Results 211 to 220 of about 10,082 (264)

Numerical investigation on the tunneling efficiency of TBM considering the argillization effect based on the energy evolution. [PDF]

Sci Rep
Lu M, Ruan H, Liu B, Gao H, Chen H, Zeng Y, Bao S, Chen X, Wan X, Tong B, Li B.   +10 more
europepmc   +1 more source

A comprehensive review on rubber wear modeling with focus on tire applications. [PDF]

iScience
Maglione R, Farroni F, Genovese A, Napolitano Dell'Annunziata G, Timpone F, Sakhnevych A.   +5 more
europepmc   +1 more source

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Rolling friction on a granular medium

Physical Review E, 2009
We present experimental results for the rolling of spheres on a granular bed. We use two sets of glass and steel spheres with varying diameters and a high-speed camera to follow the motion of the spheres. Despite the complex phenomena occurring during the rolling, the results show a friction coefficient nearly independent of the velocity (0.45-0.5 for ...
Fabio Vittorio, De Blasio, May-Britt, Saeter   +1 more
openaire   +2 more sources

Theory of Rolling Friction for Spheres

Journal of Applied Physics, 1959
A theory of rolling friction featuring the importance of elastic hysteresis losses is presented. A simple model of retarded elasticity is chosen to represent the physical properties of the material. A prediction resulting from the theory is that the coefficient of friction for a relatively hard sphere rolling on a softer base material should vary with ...
Flom, D. G., Bueche, A. M.
openaire   +2 more sources

Forms of Static Friction, Sliding Friction and Rolling Friction

World Tribology Congress III, Volume 1, 2005
Although, it seems that the concepts of static friction, sliding friction and rolling friction are common knowledges, their real sources are ironically not so clear. Inappropriate descriptions of them may have hampered the theoretical analyses and calculations of the frictions and deterred their applications in real world.
Y. Xu, K. L. Yung
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Study of rolling friction — behaviour of the small displacement of starting rolling friction

Wear, 1983
Abstract In this study the detailed behaviour of the starting rolling displacement at the contact of a flat steel surface with a steel roller is investigated. In addition, the behaviour of the hysteresis loop formed in the region of the starting rolling distance is experimentally examined by varying the hardness of the rolling contact surface and the
Tadayoshi Koizumi, Hiroshi Shibazaki, Tadashi Nishio, Nobuhiko Nishiwaki   +3 more
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Rolling Friction of Metals

Japanese Journal of Applied Physics, 1969
Theoretical equations of rolling friction coefficient of metal by the rigid pendulum method were obtained as a function of dynamic mechanical properties of metal for the case of cylinder and sphere as follows, λ c =3k/2π(3/2)1/3tan δ(W/E 1(ω))1/3 r -2/3 ...
Kikuwo Minato, Chitoshi Nakafuku, Tetuo Takemura   +2 more
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Mechanoactivation in friction and the laws of sliding and rolling friction

Journal of Friction and Wear, 2011
The concepts of the collision theory and the activated complex theory, widely known in chemical kinetics and adapted to the description of contact between asperities on rubbing surfaces, are used to derive the expressions of Amontons’ law for sliding friction and Coulomb’s law for rolling friction.
V. I. Kolesnikov, S. B. Bulgarevich, M. V. Boiko, V. A. Feizova   +3 more
openaire   +1 more source

Friction in power rolling

Soviet Powder Metallurgy and Metal Ceramics, 1982
Friction in the rolling of powders should be analyzed in conjunction with their compressibility. The mechanical component of the coefficient of friction (roll surface roughness) at the interface between a roll and a powder being densified (zone II) exerts the strongest influence on the gauge indicators of the compacted strip.
openaire   +1 more source