125MW汽轮发电机轴弯曲振动分析  

作　　者：曹凤波[1] 吴国建 

机构地区：[1]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040

出　　处：《科技创新与应用》2018年第24期57-58,61,共3页Technology Innovation and Application

摘　　要：根据铁木辛柯梁理论,利用有限元方法建立了转子轴承系统的横向振动微分方程,通过扫频方法求得了不同油膜刚度下系统的临界转速及相应的振型。再利用有限元方法解梁的静力问题,求得了轴系的抬高量。According to Timoshenko beam theory, the differential equation of lateral vibration of rotor bearing system is estab-lished using finite element method. The critical rotational speed and corresponding vibration modes of the system with different oilfilm stiffness are obtained by sweep frequency method. Then the finite element method is used to solve the static problem of thebeam, and the elevation of the shaft system is obtained.

关 键 词：柔性转子 刚度不平衡 临界转速 振型 抬高量 

分 类 号：TM311[电气工程—电机]