柴油机曲轴静动特性的三维有限元分析  

Three-Dimensional FEM Analysis of Engine Crankshaft Static andDynamic Behaviour

作　　者：冯国胜[1] 张幽彤[2] 张玉申[2] 

机构地区：[1]石家庄铁道学院机械工程系,石家庄050043 [2]北京理工大学车辆工程学院

出　　处：《内燃机工程》2003年第2期74-77,共4页Chinese Internal Combustion Engine Engineering

基　　金：河北省科技攻关项目 ( 982 13 3 0 8D)

摘　　要：采用有限单元法 ,对 4 190柴油机曲轴进行了符合实际情况的三维建模 ,研究了整体曲轴的变形和应力状态 ,校核了曲轴在交变载荷下的疲劳强度 ,探讨了目前曲轴应力有限元计算中广泛采用的单拐力学模型的可靠性 ,并对曲轴进行了模态分析 。By means of FEM, this paper set up a 3 dimentional model for model 4190 diesel engine's crankshaft corresponding to practical conditions. The distortion and stress of the crankshaft was investigated. The fatigue strength of crankshaft was verified under changing load. The reliability of single crank stress analysis method, which is in current widely used, was discussed. The model analysis was made for the crankshaft, therefore the valuable theory basis is provided for engine design improving.

关 键 词：内燃机 曲轴 有限元法 疲劳强度 模态 

分 类 号：TK423.3[动力工程及工程热物理—动力机械及工程]