摘要
研究了航空发动机模拟低压转子的动力学响应随系统参数的变化。首先基于实际的发动机模拟低压转子,建立了弹性支承-两端带挤压油膜阻尼器的双盘转子动力学模型,推导了其运动微分方程。对于这个12维的动力学方程组,采用数值方法进行了求解。研究了支承刚度,两盘质量比,阻尼系数变化对系统响应的影响。并在多个条件下发现了非线性的拟周期响应。
This paper investigated the variation of the dynamical response of a low pressure rotor in turboshaft engine with its system parameters. Based on the model for low pressure rotor, a dynamical simplified model for two- disk rotor with Squeeze Film Damper at each end was built, and the motion equations were derived. The numerical method was applied to solve the 12dimensions differential equations. The influence of some parameters, e.g., the stiffness of support, mass ratio of the two disks and damping coefficient, were analyzed.
出处
《机械科学与技术》
CSCD
北大核心
2014年第8期1127-1130,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(11172234)资助
关键词
双盘转子
挤压油膜阻尼器
支承刚度
质量
阻尼系数
aircraft engines
damping coefficient
damping
differential equations
equations of motion
liquid films
mass
mathematical models
numerical methods
pressure
rotors
squeeze film damper
stiffness
two-disk rotor
