): 111–14. http://dx.doi.org/10.4028/www.scientific.net/kem.713.111.

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The structural assessment of a building damaged by the effects of an explosion located in Mexico City is presented. The structure consists in 12 complete levels, a thirteenth partially completed level for elevators, and a basement. The building is mainly conformed of steel frames with box columns, I-beams and trusses; peripherally reinforced concrete slabs attached to girders through shear connectors; its reinforced concrete box foundation (basement slab, grade beams and floor slab) is supported on control piles at a depth of 5.9 m. The building did not present any damage in the 1985 Mexico Ci

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Das, Mrinal K., Q. Jon Zhang, Robert Callanan, et al. "A 13 kV 4H-SiC n-Channel IGBT with Low R_diff,onand Fast Switching." Materials Science Forum 600-603 (September 2008): 1183–86. http://dx.doi.org/10.4028/www.scientific.net/msf.600-603.1183.

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For the first time, high power 4H-SiC n-IGBTs have been demonstrated with 13 kV blocking and a low Rdiff,on of 22 mWcm2 which surpasses the 4H-SiC material limit for unipolar devices. Normally-off operation and >10 kV blocking is maintained up to 200oC base plate temperature. The on-state resistance has a slight positive temperature coefficient which makes the n-IGBT attractive for parallel configurations. MOS characterization reveals a low net positive fixed charge density in the oxide and a low interface trap density near the conduction band which produces a 3 V threshold and a peak chann

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Lukaszkowicz, Krzysztof, Justyna Wiśniewska, Agnieszka Paradecka, and Paulina Borylo. "Characteristics of Hybrid Coating Deposited by PVD and PACVD Process." Advanced Materials Research 1036 (October 2014): 225–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.225.

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Deposited on hot work tool steel substrate coating system composed of AlTiCrN film covered by diamond-like carbon (DLC)-based lubricant, was the subject of the studies. The AlTiCrN and DLC layers were deposited by PVD lateral rotating ARC-cathodes (LARC) and PACVD technology on the X40CrMoV5-1 respectively. This paper provides an analysis of the microstructure, mechanical and tribological properties. Several surface sensitive techniques and methods, i.e. High Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscopy (SEM), Raman spectroscopy and ball-on-disk were used t

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Bogdanov, V. L., T. A. Vyshemyrska, A. Ya Grigorenko, N. N. Tormakhov, and P. S. Flis. "RELATIONSHIP BETWEEN PARAMETERS OF THE DENTAL APPARATUS AND RESPIRATORY ORGANS IN ORTHODONTIC TREATMENT." Ukrainian Dental Almanac, no. 2 (June 29, 2021): 87–94. http://dx.doi.org/10.31718/2409-0255.2.2021.16.

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The dental apparatus and the respiratory organs of the skull are closely related. Respiratory tract defects lead to mouth breathing and abnormalities in the development of the dental apparatus. Elimination of dental anomalies does not guarantee against recurrence of dental diseases and encourages the improvement of methods of comprehensive examination and diagnosis. There are many methods for determining the transverse parameters of the facial skull: by diagnostic models or by frontal teleradiography. These methods do not always reflect the true position of the facial skull. We have proposed a

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Ji, Guomin, and Muk Chen Ong. "On-Bottom Stability of Umbilicals and Power Cables for Offshore Wind Applications." Energies 12, no. 19 (2019): 3635. http://dx.doi.org/10.3390/en12193635.

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With the increase in offshore wind farms, the demands for umbilicals and power cables have increased. The on-bottom stability of umbilicals and power cables under the combined wave and current loading is the most challenging design issue, due to their light weight and the complex fluid–cable–soil interaction. In the present study, the methodology for dynamic lateral stability analysis is first discussed; and the reliable hydrodynamic load model and cable–soil interaction model based on large experimental test data are described in detail. The requirement of the submerged weight of a cable w s

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Markogiannaki, Olga, and Ioannis Tegos. "Strengthening of a Multistory R/C Building under Lateral Loading by Utilizing Ties." Applied Mechanics and Materials 82 (July 2011): 559–64. http://dx.doi.org/10.4028/www.scientific.net/amm.82.559.

