大中型卧式电机轴向模态的分析研究王栎宁(上海电气集团上海电机厂有限公司ꎬ上海200240)摘要:在一些大中型卧式电机轴向振动案例中ꎬ发现电机在静止与运行状态下的轴向模态存在较大区别ꎮ通过东华动态信号采集仪DH5927N对三台不同型号大中型卧式电机进行轴向模态试验ꎬ得出电机在静止状态与运行状态下的轴向固有频率ꎬ找到电机轴向模态与运行状态之间的规律ꎻ基于模态试验结果对其中一台电机的有限元模型进行模态参数修正ꎬ通过ANSYS软件进行有限元模态分析ꎬ并给出了两种调整电机轴向模态的方法ꎮ关键词:电机轴向ꎻ端盖ꎻ模态ꎻ固有频率ꎻ有限元ꎻ结构优化中图分类号:TM302文献标志码:ADOI编码:10.16712/j.cnki.cn31-1868/tm.2023.02.006Analysisandresearchonaxialmodesoflargeandmedium-sizedhorizontalmotorWANGLining(ShanghaiElectricMachineryCo.ꎬLtd.ꎬShanghai200240ꎬChina)Abstract:Insomecasesofaxialvibrationoflargeandmedium-sizedhorizontalmotorsꎬitisfoundthattheaxialmodesofmotorsatrestandinrunningstatearequitedifferent.ThroughDonghuadynamicsignalacquisitioninstrumentDH5927Nꎬthreelargeandmedium-sizedhorizontalmotorsofdifferentmodelsweretestedinaxialmodeꎬtheaxialnaturalfrequenciesofmotorsinstaticstateandrunningstatewereobtainedꎬandtherulebetweentheaxialmodeandrunningstatewasfound.Basedonthemodaltestresultsꎬthemodalparametersofthefiniteelementmodelofoneofthemotorsweremodified.Thefiniteelementmodalanalysiswas...