Results 51 to 60 of about 5,627 (140)

Correlation between stick-slip frictional sliding and charge transfer

, 2010
A decade ago, Budakian and Putterman (Phys. Rev. Lett., {\bf 85}, 1000 (2000)) ascribed friction to the formation of bonds arising from contact charging when a gold tip of a surface force apparatus was dragged on polymethylmethacrylate surface.
A. S. Nowick, G. Ananthakrishna, G. Ananthakrishna, Jagadish Kumar, K. L. Johnson, P. R. Nayak, R. W. Hertzberg   +6 more
core   +1 more source

Lubrication background [PDF]

Surface topography, including the various physical methods of measuring surfaces, and the various lubrication regimes (hydrodynamic, elastohydrodynamic, boundary, and mixed) are discussed.
Dowson, D., Hamrock, B. J.
core   +1 more source

History of ball bearings [PDF]

The familiar precision rolling-element bearings of the twentieth century are products of exacting technology and sophisticated science. Their very effectiveness and basic simplicity of form may discourage further interest in their history and development.
Dowson, D., Hamrock, B. J.
core   +1 more source

Effects of van der Waals Interactions in the Adsorption of Isooctane and Ethanol on Fe(100) Surfaces

, 2014
Van der Waals (vdW) forces play a fundamental role in the structure and behavior of diverse systems. Thanks to development of functionals that include non-local correlation, it is possible to study the effects of vdW interactions in systems of industrial
Bedolla, Pedro O., Dörr, Nicole, Eder, Stefan J., Feldbauer, Gregor, Mohn, Peter, Redinger, Josef, Vernes, András, Wolloch, Michael   +7 more
core   +2 more sources

The role of adhesion in contact mechanics

, 2018
Adhesive [e.g. van der Waals] forces were not generally taken into account in contact mechanics until 1971, when Johnson, Kendall and Roberts (JKR) generalized Hertz' solution for an elastic sphere using an energetic argument which we now recognize to be
Barber, JR, Ciavarella, M., Joe, J., Papangelo, A.   +3 more
core  

Direct numerical simulation of the dynamics of sliding rough surfaces

, 2013
The noise generated by the friction of two rough surfaces under weak contact pressure is usually called roughness noise. The underlying vibration which produces the noise stems from numerous instantaneous shocks (in the microsecond range) between surface
Bot, Alain Le, Dang, Viet Hung, Perret-Liaudet, Joël, Scheibert, Julien   +3 more
core   +3 more sources

Elastohydrodynamic lubrication theory [PDF]

The isothermal elastohydrodynamic lubrication (EHL) of a point contact was analyzed numerically by simultaneously solving the elasticity and Reynolds equations.
Dowson, D., Hamrock, B. J.
core   +1 more source

Elastohydrodynamics of elliptical contacts for materials of low elastic modulus [PDF]

The influence of the ellipticity parameter k and the dimensionless speed U, load W, and materials G parameters on minimum film thickness for materials of low elastic modulus was investigated.
Dowson, D., Hamrock, B. J.
core   +1 more source

Elastic-plastic Contact of a Deformable Sphere Against a Rigid Flat for Varying Material Properties Under Full Stick Contact Condition [PDF]

, 2011
The present study considers finite element based contact analysis of an elastic-plastic axisymmetric hemisphere using ANSYS to study the effect of material properties under full stick contact condition.
B. Chatterjee, P. Sahoo
core  

Basic lubrication equations [PDF]

Lubricants, usually Newtonian fluids, are assumed to experience laminar flow. The basic equations used to describe the flow are the Navier-Stokes equation of motion.
Dowson, D., Hamrock, B. J.
core   +1 more source