Results 31 to 40 of about 346,020 (254)

friction coefficient [PDF]

, 2009
Citation: 'friction coefficient' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.F02529 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Forming Parameters on Friction during Single Point Incremental Forming

Advances in Materials Science and Engineering, 2022
Friction in the single point incremental forming (SPIF) process is the main factor affecting the surface quality and forming performance of the workpiece.
Qing Xu, Zimeng Yao
doaj   +1 more source

Experiment research on friction coefficient between a steel plate and rail in transient sliding thermal contact through a pendulum

Results in Physics, 2018
The main goal of this article is to study the friction coefficient of wheel/rail transient sliding thermal contact through a pendulum. A new method is firstly established to analyze the friction coefficient.
Yunpeng Wei, Yaping Wu, Kun Chen, Anyuan Sun   +3 more
doaj   +1 more source

Quantum “contact” friction: The contribution of kinetic friction coefficient from thermal fluctuations

Friction, 2023
A thermal model of kinetic friction is assigned to a classical loaded particle moving on a fluctuating smooth surface. A sinusoidal wave resembles surface fluctuations with a relaxation time. The Hamiltonian is approximated to the mean energy of the wave
Rasoul Kheiri
doaj   +1 more source

Rolling friction of a viscous sphere on a hard plane

, 1998
A first-principle continuum-mechanics expression for the rolling friction coefficient is obtained for the rolling motion of a viscoelastic sphere on a hard plane.
, Barwell F. T., Carter F. W., Czichos H., Dowson D., Drutowski R. C., Fuller K. N. G., Heathcote H. L., Hertz H., Huang R. Q., Krause H., Landau L. D., Li Y. F., Prashad H., Rabinowicz E., Reynolds O., Shpenkov G. P., Szeri A. Z., Tabor D., Vince S., Zum Gahr K. R.   +20 more
core   +1 more source

Effect of temperature on the frictional behavior of 18CrNiMo7-6 under lubrication

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2022
In the process of gear meshing, the tooth surface will produce friction heat, which will in turn act on the friction coefficient. The temperature does not directly affect the friction coefficient of the gear tooth surface, but indirectly through ...
Fei LIU, Yonghong CHEN, Heping XIE, Chenyang DOU, Bingkui CHEN   +4 more
doaj   +1 more source

Coarse-grained model for spring friction study of micron-scale iron by smoothed particle hydrodynamics

, 2018
The paper constructs a coarse-grained model to investigate dry sliding friction of the body-centered-cubic Fe micron-scale system by smoothed particle hydrodynamics simulations and examines influences of the spring force on the characters of friction ...
Fujii, Shuji, Sugimura, Natsuko, Van Sang, Le, Washizu, Hitoshi, Yano, Akihiko   +4 more
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Attractiveness of periodic orbits in parametrically forced systemswith time-increasing friction [PDF]

, 2012
We consider dissipative one-dimensional systems subject to a periodic force and study numerically how a time-varying friction affects the dynamics. As a model system, particularly suited for numerical analysis, we investigate the driven cubic oscillator ...
Birkhoff G. D., Chow S. N., Gradshteyn I. S., Guckenheimer J., Guido Gentile, Jonathan Deane, Krasovsky N. N., Laskar J., Magnus W., Michele Bartuccelli, Neishtadt A. I., Palis J., Plummer C. C., Press W. H., Pritchard M. E., Robuchon G., Walpole R. E., Woolfson M. M.   +17 more
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Friction Coefficient Compensation Control in Synchronizer Synchronization Process for Transmission

Applied Sciences, 2019
In the synchronization process of a synchronizer, the friction coefficient of the friction cone is changed because of friction heat. In this paper, the influence of a changing friction coefficient on shift quality was analyzed.
Hao Yan, Zhaoping Xu, Juntang Yuan, Meiyan Liu, Wenqing Ge   +4 more
doaj   +1 more source

Density fluctuations from warm inflation

, 2009
Thermal fluctuations provide the main source of large scale density perturbations in warm inflationary models of the early universe. For the first time, general results are obtained for the power spectrum in the case when the friction coefficient in the ...
A. Berera, A. Einstein, A. Erdelyi, A.R. Liddle, Chris Graham, D.H. Lyth, I.G. Moss, I.G. Moss, I.G. Moss, I.G. Moss, Ian G Moss, J.-C. Hwang, L.M.H. Hall, L.V. Keldysh, L.V. Keldysh, S. Weinberg   +15 more
core   +1 more source