考虑联轴器不对中的双转子动力响应分析  

Dynamic Response Analysis of Double Rotors Considering Misalignment of Coupling

作　　者：孙传宗 刘博阳 单光坤[1] 马铁强[1] 姜喜耀 SUN Chuanzong;LIU Boyang;SHAN Guangkun;MA Tieqiang;JIANG Xiyao(School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,沈阳110870

出　　处：《机械工程师》2021年第11期16-18,21,共4页Mechanical Engineer

基　　金：辽宁省科技厅博士启动基金“航空发动机双转子系统非线性动力学建模及振动机理研究”(2019BS182);辽宁省教育厅基础研究项目“支持可调变量的复杂转子建模方法及非线性动力学特性研究”(LJGD2019009)。

摘　　要：对含联轴器不对中的双转子系统进行动力学分析,首先运用三维软件对双转子进行建模,利用有限元软件对其进行分析,然后采用固定模态综合法对其进行降维,根据联轴器存在的平行不对中的运动特征,建立了转子不对中力学模型,推导了双转子系统联轴器不对中动力学方程。结果表明:当联轴器发生不对中时,低压转子不对中会对高压转子产生影响。含有联轴器不对中故障的转子会出现二倍频,二倍频随联轴器不对中的加大而加大。This paper carries out the dynamic analysis of the double rotor system with coupling misalignment.Firstly,the three-dimensional software is used to model the double rotor system,and the finite element software is used to analyze it.Then,the fixed mode synthesis method is used to reduce its dimension.According to the motion characteristics of the parallel misalignment of the coupling,the mechanical model of the rotor misalignment is established,and the misalignment of the double rotor system is deduced kinetic equation.The results show that:when the rotor misalignment occurs,the misalignment of low pressure rotor will affect the high pressure rotor.The rotor with coupling misalignment fault will have double frequency,which increases with the increase of coupling misalignment.

关 键 词：双转子系统 联轴器不对中 非线性动力学 

分 类 号：TH133.4[机械工程—机械制造及自动化]