The size-dependent elastohydrodynamic lubrication contact of a coated half-plane with non-Newtonian fluid

• 作者: Jie SU Hongxia SONG Liaoliang KE S.M.AIZIKOVICH
• 来源期刊: 应用数学和力学（英文版）
• 年，卷（期）: 2021,（7）
• 页码范围: 915-930
• 页数: 16页
• 分类号: O373
• 语种: 英文

摘要

Based on the couple-stress theory,the elastohydrodynamic lubrication(EHL)contact is analyzed with a consideration of the size effect.The lubricant between the contact surface of a homogeneous coated half-plane and a rigid punch is supposed to be the non-Newtonian fluid.The density and viscosity of the lubricant are dependent on fluid pressure.Distributions of film thickness,in-plane stress,and fluid pressure are calculated by solving the nonlinear fluid-solid coupled equations with an iterative method.The effects of the punch radius,size parameter,coating thickness,slide/roll ratio,entraining velocity,resultant normal load,and stiffness ratio on lubricant film thickness,in-plane stress,and fluid pressure are investigated.The results demonstrate that fluid pressure and film thickness are obviously dependent on the size parameter,stiffness ratio,and coating thickness.