计算力学学报2017，Vol.34Issue(2)：155-161,7.DOI:10.7511/jslx201702005
轴承-转子系统在基础运动作用时的非线性分析
Nonlinear analysis of bearing-rotor system with base movements
摘要
Abstract
Nonlinear dynamics characteristics of bearing-rotor system are necessary to be investigated for centrifugal machines in design stage as well as nonlinear response of the system subjected to base movements.The simplified model with multi-freedom-degree is applied to perform the numerical simulation.The nonlinear model of oil film bearing is taken into account in motion equations.The adaptive step method of Runge-Kutta-Felburg is applied to solve the differential equations.The artificial sine wave acceleration is considered as base movement input to the system.The Poincaré maps,bifurcation diagrams and cascade maps are used to investigate the dynamics of vertical rotor system.Combination resonance behavior which due to both rotational speed and base movement is discovered by the Fast Fourier Transform.The results yield not only nonlinear characteristics of the pump rotor,but also combination resonance under base movements.关键词
非线性油膜力/分岔/油膜涡动/基础运动/组合共振Key words
nonlinear oil film force/bifurcation/oil whirl/base movement/combination resonance分类
机械制造引用本文复制引用
王睿,郭杏林..轴承-转子系统在基础运动作用时的非线性分析[J].计算力学学报,2017,34(2):155-161,7.基金项目
国家重点基础研究发展计划(2011CB706504)资助项目. （2011CB706504）
