单盘转子不平衡的瞬态动力响应分析

Analysis of Transient Response of Flexible Jeffcott Rotor

转子的不平衡是引起转子失稳的主要因素,对机器有着不利的作用;不平衡的响应特性是一个值得关心的问题。本文建立了单盘转子的运动微分方程,分析了在各个加速度条件下的响应特性,研究表明,不同加速度的不平衡瞬态响应有一定的规律,加速度越大,响应越小,相位越小;同时进动角速度可以分为三个区域波动。这些特性对于转子平衡有一定的指导作用。

This paper investigates the transient response of flexible Jeffcott rotor under the unbalance force. Firstly, the movement differential equation has been established. Through analysis, it is found that the responses under the different accelerations have the regular characteristics, and that the amplitude of response and phase becomes smaller when the accelerations have been increased. The presion angular velocity fluctuates in three areas. These characteristics will help the balance of rotor.