带有支座松动故障的离心泵叶轮转子分岔特性分析  

STUDY ON DYNAMIC CHARACTERISTICS OF A CENTRIFUGAL IMPELLER-ROTOR WITH PEDESTAL LOOSENESS AND LATERAL FLUID FORCE

作　　者：蒋兆远[1] 孙启国[1] 李同杰[1] 王娟[1] 

机构地区：[1]兰州交通大学机电技术研究所,兰州730070

出　　处：《机械强度》2009年第5期707-711,共5页Journal of Mechanical Strength

基　　金：甘肃省自然科学基金(ZS031-B25-009-G);铁道部专项基金(JZ0002076)资助项目~~

摘　　要：将离心泵叶轮转子系统简化为中间带有刚性圆盘的柔性转子,在引入非线性横向流体激振力的条件下,建立带有支座松动故障的不平衡离心叶轮转子在非线性轴承油膜力作用下的振动模型,并推导系统的无量纲运动方程。运用数值积分法研究系统的分岔特性,分析横向流体激振力以及松动端轴承支座质量对该类离心泵叶轮转子系统非线性动力学特性的影响。The dynamic model of a centrifugal impeller-rotor with nonlinear lateral fluid force, nonlinear oil-film force and the pedestal looseness is built and dimensionless motion equations of the system are derived. Bifurcation characteristics of the system are studied using the numerical integration method. The influences of nonlinear lateral fluid force and the mass of the bearing base on loose part of the rotor system on the dynamic characteristics of the system are analyzed in detail.

关 键 词：离心泵叶轮转子 支座松动 流体激振力 非线性油膜力 分岔 

分 类 号：TH311[机械工程—机械制造及自动化] O322[理学—一般力学与力学基础]