Abstract

Based on mixed thermal-elastohydrodynamic lubrication, the dynamic contact of ball bearings with worn band is investigated, and the film thickness, pressure, profile and interfacial temperature are analyzed. The temperature-pressure-viscoelastic equation of lubricant is constructed. The surface roughness, the elastic deformation and the worn band are included in the film thickness. The discretization method and compound iteration method are combined to solve the problem. Through numerical examples, the distribution and contour of film thickness, pressure and temperature with consideration of surface roughness and worn band are discussed, and the point contact with lower entrainment speed is found.

摘要

基于混合热弹流润滑，研究了滚珠轴承与磨损带的动态接触，分析了油膜厚度、压力、轮廓和界面温度。建立了润滑剂的温度-压力-粘弹性方程。表面粗糙度、弹性变形和磨损带都包含在膜厚中。将离散化方法和复合迭代法相结合来解决该问题。通过数值算例，讨论了考虑表面粗糙度和磨损带的薄膜厚度、压力和温度的分布和轮廓，找到了夹带速度较低的点接触。