摘要
基于ANSYS建立了大型屏蔽电机泵转子系统的有限元模型,通过模态分析和谐响应分析研究了陀螺效应对转子系统临界转速和质量不平衡响应的影响。分析结果表明:陀螺效应对临界转速计算结果影响较大,转子动力学分析时应考虑陀螺效应;考虑陀螺效应后,转子系统临界转速大于设计临界转速;各测点质量不平衡响应一次共振峰值小于横向振动设计限制;叶轮中心和上、下飞轮中心振幅远大于其它位置振幅,为易振动部位,实际运行中应重点选择这些位置进行振动监控。
The FEA model of a large-scale canned motor pump rotor is established based on ANSYS. The effects of gyroscopic effect on the critical rotating speed and the mass unbalance response are investigated by using modal analysis and harmonic response analysis. The analytical results show that the gyroscopic effect obviously affects crit- ical rotating speed and should be considered in the rotordynamic analysis. The calculated critical rotating speed is higher than the design value when the gyroscopic effect is considered. The first resonant peak values of mass unbal- ance response in all test points are within the design vibration limit. The vibration amplitudes of the impell and lower flywheel centres far exceed other test points. These test points are susceptive to vibration and monitored carefully in operation. er, upper should be
出处
《机械科学与技术》
CSCD
北大核心
2013年第3期358-361,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家重点基础研究发展计划(973计划)子课题项目(2009CB724302)资助
