多层油膜阻尼转子系统动力学建模方法的研究

Research on Dynamic Modeling of Flexible Rotor System with Multi Squeeze Film Damper

对多层油膜阻尼柔性转子系统的动力学模型进行了研究 .从运动流体的动量微分方程及其质量连续性方程出发 ,分别采用紊流短轴理论和层流长轴理论来分析挤压阻尼器油膜层和滑动轴承油膜层 ,推导出油膜层压力分布函数 .在模型的建立过程中 ,考虑了旋转机械中出现的外界阻尼力、间隙激励力。

The kinetic model of the flexible rotor system with multi squeeze film damper is studied. I is shown that inertia force is necessarily taken into account in the squeeze film where fluid flow is greatly changing. On the basis of the differential equations of fluid momentum and its mass continuity equation, turbulent pressure distributing function is derived with regard to fluid inertia force. In the mode, damping outside force, clearance actuating force, disturbing force with different frequency and static outside load are considered.