新型挤压油膜阻尼器油膜压力特性分析  

Film Pressure Characteristic Analysis of Squeezed Film Damper

作　　者：张蕊华[1] 汤军浪[1] 熊智文[1] 胡莹[1] 

机构地区：[1]南昌大学,南昌330031

出　　处：《中国机械工程》2010年第15期1840-1843,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50965014)

摘　　要：利用达朗贝尔原理,建立了新型金属橡胶挤压油膜阻尼器转子系统的运动方程,得到了相对偏心率的数学表达式;通过对比分析传统挤压油膜阻尼器与新型金属橡胶挤压油膜阻尼器的油膜压力分布特性,证明了新型金属橡胶挤压油膜阻尼器的油膜刚度在较大的偏心率范围内基本呈线性变化,解决了传统挤压油膜阻尼器所存在的油膜刚度高度非线性的问题。It set up the kinematical equation of a new type metal rubber squeezed film damper＇s rotor system based on the D’alembert principle herein. From the equation, it deduced the mathematical expression of the relative eccentricity of the rotor system. By contrast the film damper pressure distributing characteristics were analyzed between the traditional squeezed film damper and the new type metal rubber squeezed film damper. It proves the new type metal rubber squeezed film damper presents characteristics as film stiffness changing with linearity even under the large eccentricity ratio range, which can effectively improve the nonlinearity characteristics of the film stiffness of the traditional squeezed film damper.

关 键 词：金属橡胶 挤压油膜阻尼器 油膜压力场分布 油膜刚度 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程]