NGW型行星轮系模态特性及参数敏感性研究  

Study on the mode characteristics and parameter sensitivity for NGW planetary gear system

作　　者：魏静[1] 吕程[1] 孙伟[1] 才进[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《振动工程学报》2013年第5期654-664,共11页Journal of Vibration Engineering

基　　金：2011年国家国际科技合作项目(2011DFB71670);国家重点基础研究发展计划(2013CB035402);中央高校基本科研业务费科研专题项目(DUT12JN04)

摘　　要：基于结构动力学固有特性计算原理,对NGW型两级行星轮系的模态特性及参数敏感性进行研究。利用集中质量法建立系统弯-扭-轴耦合的三维振动系统动力学数学模型,基于行星轮系啮合相位分析结果,确定各齿轮时变啮合刚度。研究NGW型行星轮系中单级及两级行星轮系耦合模型的模态特性,总结出行星轮扭转振动模式、全振动模式等典型振型。分析了时变刚度、行星轮与太阳轮支撑刚度以及质量等参数对系统固有频率影响规律。研究结果为NGW型行星轮系的动态特性优化设计提供理论依据。The mode characteristics and the parameter sensitivity for a two stages NGW planetary gear system are studied based on the principles of structure natural dynamical characteristics.The coupled lateral-torsional-axial vibration dynamical model of the planetary gear system is established using the parameter concentrating method.The time-varying meshing stiffness of the gear pair in planetary gear system is calculated based on the results of engaging phase relations in the planetary gear system.The mode characteristics of the single stage and two coupled stages NGW planetary gear system are analyzed.Some typical vibration mode of planetary gear system,such as torsional vibration mode,total vibration mode,etc.,are summarized.Furthermore,the influence to the mode characteristics induced by those parameters,such as time-varying meshing stiffness,supporting stiffness of planetary and sun gear,mass of planetary and sun as well as ring gear,and so on,are analyzed.It provides a theoretical basis for the dynamic optimum design of NGW planetary gear system.

关 键 词：NGW型行星轮系 模态特性 参数敏感性 振动模式 

分 类 号：TH113.1[机械工程—机械设计及理论] TH132.4