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The scope of the study is to examine of the possibility of applying steel ties, which can consist of common steel wires, as means to restrain the seismic displacements of buildings structural systems. The method seems to be competitive to the conventional ones, since fewer disturbances are created during the retrofitting works, i.e. the installation of ties as compared to the conventional strengthening methods. The method also proved to be more economic than the conventional method of constructing and infilling concrete walls in the vulnerable structural system. Initially, the efficiency of th

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Timofeev, Pavel. "FLOW SIMULATION OVER REENTRY CAPSULE AT SUPERSONIC AND HYPERSONIC SPEEDS. THE COMPARE BETWEEN TWO REENTRY CAPSULES. PART 2." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 62 (2020): 52–60. http://dx.doi.org/10.15593/2224-9982/2020.62.06.

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This study is a continuation of the first part “Flow simulation over reentry capsule at supersonic and hypersonic speeds. The comparison between two reentry capsules. Part 1”. This study presents a comparison between two reentry capsules, which are made in Russia. Numerical algorithms solve for the CFD method, which is produced using help ANSYS Fluent 19.2. The using GPU core to get a solution faster. The main purpose – flow simulation and numerical analysis two tips reentry capsule understand the behavior of supersonic and hypersonic flow and its effect on the reentry capsule; compare tempera

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Fang, Shu, Zhen Wei Zhang, and Lei Zhang. "Turning Dynamics of Series Hybrid Power All-Terrain Vehicle." Advanced Materials Research 512-515 (May 2012): 2620–24. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.2620.

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The complex and unstructured working environment of all-terrain vehicle cause large resistance when they are turning. The turning power which affects a lot on the mobility of all-terrain vehicle is much larger than the power in running straight. In this paper, a series hybrid power system of an all-terrain fire robot was discussed, the turning model of the robot is simplified to 2D mechanical model, force analysis was made, a power formula in which the power is only related to the drag coefficient and relative turning radius was derived, and a dynamic model based on the driving power of latera

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Alawneh, Ahmed Shlash, Abdallah I. Husein Malkawi, and Husein Al-Deeky. "Tension tests on smooth and rough model piles in dry sand." Canadian Geotechnical Journal 36, no. 4 (1999): 746–53. http://dx.doi.org/10.1139/t98-104.

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In order to delineate the significant variables affecting the ultimate uplift shaft resistance of a pile in dry sand, a testing program comprising 64 pullout tests was conducted on open- and closed-ended rough and smooth model piles of two sizes (41 and 61 mm outside diameter). The model piles were installed in medium dense and dense sand to an embedded depth of 0.8 m using two methods of pile placement, static jacking and driving. A rigid steel box measuring 1.1 × 1.1 × 1.3 m was used as a sand container. The results obtained from this study indicated that pile placement method, initial sand

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Chen, Yen-Shu, Kuo-Hsiang Chien, Chi-Chuan Wang, Tzu-Chen Hung, Yuh-Ming Ferng, and Bau-Shei Pei. "Investigations of the Thermal Spreading Effects of Rectangular Conduction Plates and Vapor Chamber." Journal of Electronic Packaging 129, no. 3 (2006): 348–55. http://dx.doi.org/10.1115/1.2753970.

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This study examines the spreading ability of rectangular plates numerically, analytically, and experimentally. The effect of aspect ratio, defined as an equivalent radius of a heater divided by that of a spreader plate, is investigated. The numerical results show a very good agreement with the analytical solutions. From the calculated results, the spreading resistance of the conduction plates with a small aspect ratio is higher than the one-dimensional conduction resistance. Calculated results also show that the spreading ability of a metal plate would be affected slightly by the external conv

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Ahmed, A. M., N. A. Duncan, and M. Tanzer. "In Vitro Measurement of the Tracking Pattern of the Human Patella." Journal of Biomechanical Engineering 121, no. 2 (1999): 222–28. http://dx.doi.org/10.1115/1.2835107.

