旋转舵面非线性自由振动研究

Research on Non-linearity Free Vibration of Turning Control Surface

通过构建带间隙、摩擦、阻尼的非线性力学模型,研究弹簧振子处于间隙区和弹簧阻尼区的振动特性,对整个振动过程求解,得到非线性系统自由衰减振动周期的解析表达式。同时,还研究了影响非线性自由振动的因素,可为非线性系统固有频率控制及非线性系统模态试验方法提供理论参考。

This paper, by constructing non -linear mechanics model of the zone clearance, friction and clamp, researches the vibration characteristics of the spring vibrator at clearance zone and spring damp zone, finds the solution for whole vibration process and obtains the resolution expression of free decay vibration period. At the same time, the factors that affect the non-linearity free vibration are studied, which provides the natural frequency control of the non-linearity system and mode test method of the non-linearity system with theoretical reference.