Results 31 to 40 of about 281,705 (334)

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

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

Static and sliding contact of rough surfaces: effect of asperity-scale properties and long-range elastic interactions [PDF]

, 2018
Friction in static and sliding contact of rough surfaces is important in numerous physical phenomena. We seek to understand macroscopically observed static and sliding contact behavior as the collective response of a large number of microscopic ...
Bhattacharya, Kaushik, Hulikal, Srivatsan, Lapusta, Nadia   +2 more
core   +2 more sources

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

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

Static and Dry Friction due to Multiscale Surface Roughness

, 2008
It is shown on the basis of scaling arguments that a disordered interface between two elastic solids will quite generally exhibit static and "dry friction" (i.e., kinetic friction which does not vanish as the sliding velocity approaches zero), because of
C. Grossiord, C. Kittel, G. A. Tomlinson, G. C. Spencer, J. B. Sokoloff, J. Feder, J.-M. Martin, J.-M. Martin, K. L. Johnson, M. Brillouin, M. H. Muser, M. Hirano, N. W. Ashcroft, P. Lemoine, S. Aubry   +14 more
core   +1 more source

Static friction at fractal interfaces [PDF]

Tribology International, 2016
Tribological phenomena are governed by combined effects of material properties, topology and surface-chemistry. We study the interplay of multiscale surface structures with molecular-scale interactions towards interpreting static frictional interactions at fractal interfaces.
Hanaor, Dorian, Gan, Yixiang, Einav, Itai   +2 more
openaire   +2 more sources

Modeling Method Analysis of the Friction Torque for High Speed Spindle Bearing

MATEC Web of Conferences, 2018
The friction torque inside the high-speed spindle bearing determines the performance of the friction, wear, heat, temperature rise and life of the bearing.
Li Songsheng, Chen Huihang, Ding Haibing, Zhang Guoye, Shao Juan   +4 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source