基于混合模型的转子临界转速计算  

Rotor critical speed calculation based on a mixed modeling method

作　　者：李超[1] 刘延峰[1] 艾丽昆[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《振动与冲击》2010年第11期245-248,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50975132);兰州理工大学博士基金项目(BS05200906)

摘　　要：采用集总参数和分布质量混合建模的方法,建立了转子-支承系统的力学模型,应用改进的Riccati传递矩阵法,综合考虑陀螺力矩、支承刚度、剪切变形等因素的影响,推导出了混合模型传递矩阵表达式,并在VB平台上编制了界面友好、操作简单、拓展性强的通用的转子临界转速计算程序。通过算例对程序的验证计算结果表明,混合建模方法计算结果精度高,算法正确,程序运行可靠。Using a mixed model of lumped parameter method and distributed mass method,the mechanical model of a rotor-bearing system was established.Based on Riccati transfer matrix method,the affecting factors of gyroscopic moment,supporting stiffness and shear deformation were taken into account,then a transfer matrix expression of the mixed model was deduced.A user-friendly,simple operation,strong extension and general rotor critical speed calculation program was developed with VB software.Examples were used to check the program as well.The calculation results showed that the proposed mixed modeling method is effective and has a higher precision.

关 键 词：混合模型 分布质量 传递矩阵 临界转速 转子 

分 类 号：TH113.1[机械工程—机械设计及理论]