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This study sought to determine whether a general pattern describing the three-dimensional tracking characteristics of the human patella could be established, and if not, then to determine the extent and nature of interspecimen variations in the characteristics in a normal population. Using 32 fresh-frozen knees subjected to extensor moment magnitudes similar to those in “static-lifting” and “leg-raising against resistance” maneuvers, patellar displacements were measured in the knee extension range 120 to 0 deg. For static-lifting, a constant foot-floor reaction of 334 N was applied. For leg-ra

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Fatemi, Hediyeh, Hongjun Zeng, John Carlisle, and Reza Abdolvand. "High-Frequency Thin-Film AlN-on-Diamond Lateral–Extensional Resonators." Microelectromechanical Systems, Journal of 22, no. 3 (2013): 678–86. http://dx.doi.org/10.1109/jmems.2013.2240259.

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In this paper, low-impedance lateral–extensional microresonators are fabricated on a stack of aluminum nitride (AlN) directly deposited on a polished ultrananocrystalline diamond (UNCD) film. The large acoustic velocity of UNCD is utilized to extend the frequency of such resonators beyond 1 GHz while the frequency-defining features are not reduced excessively. In order to promote the growth of a <jats:formula formulatype="inline"><jats:tex Notation="TeX">$c$</jats:tex> </jats:formula>-plane piezoelectric AlN film, the surface of the UNCD film is polished after depositio

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Herms, Martin, Matthias Wagner, Alexander Molchanov, Mathias Rommel, Markus Zschorsch, and Sindy Würzner. "Comparative Spatially Resolved Characterization of a Czochralski-Grown Silicon Crystal by Different Laser-Based Imaging Techniques." Solid State Phenomena 242 (October 2015): 478–83. http://dx.doi.org/10.4028/www.scientific.net/ssp.242.478.

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The axial distribution of electrical and optical properties of a 4 inch Czochralski-grown silicon single crystal were analyzed by different methods that can be applied in the scanning mode. These methods were tested with respect to the suitability to reveal growth striations. The residual stress was visualized by SIRIS (Scanning Infrared Stress Inspection System) and SIREX (Scanning Infrared Stress Explorer), the electrical resistivity by LPS (Lateral Photovoltage Scanning) and SRP (Spreading Resistance Profiling), and the lifetime of the minority charge carriers by MDP (Microwave Detected Pho

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Wong, J. Y., and C. F. Chiang. "A general theory for skid steering of tracked vehicles on firm ground." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 215, no. 3 (2001): 343–55. http://dx.doi.org/10.1243/0954407011525683.

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A general theory for skid steering of tracked vehicles under steady state conditions on firm ground, taking into account the shear stress-shear displacement relationship on the track-ground interface, is presented. The steering behaviour predicted using the general theory bears a strong resemblance to that observed in the field. The variations of sprocket torques for the outer and inner tracks with turning radius predicted by the general theory are in reasonably close agreement with available experimental data. On the other hand, predictions based on Steeds’ theory developed earlier differ gre

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Zheng, Li, Zhang Wenda, Han Ruihua, and Tian Yongsheng. "Design and Performance Analysis of Distributed Equal Angle Spiral Vertical Axis Wind Turbine." Recent Patents on Engineering 14, no. 1 (2020): 120–32. http://dx.doi.org/10.2174/1872212113666191002150551.

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Background: The wind turbine is divided into a horizontal axis and a vertical axis depending on the relative positions of the rotating shaft and the ground. The advantage of the choke wind turbine is that the starting torque is large and the starting performance is good. The disadvantage is that the rotation resistance is large, the rotation speed is low, the asymmetric flow occurs when the wind wheel rotates, the lateral thrust is generated, and the wind energy utilization rate is lowered. How to improve the wind energy utilization rate of the resistance wind turbine is an important issue to

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