摘要
用有限元方法研究了滚动轴承支撑的整体式转子和电磁轴承支撑的焊接式转子这两种高速电机轴承-转子系统的临界转速。在分析两种系统的支撑刚度特性及转子结构装配关系的基础上建立了有限元模型,计算出系统的临界转速并对不同支撑和装配方式对轴承-转子系统临界转速的影响进行了讨论,最后通过锤击实验和整机实验全面验证结果的有效性,为高速电机轴系设计和动力学分析提供了参考。
Here, critical speeds of an integral rotor supported by rolling bearings and a welded rotor supported by magnetic bearings for high speed motors were investigated. The finite element models were built based on analyses of different supports and different rotor assembly. The influences of different supports and rotor assembly on a bearing-rotor system were discussed. At last, the experimental results of hammering a free rotor and tests of a prototype motor well with the calculation ones. It was shown that the validity of the reference for design and dynamic analysis of high speed rotors.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第8期24-30,共7页
Journal of Vibration and Shock
基金
国家自然科学基金项目(51175411
51275386)
国家自然科学基金青年基金项目(11102144)
关键词
高速电机
临界转速
滚动轴承
弹性支撑
挤压油膜阻尼器
电磁轴承
high-speed motor
critical speed
rolling magnetic bearings agreed FE models proposed is verified. The results provided a bearings
flexible support
squeeze film damper
