Results 201 to 210 of about 352,293 (253)
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Effects of Temperature and Sliding Rate on Frictional Strength of Granite
pure and applied geophysics, 1986Layers of artificial granite gouge have been deformed on saw-cut granite surfaces inclined 30° to the sample axes. Samples were deformed at a constant confining pressure of 250 MPa and temperatures of 22 to 845 °C. The velocity dependence of the steady-state coefficient of friction (μ ss) was determined by comparing sliding strengths at different ...
D. A. Lockner, R. Summers, J. D. Byerlee
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Frictional properties of elastomers at increased sliding rates
Wear, 1975Abstract The paper proposes a method for estimating temperatures on the friction surface of elastomers at increased sliding rates on the assumption that over a wide range of rates and temperatures the friction conditions are determined by their relaxation characteristics, provided the mechano-chemical processes do not exert any significant effect ...
G.V. Vinogradov +3 more
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Journal of the Institution of Electrical Engineers, 1940
A new type of meter is suggested to replace the existing maximum-demand indicators. The device works in the same way as a watt-hour meter, but integrates the relative values of the units as a function of the demand, instead of registering only the quantities of units consumed. Hence the meter reading does not indicate kilowatt-hours, but a figure which
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A new type of meter is suggested to replace the existing maximum-demand indicators. The device works in the same way as a watt-hour meter, but integrates the relative values of the units as a function of the demand, instead of registering only the quantities of units consumed. Hence the meter reading does not indicate kilowatt-hours, but a figure which
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An approach to discrete-time sliding mode control with variable convergence rate to sliding surface
2008 SICE Annual Conference, 2008In this paper, we propose a new design method of the convergence rate in discrete-time sliding mode control. The design of a sliding surface is implemented by Ackermannpsilas formula in discrete-time domain. The discrete-time sliding mode control based on Luenburger observer is used for the controller.
Choong Woo Lee, Chung Choo Chung
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A finite element formulation of thermomechanical rate-dependent frictional sliding
International Journal for Numerical Methods in Engineering, 1997A combined theoretical and numerical approach is taken to consider the dynamic behaviour and the thermomechanical interactions of systems in which friction has an important role. Emphasis is placed on the proper numerical description of fully coupled thermomechanical response on frictional interfaces. From a theoretical standpoint, the first and second
Oancea, V. G., Laursen, T. A.
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Velocity and Strain-Rate Profiles in Materials Subjected to Unlubricated Sliding
Physical Review Letters, 2005This Letter focuses on the plastic response of a material, treated as a fluid, when subjected to sliding interactions. The analysis couples momentum conservation with material flow laws to predict velocity and strain-rate profiles that develop during sliding. The profiles depend on the strain-rate sensitivity. The spatial extent of the deformed zone is
S, Karthikeyan, H J, Kim, D A, Rigney
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Steady and transient sliding under rate-and-state friction
Journal of the Mechanics and Physics of Solids, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Putelat, Thibaut, Dawes, Jonathan H.P.
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Grain boundary sliding, and the effects of particles on its rate
Metallurgical Transactions, 1972Grain boundary sliding can be conveniently studied by loading helical springs wound of wire with a “bamboo” structure. Such tests on pure silver coils show that identically-stressed boundaries slide at widely different rates, and that the sliding rate in any one boundary is very anisotropic. A grain boundary precipitate of hard particles (SiO2 or A12O3)
R. Raj, M. F. Ashby
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Temperature and Strain Rate Effects in Grain Boundary Sliding
MRS Proceedings, 1995AbstractWe have performed total energy density functional theory calculations to investigate the sliding process at the ∑ = 5 (001) twist grain boundary in germanium. The accurate quantum mechanical description of the interatomic bonding provides valuable insights into the mechanisms of bond breaking and remaking that occur during the sliding.In this ...
Molteni, C +3 more
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