... )]. c Reference [( 30 )]. 27 12 2010 02 09 2011 19 10 2011 19 10 2011 amorphous semiconductors carbon cyclotron resonance finite element analysis scanning electron microscopy shear strength silicon compounds sliding friction wear X-ray chemical analysis...

... for the slider bearing. 18 12 2008 12 09 2009 10 11 2009 10 11 2009 machine bearings shear strength slip slider bearing journal bearing partial slip surface single-groove pressure shear stress The classical Reynolds equation is based on the assumption of no slip...

... lubricants oils pH rolling shear strength viscosity water 2010 American Society of Mechanical Engineers ...

... processing conditions. 27 04 2009 25 08 2009 09 11 2009 09 11 2009 aluminium alloys billets dies (machine tools) extrusion finite element analysis friction lubricating oils shear strength surface roughness tip test friction measurement tip distance backward...

...Yeau-Ren Jeng; Shin-Rung Peng The friction coefficient ( μ ) of a contact surface with elliptical asperities is examined at various values of the plasticity index ( ψ ) , the effective radius ratio ( γ ) , the shear-strength-pressure proportionality constant ( c ) , and the dimensionless limiting...

... rolling contact fatigue bearing life contact stresses elastic moduli fatigue finite element analysis Gaussian distribution grain size rolling bearings shear strength Weibull distribution 19 06 2008 30 09 2008 04 03 2009 2009 American Society of Mechanical Engineers ...

...W. Wayne Chen; Q. Jane Wang The relative motion between two surfaces under a normal load is impeded by friction. Interfacial junctions are formed between surfaces of asperities, and sliding inception occurs when shear tractions in the entire contact area reach the shear strength of the weaker...

.... ball bearings elasticity friction lubricants polymers rolling bearings shear strength slip torque rolling bearing ball bearing polymer lubricant running torque resistance friction In our previous paper ( 14 ), we studied the effects of the enclosure form of polymer lubricant...

... lung pneumodynamics shear deformation shear strength surface roughness lubrication theory elastohydrodynamic lubrication pleural space In the pleural, pericardial, and peritoneal cavities, organs slide against the body wall, their delicate mesothelial surfaces lubricated...

... with low shear strength. The dual lubrication mechanisms make boron-nitride-silicone lubricants suitable for a wide range of aluminum forging temperatures. To ensure proper flow of material at the tool-workpiece interface, with less propensity for galling and tool wear, good lubrication is essential...

... is less than 1 ∕ 20 of the contact area diameter. The mean tangential stress over the contact interface at sliding inception was found to be slightly below the shear strength of the sphere material, justifying the full stick contact condition assumed in Ref. 6 for dry contact. Two distinct...

... are similar to those presented by Craig et al. ( 8 39 ) and Yu and Tichy ( 14 ). 01 04 2007 25 05 2007 discs (structures) friction granular materials lubrication shear strength surface roughness granular lubrication binary collision kinetic theory lift dilation slip...

... be calculated by summing up the two components, i.e., the boundary friction contributed by contacting asperities and the shear stress in hydrodynamic regions. The frictions from asperity contact were determined in terms of a limiting shear stress or shear strength of boundary films while the fluid shear stress...

... contacts and elastic–fully plastic deformation models. Numerical integration yields solutions for the normal and friction forces in terms of fractal parameters, elastic–plastic material properties, and interfacial shear strength. The variation of the static coefficient of friction with normal load...

... the oil film pressure and the slip velocity. It is found that wall slip causes the oil film thickness to decrease dramatically. The initial limiting shear strength and proportional constant of the viscoplastic lubricant have a larger effect on the oil film pressure than the rolling speed...

... of friction. These components of the friction force depend on the relevant real area of contact (dependent on roughness and mechanical properties) and relevant shear strength during sliding. A model of rough surface topography based on an empirical power rule for scale dependence of roughness and contact...

... September 2002 13 March 2003 13 01 2004 carbon fibre reinforced plastics wear shear strength compressive strength composite material interfaces friction With numerous possible material combinations, FRP composites provide nearly unlimited possibilities for optimizing...

... received by the Tribology Division August 1, 2002; revised manuscript received February 4, 2003. Associate Editor: T. C. Ovaert. 01 August 2002 04 February 2003 25 09 2003 sliding friction Young's modulus shear strength simulation mechanical contact rough surfaces surface...

... 31 05 2002 film flow rheology lubrication nanotechnology shear strength thickness measurement mechanical contact For Newtonian lubricants, the linear proportionality between shear stress and shear strain rate always maintains an oil film between the lubricated surfaces...

... that lump growth can be decreased and, under certain conditions prevented, by a higher (surface) hardness of the workpiece, a lower roughness of the tool surface, a lower nominal contact pressure, and a lower shear strength of the interface. These results are in general agreement with results obtained from...