Effect of Surface Asperity on Elastohydrodynamic Lubrication |
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a(ph a/4 and height a/4 Asperity Height ABS X3-XH asperity approaches asperity located asperity moves CALL DHD CALL INTEG center film thickness center pressure coefficient contact region contact surface CONVERGED SOLUTION cylinder deformation formula DEN(K density elastohydrodynamic lubrication Exponential Lubricant Model Film Thickness 1.0 film thickness profiles FORMAT 5H governing equation HH(K hydrodynamic lubrication inlet pressure integral K=KA K=KI K=KI,KO load lower cylinder Lubricant Model G matrix middle region NEWTON-RAPHSON METHOD obtained Pj,m PK,m PKA=P(KA Poisson's ratio present study Pressure and film pressure distribution Pressure Film Thickness pressure peak pressure profile PS(K psi Asperity Width pure rolling rolling and sliding S4 DIMENSION squeezing action steady state pressure Straight Exponential Lubricant SUBROUTINE system equations transient U₁ U₂ upper cylinder viscosity Young's modulus ΚΑ ӘР дх ЭР Աշ