汽车发动机曲轴扭振的多体动力学分析  

Multi-body Dynamics Analysis on Torsional Vibration of Automotive Engine Crankshaft

作　　者：段秀兵[1] 郝志勇[2] 岳东鹏[1] 宋宝安[1] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]浙江大学机械与能源学院,杭州310027

出　　处：《汽车工程》2005年第2期233-235,250,共4页Automotive Engineering

基　　金：国家自然科学基金资助项目 (5 0 175 0 78)。

摘　　要：采用结合有限元法(FEM )的多体系统仿真(MSS)方法对汽车发动机曲轴进行扭转振动分析。建立了包括柔性曲轴的车用发动机曲轴系统的多体动力学模型。根据多体动力学仿真计算结果,分析了曲轴的扭转振动,测量了曲轴自由端的扭转振动,与仿真计算结果吻合较好。By using multi-body system simulation (MSS) method, combined with fin ite element analysis (FEA), the torsional vibration of automotive engine cranksh aft is analyzed in this paper. The multi-body dynamics model for the crankshaft assembly including flexible crankshaft is established. The torsional vibration o f crankshaft is analyzed based on the results of multi-body dynamics simulation . The torsional vibration at the free-end of crankshaft was measured, which coin cides well with the simulation.

关 键 词：汽车 发动机 曲轴扭振 多体动力学 有限元法 多体系统仿真 扭转振动分析 

分 类 号：U464[机械工程—车辆工程]