有限宽轴承-转子系统非线性动力学行为的若干问题研究  

Study on Some Problem of Nonliner Dynamical Behaviors of a Finite Journal Bearing-Rotor System

作　　者：席慧玲[1] 孙保苍[2] 

机构地区：[1]中北大学,太原030051 [2]江苏大学,镇江212013

出　　处：《汽轮机技术》2005年第6期437-440,共4页Turbine Technology

基　　金：江苏大学高级人才基金(04JDG010)

摘　　要：利用对非定常短轴承的油膜压力分布公式进行了变分修正所得出的具有足够精度,适合轴径大扰动情况下的有限宽圆轴承非定常油膜力的解析公式,采用数值模拟,对有限宽轴承-刚性Jeffcott转子的非线性动力学行为进行了研究,得出了与已有文献结论相近似的分岔与混沌特性。In this paper,the unsteady oil -film force formula of the short bearing is modified by variational approach. The analytical formula of the unsteady oil -film force of the finite beating not only holds the high precision ,but also adapt to the beatings with the large length to diameter ratio. The nonlinear dynamical behaviors of the finite rotor - bearing system are investigated with the modified form and numerical simulation. The properties of bifurcation and chaos similar with other papers are obtained.

关 键 词：变分方法 油膜力 非线性 分岔 概周期 转子 

分 类 号：O322[理学—一般力学与力学基础] TH133[理学—力学]