Results 31 to 40 of about 285,969 (330)

Friction anisotropy at Ni(100)/(100) interfaces: Molecular dynamics studies [PDF]

, 2002
The friction of surfaces moving relative to each other must derive from the atomic interaction at interfaces. However, recent experiments bring into question the fundamental understanding of this phenomenon.
Cheng, Yang-Tse, Goddard, William A., III, Qi, Yue, Çağin, Tahir   +3 more
core   +1 more source

Transition from Static to Dynamic Friction in an Array of Frictional Disks [PDF]

Physical Review Letters, 2020
The nature of an instability that controls the transition from static to dynamical friction is studied in the the context of an array of frictional disks that are pressed from above on a substrate. In this case the forces are all explicit and Newtonian dynamics can be employed without any phenomenological assumptions.
Charan, Harish, Chattoraj, Joyjit, Pica Ciamarra, Massimo, Procaccia, Itamar   +3 more
openaire   +4 more sources

Aging of the frictional properties induced by temperature variations [PDF]

, 2010
The dry frictional contact between two solid surfaces is well-known to obey Coulomb friction laws. In particular, the static friction force resisting the relative lateral (tangential) motion of solid surfaces, initially at rest, is known to be ...
Bertin, Eric, Géminard, Jean-Christophe
core   +6 more sources

Rheophysics of dense granular materials : Discrete simulation of plane shear flows [PDF]

, 2005
We study the steady plane shear flow of a dense assembly of frictional, inelastic disks using discrete simulation and prescribing the pressure and the shear rate.
B. Cambou, C. Josserand, C. S. Campbell, D. M. Hanes, D. M. Wood, F. da Cruz, F. da Cruz, F. Radjai, F. Radjai, François Chevoir, Frédéric da Cruz, G. D. R. Midi, J. Christoffersen, J. D. Dent, J. P. Hansen, J. Rajchenbach, J.-J. Moreau, J.-N. Roux, Jean-Noël Roux, K. Craig, K. L. Johnson, L. Bocquet, M. P. Allen, Michaël Prochnow, N. Kruyt, O. Pouliquen, P. A. Cundall, P. A. Vermeer, P. G. Rognon, P. Mills, R. Jackson, R. Nedderman, Sacha Emam   +32 more
core   +2 more sources

Development of the high precision measurement device of static friction characteristics between surfaces at the fixed coupling section

Nihon Kikai Gakkai ronbunshu, 2019
Mechanical systems have many joints within. It is well known that the parameters such as contact stiffness, static friction coefficient, kinetic friction coefficient and attenuation coefficient affect static, kinetic, thermal and motion characteristic of
Fumihiko INAGAKI, Noboru MORITA, Hirofumi HIDAI, Souta MATSUSAKA, Tatsuo OHMORI, Shinji SHIMIZU, Akira CHIBA, Yuichiro MATSUMOTO   +7 more
doaj   +1 more source

The stress transmission universality classes of periodic granular arrays [PDF]

, 2001
The transmission of stress is analysed for static periodic arrays of rigid grains, with perfect and zero friction. For minimal coordination number (which is sensitive to friction, sphericity and dimensionality), the stress distribution is soluble without
Ball, Robin, Grinev, D. V.
core   +3 more sources

Measurement Method of Static Friction by a Piezoelectric Impact Drive Mechanism

Tribology Online, 2008
The coefficient of static friction is one of the basic factors of actuator performance; it influences the operational characteristics of actuators. In this present study we focus on the dependence of the coefficient of static friction on the time of ...
Atsushi Okuno, Nozomu Araki, Yasuo Konishi, Hiroyuki Ishigaki   +3 more
doaj   +1 more source

Ejection Forces and Friction Coefficients from Injection Molding Experiments Using Rapid Tooling Inserts [PDF]

, 2004
Experiments have been performed with injection mold inserts made using solid freeform fabrication processes in an effort to further study such applications for economic production of small quantities of parts.
Carpenter, B., Cooper, K., Kinsella, M. E., Lilly, B.   +3 more
core   +1 more source

Calibration and analysis of discrete element simulation parameters of Chinese cabbage seeds.

PLoS ONE, 2022
ObjectiveTo improve the accuracy of parameters used in discrete element simulation test of Chinese cabbage seeds harvesting process.MethodsFirstly, the key physical parameters of Chinese cabbage seeds were measured. According to the results, the discrete
Shengsheng Wang, Lu Mengqing, Xingyi Liu, Jiangtao Ji, Pan Chen   +4 more
doaj   +1 more source

Static Friction Phenomena in Granular Materials: Coulomb Law vs. Particle Geometry

, 1993
The static as well as the dynamic behaviour of granular material are determined by dynamic {\it and} static friction. There are well known methods to include static friction in molecular dynamics simulations using scarcely understood forces.
A. Drescher, A. Rosato, A. Rosato, B. J. Briscoe, B. McNamara, C. A. Coulomb, C. Laroche, C. Tang, D. C. Hong, D. Dhar, E. Clement, E. N. Miranda, F. Dinkelacker, G. A. Held, G. Ristow, G. W. Baxter, G. W. Baxter, G. W. Baxter, H. Caram, H. J. Herrmann, H. M. Jaeger, H. M. Jaeger, H. M. Jaeger, I. Goldhirsch, J. A. C. Gallas, J. A. C. Gallas, J. C. Williams, J. Rajchenbach, J. Rajchenbach, J. Walker, K. L. Schick, K. Wiesenfeld, L. P. Kadanoff, M. Bretz, M. Faraday, M. P. Allen, O. Cutress, P. A. Thompson, P. Bak, P. Cundall, P. Devillard, P. Evesque, P. Evesque, P. Evesque, P. K. Haff, R. Jullien, S. B. Savage, S. B. Savage, S. R. Nagel, S. Soko l owski, T. G. Drake, T. G. Drake, T. Hwa, T. Pöschel, Thorsten Pöschel, Volkhard Buchholtz, Y. H. Taguchi, Y. Tsuji   +57 more
core   +2 more sources