转子系统振动特性演化规律研究  

Study on the Evolution Law of the Dynamics Characteristics of Rotor Systems

作　　者：花纯利[1,2] 曹国华[2] 冯世哲 刘后广[2] HUA Chun-li;CAO Guo-hua;FENG Shi-zhe;LIU Hou-guang(Defense Key Disciplines Laboratory of Ship Equipment Noise and Vibration Control Technology, Shanghai Jiaotong University, Shanghai 200240, China;School of Mechatronic Engineering, China University of Mining and Technology,Xuzhou 221116, Jiangsu China)

机构地区：[1]上海交通大学舰船设备噪声与振动控制技术国防重点学科实验室,上海200240 [2]中国矿业大学机电工程学院,江苏徐州221116

出　　处：《噪声与振动控制》2017年第2期1-6,61,共7页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51505476);上海交通大学舰船设备噪声与振动控制技术国防重点学科实验室开放基金资助项目(vsn201601)

摘　　要：基于碰摩理论建立Jeffcott转子系统动力学模型,基于现代非线性动力学和分叉理论对转子系统进行深入分析,确定周期无碰摩响应的边界、碰摩运动的边界及其稳定性边界。对系统参数阻尼比和偏心率对转子系统振动响应特性随旋转速度演化规律的影响进行详细分析,得到不同振动响应演化方式在阻尼比和偏心率参数平面上的分布,给出各种转子系统响应特性随旋转速度的演化规律。分析结果有助于更好地理解转子系统的无碰摩周期运动、同频全周碰摩运动、局部碰摩运动、反向涡动失稳以及跳跃现象等动态响应特性和系统参数之间的关系。The dynamic model of a Jeffcott rotor system is established based on the impact theory and analyzed by themodern nonlinear dynamics and bifurcation theories.The no rub-impact,the rub-impact boundary and the stable boundaryare determined.The influence of the system parameters such as damping radio and eccentricity on the evolution law of thedynamics characteristics of the rotor system is studied.Several kinds of evolution are then obtained in the parameter spacesof the damping radio and eccentricity,and the evolution law of the dynamics characteristics of the rotor system with thechanging of rotational speeds is given.These results provide an opportunity for a better understanding of the relationshipbetween the system parameters and the dynamical characteristics,such as periodtc no-rub motion,the synchronous fullannular rub motion,partial rub motion,the dry whip as well as the jump phenomena.

关 键 词：振动与波 转子系统 非线性振动 稳定性 碰摩 演化规律 

分 类 号：O322[理学—一般力学与力学基础]