不同坐标系下滑动轴承动特性系数计算方法的相互转换  

Mutual Conversion of Calculation Methods of Dynamic Characteristic Coefficients of Sliding Bearing in Different Coordinate Systems

作　　者：王蕴馨 马金奎[1] 陈淑江[1] 路长厚[1] 李佳 刘志颖 WANG Yunxin;MA Jinkui;CHEN Shujiang;LU Changhou;LI Jia;LIU Zhiying(Key Laboratory of High-efficiency and Clean Mechanical Manufacture,School of Mechanical Engineering,Shandong University,Jinan Shandong 250061,China)

机构地区：[1]山东大学机械工程学院,高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《润滑与密封》2021年第3期137-143,共7页Lubrication Engineering

基　　金：国家自然科学基金项目(51575318);山东省自然科学基金项目(ZR2019MEE064)。

摘　　要：为了完善滑动轴承动特性系数在不同坐标系下的计算方法及相互间的转换关系,分别建立极坐标系和直角坐标系下油膜压力的计算模型,并分析计算过程中雷诺边界条件的实现方法;给出计算扰动压力的边界条件,运用偏导数法推导扰动压力的表达式;讨论2种坐标系之间动特性系数的转换矩阵,并通过实例进行验证。结果表明,2种模型计算结果一致,说明了该方法的正确性,完善了诸多研究所依据的经典轴承理论。In order to research the calculation method of dynamic characteristic coefficients of sliding bearing and the relationship between different coordinate systems,two numerical analysis models of oil film pressure in polar coordinate system and rectangular coordinate system were established,in which the realization method of Reynolds boundary condition was presented.The formula of the perturbed pressure was derived using partial derivative method and the boundary condition was given.The transformation matrix of dynamic characteristic coefficients between two coordinate systems was discussed and verified.It is shown that the results of two models are consistent,which prove the method,thereby perfecting the classic bearing theory.

关 键 词：滑动轴承 动特性系数 偏导数法 坐标转换 边界条件 

分 类 号：TH133.31[机械工程—机械制造及自动化]