基于不平衡响应的转子动刚度测量方法  

A Measurement Method of Rotor Dynamic Stiffness Base on Unbalance Response

作　　者：雷杰[1] 雷晓波[1] 房剑锋[1] 张帅 文敏[1] LEI Jie;LEI Xiaobo;FANG Jianfeng;ZHANG Shuai;WEN Min(Engine Department of Chinese Flight Test Establishment, Xi'an 710089, China)

机构地区：[1]中国飞行试验研究院发动机所,西安710089

出　　处：《机械设计与研究》2019年第2期142-146,共5页Machine Design And Research

基　　金：中能工业联合基金资助项目(6141B05110404)

摘　　要：基于转子不平衡响应原理,推导了转子动刚度计算方法,建立了一种转子系统动刚度测量方法。在某双盘转子试验器上开展了转子动刚度测量实验。实验结果表明:由转子动刚度曲线计算的一阶临界转速最大误差为1.5%;以盘一、盘二处的轴系静刚度为基准,由动刚度曲线计算的轴系静刚度最大测量误差为5.7%。利用转子动刚度研究了不同支座地脚螺栓拧紧力矩对转子系统的影响,结果表明:当支座反力小于支座拧紧力矩所能产生的最大静摩擦力时,增加支座连接刚度并不会改变转子系统的动刚度。Based on rotor unbalance response theory, the computing method of rotor dynamic stiffness was deduces, and the measuring ways was established. The rotor dynamic stiffness was measured on a two-disk rotor. The experimental results show: the maximum error of the critical speed is 1.5% gained from the rotor dynamic stiffness curve;the maximum measuring error of the rotor dynamic stiffness is 5. 7% taking rotor static-stiffness as standard. The research on how the tightening torque of screws on the base plate of the rotor support made influences on a rotor was carried out. Experimental results turn out that increasing coupling stiffness could not change rotor system dynamic stiffness if the reaction force on the support was less than the maximum static friction generated by the tightening torque.

关 键 词：转子动刚度 不平衡响应 相位 非线性阻尼 支座连接刚度 

分 类 号：V232.2[航空宇航科学与技术—航空宇航推进理论与工程]