转子——轴承系统避开共振的动力修改再设计

Redesign of dynamic modification for rotor-bearing system to avoid resonance

针对转子———轴承系统的结构特点 ,考虑到轴承对结构动态特性影响很大 ,且具有相对的独立性和易更改性 ,应用数学规划的思想和方法 ,建立了系统频率优化的统一数学模型 ,以特征灵敏度分析为基础 ,提出了使转子———轴承系统避开共振的动力修改再设计的求解策略及方法。

Resonance is a problem in the rotor-bearing system.In the rotor-bearing system, the bearings are relatively independent and liable to change, and their physical parameters have a great influence on the dynamic properties of the structure.This paper establishes a mathematical model of trequency optimization for the system by means of mathematical planing,and,on the basis of sensibility analysis,proposes a solution for the redesign of dynamic modification in order to avoid resonance.Moreover, a practical example is given to illustrate its applications and effectiveness of the method.