Surface roughness effects on non-Newtonian MHD non-parallel squeeze film bearing

Abstract

PurposeThe purpose of this paper is to examine the effect of surface roughness on the magneto-hydrodynamic (MHD) non-parallel squeeze film lubrication using non-Newtonian lubricant.Design/methodology/approachBased on the MHD thin film lubrication theory and the Stokes theory and homogenization method, the homogenized MHD Reynolds equation is derived considering the squeezing effect.FindingsIt is found that the obtained results indicate that the interaction among non-Newtonian, MHD and surface roughness influences is significant.Originality/valueThis study is original which compares the dimensionless load capacity and dimensionless response time among transverse, longitudinal and, for the first time, anisotropic surface roughness types under magneto-hydrodynamic non-Newtonian non-parallel squeeze film lubrication.Peer reviewThe peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2020-0071/