A study of misaligned compliant journal bearings lubricated by non-Newtonian fluid considering surface roughness. (January 2023)

• Record Type: Journal Article
• Authors: Zhu, Shaoyu; Zhang, Xiangjun; Sun, Jun; Wang, Dagang
• Is Part Of: Tribology international. Volume 179(2023)
• Publication Date: 2023-01
• Subjects: Non-Newtonian lubricants -- Journal misalignment -- Liner deformation -- Surface roughness; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2022.108138
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: To study the static behavior of misaligned journal bearings under heavy loads using a non-Newtonian lubricant (pseudoplastic fluid, the flow behavior obeys a power-law relationship). And the generalized average Reynolds equation for rough journal bearing under pseudoplastic lubricant flow is derived. The establishment method of the model equation adopts the average flow method of Patir and Cheng. The numerical solution of bearing performance parameters applies the finite difference method and the successive over-relaxation method. And surface roughness can partially offset the effects of liner elastic deformation and lubricant shear thinning. The generalized average Reynolds equation derived in this paper is not only used in the research of hydrodynamic lubrication but also can be used in the research of mixed lubrication.