基于有限元的发动机连杆优化设计  

Optimal design of engine connecting rod based on FEM

作　　者：杨志波[1] 罗鹏飞[1] 刘凯飞[1] 

机构地区：[1]河南理工大学机械工程与动力学院,河南焦作454003

出　　处：《河南理工大学学报（自然科学版）》2013年第1期65-68,共4页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省重点攻关项目(122102210045);河南省教育厅自然科学基金(12B460011);河南理工大学博士基金(B2009-79)

摘　　要：连杆是发动机的重要组成部分,它的设计性能直接影响着发动机的寿命.传统经验设计的连杆,因其质量较大,易引起连杆压弯变形等情况,从而导致失效.针对这一问题,根据连杆的实际工作状况,以ANSYS软件为平台,建立了连杆的有限元模型,在满足屈服强度条件下对连杆进行结构优化设计,得出的连杆质量比传统设计的质量要小.这不仅可以减少连杆的惯性力,节约材料,而且又可增加发动机的寿命.该方法可以为发动机中的连杆优化改进提供理论依据.The connecting rod whose design performances impact on the life span of an engine is the important part of the engine. The mass of the connecting rod designed by the traditional empirical method is so heavy that it is might failed by its compression bending deformation. In view of the problem, according to the actual working conditions of the connecting rod, a finite element model of the connecting rod was established by means of software of ANSYS, and at the condition of meeting yield strength, the structure of the connecting rod was optimized. The result of optimal design was that the mass was lighter than before, which can not only save the material, but also prolong the life span of an engine. The proposed method affords a theoretical basis to improve the connecting rod.

关 键 词：有限元 ANSYS 发动机连杆 

分 类 号：TH16[机械工程—机械制造及自动化]