曲轴铸造设计及其有限元实验分析  

Casting Design of the Crankshaft and its Finite Element Experiment Analysis

作　　者：赵军友[1] ZHAO Junyou(College of Mechanical and Electronic Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东)机电工程学院,山东青岛266580

出　　处：《实验室研究与探索》2018年第8期130-133,共4页Research and Exploration In Laboratory

基　　金：教育部来华留学授课品牌课程建设(教外司留[2017]40号)

摘　　要：曲轴的动力学特性直接关系到整个内燃机中的效率,尤其是疲劳寿命。建立了柴油机曲轴的飞轮组三维模型,选用Hyper Mesh进行网格优化,最后建立了相应的动力学仿真Excite模型。实验结果表明:在轴颈两段的应力集中处较容易发生曲轴疲劳破坏,相应的疲劳寿命为最短,将是第一个发生疲劳破坏。结果对于曲轴的疲劳寿命改进具有一定的参考意义。The dynamic characteristics of the crankshaft are directly related to various important indexes in the whole internal combustion engine,especially the fatigue life.Firstly,a 3d model of the engine crankshaft was established,then the grid optimization of HyperMesh was selected,and the corresponding dynamic simulation model was established.The results show that the fatigue life of two journals is the shortest,and its fatigue failure is the first one.The above results have certain reference significance to the fatigue life improvement of crankshaft.

关 键 词：柴油机曲轴 实验分析 有限元 HYPERMESH 设计 铸造 疲劳寿命 疲劳破坏 

分 类 号：TN32[电子电信—物理电子学]