Results 31 to 40 of about 1,067,690 (293)

METHOD OF DIMENSIONALITY REDUCTION IN CONTACT MECHANICS AND FRICTION: A USER'S HANDBOOK. II. POWER-LAW GRADED MATERIALS

Facta Universitatis. Series: Mechanical Engineering, 2016
Until recently, the only way of solving contact problems was to applythree-dimensional contact theories. However, this presupposes higher mathematical and numerical knowledge, which usually only research groups possess.
Markus Hess, Valentin L. Popov
doaj   +1 more source

Universal behavior of internal friction in glasses below T : anharmonicity vs relaxation [PDF]

, 2006
Comparison of the internal friction at hypersonic frequencies between a few K and the glass transition temperature Tg for various glasses brings out general features. At low temperature, internal friction is only weakly dependent on the material. At high
C. A. Angell, C. Levelut, D. A. Parshin, D. A. Parshin, H. J. Maris, J. Pelous, J. Pelous, J. Pelous, J. Pelous, J.-F. Berret, J.-Y. Duquesne, M. Cutroni, N. P. Bansal, R. Vacher, R. Vacher, R. Vacher, S. Hunklinger, S. R. Elliott, W. A. Phillips   +18 more
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Quantum Friction [PDF]

Chinese Physics Letters, 2012
The Brownian motion of a light quantum particle in a heavy classical gas is theoretically described and a new expression for the friction coefficient is obtained for arbitrary temperature. At zero temperature it equals to the de Broglie momentum of the mean free path divided by the mean free path.
openaire   +2 more sources

Friction dependence of shallow granular flows from discrete particle simulations [PDF]

, 2011
A shallow-layer model for granular flows is completed with a closure relation for the macroscopic bed friction or basal roughness obtained from micro-scale discrete particle simulations of steady flows. We systematically vary the bed friction by changing
Bokhove, Onno, Luding, Stefan, Thornton, Anthony, Weinhart, Thomas   +3 more
core   +8 more sources

Investigations on interface microstructure and strength properties of dissimilar tin bronze/superalloy diffusion bonded joints

Science and Engineering of Composite Materials, 2015
Diffusion bonding of dissimilar metals QSn4-3 and GH34 by using a QSn6.5-0.1 interlayer has been conducted in this study. The purpose of the study is to investigate the interface microstructure and strength of the joints, and to demonstrate the ...
Li Peng, Li Jinglong, Xiong Jiangtao, Zhang Fusheng, Liang Li   +4 more
doaj   +1 more source

Resonant photon tunneling enhancement of the van der Waals friction [PDF]

, 2003
We study the van der Waals friction between two flat metal surfaces in relative motion. For good conductors we find that normal relative motion gives a much larger friction than for parallel relative motion.
A. I. Volokitin, A. I. Volokitin, A. I. Volokitin, B. N. J. Persson, E. D. Palik, I. E. Dzyaloshinskii, N. Arkani-Hamed, T. J. Gramila   +7 more
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Experimental Verification of the Boundary Element Method for Adhesive Contacts of a Coated Elastic Half-Space

Lubricants, 2023
We consider analytical, numerical, and experimental approaches developed to describe the mechanical contact between a rigid indenter and an elastic half-space coated with an elastic layer.
Iakov A. Lyashenko, Valentin L. Popov, Vadym Borysiuk   +2 more
doaj   +1 more source

Effect of surface roughness on friction behaviour of steel under boundary lubrication [PDF]

, 2014
The friction behaviour of grinded and polished surfaces was evaluated by using a reciprocal sliding tester under lubrication with PAO, PAO + ZnDTP and PAO + ZnDTP + MoDTC.
Atherton, MA, Sasaki, C, Sasaki, S, Stolarski, T, Tsuboi, R, Yamaguchi, K   +5 more
core   +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
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Topological complexity of frictional interfaces: friction networks [PDF]

Nonlinear Processes in Geophysics, 2012
Abstract. Through research conducted in this study, a network approach to the correlation patterns of void spaces in rough fractures (crack type II) was developed. We characterized friction networks with several networks characteristics. The correlation among network properties with the fracture permeability is the result of friction networks.
H. O. Ghaffari, R. P. Young
openaire   +4 more sources