突变扭矩激励下转子系统横振响应  

Transverse Vibration Response of Rotor System Under Mutational Torque Excitation

作　　者：孙虎儿[1,2] 杨兆建[1] 梁群龙[1] 庞新宇[1] 

机构地区：[1]太原理工大学机械工程学院,太原030024 [2]中北大学机械工程与自动化学院,太原030051

出　　处：《振动．测试与诊断》2011年第5期622-625,667,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(编号:50575157,51075292/E050302);山西省自然科学基金资助项目(编号:2006011057)

摘　　要：针对细长轴的转子系统的特点,建立了突变扭矩激励下的转子系统动力学模型,对该模型进行了求解和仿真;分析了仿真得到的轴心位移的时域和频域波形。结果表明,在突变扭矩激励下转子系统的轴心位置发生偏移。偏移量随着扭矩增大而增大,轴心轨迹也受到影响。在受激励的初始阶段,轴心轨迹很不稳定。随着扭矩趋于稳定,轴心轨迹逐步趋于稳定。最后,建立了与仿真试验相同条件的试验台,试验验证了该理论推导的正确性。实测曲线与理论曲线的误差表明,联轴器的刚度对横向振动响应影响较大。According to the characteristic of the rotor system of long & thin shaft,a dynamics model of rotor system under the mutational torque excitation is established.The simulation and the solution are carried out.Time domain and frequency domain waveforms of axis displacement are analysed.The result shows that the axis position is shifted under the mutational torque excitation,and the shift magnitude is determined by excitation size.The axis path is affected and it is un stable at the initial stage of motivation.The axis path gradually becomes stable with torque being stable.The test is set with the same simulation conditions.The correctness of the theory test is verified.The error between the measured curve and the theoretical curve shows that the transverse vibration response affects the coupling stiffness.

关 键 词：转子 故障诊断 轴心轨迹 扭矩激励 突变扭矩 

分 类 号：TH113.1[机械工程—机械设计及理论]