Results 41 to 50 of about 385,462 (279)

Experimental Study of Effects of the Third Medium on the Maximum Friction Coefficient between Wheel and Rail for High-Speed Trains

Shock and Vibration, 2021
The changes of the friction coefficient between wheel and rail affect the wheel-rail adhesion characteristics of high-speed trains. The adhesion state in the wheel-rail contact area could be distinguished by the maximum friction coefficient between wheel
He Ma, Yan Niu, Xiaochun Zou, Jun Zhang
doaj   +1 more source

Effect of potato contact parameters on seed metering performance using discrete element method

Spanish Journal of Agricultural Research, 2022
Aim of study: To study the effect of potato surface with or without sandy loam soil on seed metering performance, we investigated the motion behaviour of the potato seed particles during the seed metering process using a self-designed across-bridge ...
Linrong Shi, Xiaoping Yang, Wuyun Zhao, Bugong Sun, Guanping Wang, Wei Sun   +5 more
doaj   +1 more source

Methods of calculation of a friction coefficient: Application to the nanotubes

, 2003
In this work we develop theoretical and numerical methods of calculation of a dynamic friction coefficient. The theoretical method is based on an adiabatic approximation which allows us to express the dynamic friction coefficient in terms of the time ...
H. Goldstein, J. Servantie, J. P. Lu, M. V. Berry, P. Gaspard   +4 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Calibration of discrete element simulation parameters for different kinds of rice grains

Shipin yu jixie
ObjectiveTo provide a theoretical reference for the optimal design of the polisher structure by comparing the differences in the contact parameters of different kinds of rice.MethodsUsing bench test and simulation test, and combining with MATLAB software
ZHU Linfeng, LIU Xiaopeng, ZHANG Yonglin, SONG Shaoyun, YIN Qiang, CAO Meili   +5 more
doaj   +1 more source

Effects of Microscale Texture on the Tribological Behavior of Paper-Based Friction Materials for a Wet Clutch

Tribology Online, 2015
Paper-based friction materials used for wet clutches in automatic transmissions require various tribological functions such as a high and stable friction coefficient, good μ-V (friction coefficient-sliding velocity) characteristics, heat resistance ...
Shintaro Yagi, Nobuyuki Katayama, Hiroaki Hasegawa, Hiroshi Matsushita, Shin-ichiro Okihara   +4 more
doaj   +1 more source

Friction analysis of kinetic schemes: the friction coefficient [PDF]

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1995
Friction analysis is proposed as the application of general control analysis to single enzymes to describe the control of elementary kinetic steps on the overall catalytic rate. For each transition, a friction coefficient is defined that measures the sensitivity of the turnover rate to the free energy of the transition state complex of the transition ...
openaire   +3 more sources

Force autocorrelation function in linear response theory and the origin of friction

, 2008
Vanishing of the equilibrium Green-Kubo fluctuation expression for the friction coefficient of a massive particle moving in a finite-volume liquid is usually interpreted as an unphysical consequence of the finite volume. Here I show that it is a physical
Petravic, Janka
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Mobility and stochastic resonance in spatially inhomogeneous system [PDF]

, 1999
The mobility of an overdamped particle, in a periodic potential tilted by a constant external field and moving in a medium with periodic friction coefficient is examined.
A. M. Jayannavar, A. M. Jayannavar, A. M. Jayannavar, C. M. Falco, Debasis Dan, F. Marchesoni, G. Hu, H. Gang, H. Risken, I. Dayan, J. D. Bao, J. L. Cabrera, J. M. Casado, L. Gammaitoni, M. Büttiker, M. C. Mahato, M. C. Mahato, M. C. Mahato, M. C. Mahato, M. Gitterman, M. M. Millonas, N. G. van Kampen, R. N. Mantegna, R. Rozenfeld, Y. W. Kim   +24 more
core   +3 more sources