摘要
以多自由度转子系统为对象 ,运用模态降阶和变步长的Newmark积分方法分析了油膜力分别按短轴承理论和长轴承理论计算时的非线性振动特征 ,同时分析了转子不平衡量的大小和转速对轴颈振动的涡动轨迹。
On the basis of the stable short bearing theory and long bearing theory,the nonlinear dynamical equation of a mult\|freedom rotor system can be solved by the order reduction and the Newmark integral method.The characteristics of rotor trajectories,frequency spectrum and stability of the nonlinear rotor\|bearing system were nurnerically studied under different unbalance and roating speed.The result can provide the theoretical reference for forecasting and diagnosing fault of oil film unstabbility.
出处
《流体机械》
CSCD
2003年第4期28-31,共4页
Fluid Machinery
基金
国家教委博士点基金项目 ( 960 3 3 5 2 2 )
关键词
非线性转子系统
油膜振荡
不平衡量
稳定性
nonlinear rotor bearing system
oil film oscillation
unbalancing weight
