摘要
本文建立了通过齿式联轴器连接、滚动轴承支承的双盘转子动力学模型。该模型引入了齿式联轴器啮合力,不对中力和碰摩力。同时搭建转子实验台,并且进行了低转速下不对中-碰摩实验,研究转子在低速下的动力学特性和碰摩力特征。结果表明:低速实验下转子碰摩对于整体振动影响不大,在低转速下会产生一定的分数频率,并对倍频幅值产生一定影响;仿真结果显示,随着转速的增加,转子与静子产生碰摩,系统逐渐产生分数频率,并且系统的运动稳定性变差,碰摩力变得无规律。
In this paper,the dynamic model of a two-stage rotor system which is connected by a gear coupling and supported on ball bearings is established.The meshing force of gear,misalignment,and rub-impact are introduced into the model.Experiments on the rotor and its misalignment-rubbing faults at low speed are conducted.The nonlinear dynamic behavior of the rotor system is studied under fault conditions.The experimental data of the rotor system under misalignment-rub is analyzed.The results show that:the effect of rub fault on the rotor system is not clear under low speed;some frequency divisions appear and the double frequency amplitude has only a little change;the simulation results show that with the increasing of speed,the rub occurs between the rotor and the stator,sideband frequencies appear,the system becomes more unstable,and the change of rub-impact force is irregular.
作者
董庆运
马梁
鲁鑫
Dong Qingyun;Ma Liang;Lu Xin(Tianjin University of Technology and Education,Tianjin 300222,ChinaCivil Aviation University of China,Tianjin 300300,China;Tianjin University,Tianjin 300072,China)
出处
《机械科学与技术》
CSCD
北大核心
2019年第8期1206-1213,共8页
Mechanical Science and Technology for Aerospace Engineering
基金
青年科学基金项目(51705355)资助
