考虑支承跨距的非线性转子系统动力学特性研究  

STUDY ON DYNAMIC CHARACTERISTICS OF NONLINEAR ROTOR SYSTEM CONSIDERING SUPPORT SPANNING

作　　者：李辉 管洪杰 邵凤翔 刘希东 LI Hui;GUAN HongJie;SHAO FengXiang;LIU XiDong(Department of Mechanical,Henan University of Engineering,Zhengzhou 451191,China;Zheng Zhou Research Institute of Mechanical Engineering,Co.,Ltd.,Zhengzhou 450052,China)

机构地区：[1]河南工程学院机械工程学院,郑州451191 [2]郑州机械研究所有限公司,郑州450052

出　　处：《机械强度》2021年第1期44-49,共6页Journal of Mechanical Strength

基　　金：河南省高新技术领域科技攻关项目(172102210202)资助。

摘　　要：根据主轴变形几何模型求得主轴前端总位移关系式,依据前端最小位移确定主轴的最佳支承跨距,进而建立了考虑支承跨距的转子轴承系统非线性动力学模型。运用数值积分方法,给出最优跨距支承下转子系统的非线性动力学响应,采用轴心轨迹、相图及Poincaré图分析了转速对系统动力学响应的影响。结果表明:当转子轴承系统在最佳支承跨距下运行时,呈现出良好的系统稳定性。According to the geometric model of spindle deformation,the total displacement relation of the front end of the spindle is obtained,and the optimum bearing span of the spindle is determined according to the minimum displacement of the front end.By means of numerical integration,the nonlinear dynamic response of the rotor system with the optimal span support is given,and the influence of rotational speed on the system dynamic response is analyzed by using axial trajectory diagram,phase portraits and Poincaré map.The results show that the rotor bearing system has good stability when it is running under the optimum support span.

关 键 词：转子轴承系统 最佳支承跨距 非线性动力学 

分 类 号：TH113[机械工程—机械设计及理论]