首页 | 本学科首页   官方微博 | 高级检索  
     检索      

基于Reynolds边界的滑动轴承动力学系数的计算及应用
引用本文:吕延军,虞烈,刘恒.基于Reynolds边界的滑动轴承动力学系数的计算及应用[J].摩擦学学报,2004,24(1):61-65.
作者姓名:吕延军  虞烈  刘恒
作者单位:西安交通大学,润滑理论及轴承研究所,陕西,西安,710049
基金项目:国家自然科学基金资助项目(50275116),国家"863"计划资助项目(2002AA414060).
摘    要:运用有限元方法,在不需要额外求解Reynolds方程的情况下,求解了具有Reynolds边值条件的流体润滑问题,使得同时完成动力积分过程中非线性油膜力及影响Floquet乘子求解的油膜力Jacobian矩阵的计算成为可能;运用打靶法及预估-校正和打靶法相结合的延续算法考察了轴承-转子系统的非线性不平衡响应及其随轴承设计参数改变而出现的分岔现象,实现了计算量的有效减少。

关 键 词:流体润滑  轴承-转子动力学  非线性  有限元方法  分岔
文章编号:1004-0595(2004)01-0061-05
修稿时间:2003年3月13日

Calculation of Dynamic Coefficients of a Journal Bearing Based on Reynolds Boundary and Its Application
LU Yan-jun,YU Lie,LIU Heng.Calculation of Dynamic Coefficients of a Journal Bearing Based on Reynolds Boundary and Its Application[J].Tribology,2004,24(1):61-65.
Authors:LU Yan-jun  YU Lie  LIU Heng
Abstract:An isoparametric finite element method based on eight nodal points and variational constrain approach was used to solve the fluid lubrication problem with Reynolds boundary. Thus a perturbed equation was directly obtained from the corresponding finite element equations. This made it feasible to simultaneously calculate the nonlinear oil film forces and their Jacobians matrices of compatible accuracy, with a small amount of increase in the computing efforts. The periodic unbalance responses of the system were obtained making use of shooting method, while the variations in the bifurcation behaviors of the periodic motions with the bearing design parameters were obtained making use of the path-following technique. The numerical examples indicated that it was feasible to save the computing time making use of the established method.
Keywords:fluid lubrication  bearing-rotor dynamics  nonlinear  finite element method  bifurcation
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《摩擦学学报》浏览原始摘要信息
点击此处可从《摩擦学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号