Results 21 to 30 of about 281,766 (191)

Static friction between rigid fractal surfaces [PDF]

Physical Review E, 2015
Using spheropolygon-based simulations and contact slope analysis, we investigate the effects of surface topography and atomic scale friction on the macroscopically observed friction between rigid blocks with fractal surface structures. From our mathematical derivation, the angle of macroscopic friction is the result of the sum of the angle of atomic ...
Alonso-Marroquin, Fernando, Huang, Pengyu, Hanaor, Dorian A. H., Flores-Johnson, E. A., Proust, Gwenaelle, Gan, Yixiang, Shen, Luming   +6 more
openaire   +3 more sources

The Statistical Characteristics of Static Friction [PDF]

International Journal of Applied Mechanics, 2018
Friction is one of the fundamental issues in physics, mechanics and material science with many practical applications. However, the understanding of macroscopic friction phenomena from microscopic aspect is still on the way. In this paper, molecular dynamics simulations are performed to investigate the static friction between two planar crystal ...
Jian Wang, Gangfeng Wang, Weike Yuan, Jianjun Bian   +3 more
openaire   +2 more sources

The Stress Transmission Universality Classes of Periodic Granular Arrays [PDF]

, 2000
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
Brockbank, Cates, Coppersmith, D.V. Grinev, Edwards, Edwards, Ennis, Farr, Guyon, Jaeger, Landau, Liu, Mehta (Ed.), Miller, Mueth, Nedderman, Ottewill, R.C. Ball, Radjai, Sokolovskii, Wittmer, Wood   +21 more
core   +3 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

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

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

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

Some Improvements in Elastoplastic Friction Compensator

SICE Journal of Control, Measurement, and System Integration, 2017
For robotic joints with compliant transmissions, Mahvash and Okamura have proposed a friction compensator based on an elastoplastic friction model. One drawback of the compensator is that the compensator continues producing non-zero output force in the ...
Masayoshi Iwatani, Ryo Kikuuwe
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

Simulations of the Static Friction Due to Adsorbed Molecules

, 2001
The static friction between crystalline surfaces separated by a molecularly thin layer of adsorbed molecules is calculated using molecular dynamics simulations.
A. Berman, A. Liebsch, A. Volmer, A.L. Demirel, A.R.C. Baljon, B. Smit, B.J. Briscoe, B.J. Briscoe, B.J. Briscoe, B.N.J. Persson, B.N.J. Persson, C. Bennemann, C. Caroli, C.F. McFadden, D. Dowson, E. Manias, E. Rabinowicz, E.D. Smith, F.P. Bowden, G. Grüner, G. He, G. He, G.M. McClelland, G.S. Grest, Gang He, H. Czichos, I.M. Ward, J. Gao, J. Gao, J. Gao, J. Krim, J. Krim, J. Krim, J. P. Hansen, J.A. Greenwood, J.A. Harrison, J.A. Harrison, J.A. Harrison, J.H. Dieterich, J.M. Martin, J.S. Ko, K. Kremer, K. Shinjo, M. Cieplak, M. Godet, M. Hirano, M. Hirano, M. Hirano, M. Hirano, M. Weiss, M.H. Müser, M.H. Müser, M.J. Stevens, M.L. Gee, M.O. Robbins, M.O. Robbins, M.P. Allen, M.R. Sørensen, Mark O. Robbins, P. Bak, P. Berthoud, P.A. Thompson, P.A. Thompson, R.W. Carpick, S. Aubry, S. Granick, Y. Berthier, Y.I. Frenkel   +67 more
core   +1 more source