RV传动中曲柄轴的模态分析  

Crank Shaft Modal Analysis Of RV Reducer

作　　者：何卫东[1] 姜振波[1] 鲍君华[1] 张迎辉[1] 

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2011年第2期28-32,共5页Journal of Dalian Jiaotong University

摘　　要：在完成对RV-250AII型减速器实体模型建模的基础上,采用有限元分析软件Ansys,对RV传动中的关键部件曲柄轴分别进行自由边界支撑和实际边界支撑条件下的模态分析.通过对其固有频率等仿真计算结果进行分析,获得了可能引起整机共振的零件本身的固有频率范围.通过分析位移和节点变形图以获得零件上发生最大刚体位移的位置,为优化设计提供参考.提出改进建议,分别对增加曲柄轴轴颈和减少行星轮质量两种方案进行分析,验证了对改变固有频率及避免共振的影响,同时通过比较得知减轻行星轮质量的方案更优.Based on a established real model of RV-250AII reduction gear,the important modes are analyzed for the crank shaft using finite element analysis software Ansys in the situation of free border and real border.Through analyzing the natural frequency simulation results,a frequency range is obtained for the parts which resonate easily with the complete machine natural frequency,and the biggest rigid body displacement position through the displacement and nodes distortion chart are determined which is useful to the RV reduction gear optimization design,and offers improving suggestions.The analysis of the improved model with increasing the diameter of the crank axis neck and decreasing planet wheel mass proves effectness on changing natural frequency and avoiding resonance,and the scheme of decreasing the planet wheel mass is much better.

关 键 词：RV减速器 模态分析 曲柄轴 改进方案 

分 类 号：TH133.2[机械工程—机械制造及自动化]