关键词: 汽车发动机；连杆总成；动力学分析；有限元分析

Abstract: In this paper, the mechanical model of engine connecting rod assembly is established based on ALTAIR/HyperMesh. The stress analysis of automobile engine connecting rod assembly is carried out, on this basis, the dynamics analysis of the key point of connecting rod assembly is carried out with the help of Fatigue analysis software. Under the influence of the maximum explosion pressure of cylinder, material wear and other factors, check the deformation results, stress results and bearing bush back pressure results of the connecting rod assembly, so as to judge whether the deformation of connecting rod meets the requirements of wear and lubrication and strength requirements. It provides the basis for structural design and performance improvement of connecting rod.

Key words: Automobile engine; Connecting rod assembly; Analysis of dynamics; Finite element analysis