The Optimization of Small End Bushings of Connecting-Rod in Heavy-Load Diesel Engines

Abstract:

The mechanical fit between the connecting rod's small end and the bush is a typical interference fit. In this paper, an elastic-plastic finite element model of the assembly of the connecting rod and the bush is built based on ABAQUS simulation platform and simulation experiments are carried out by adopting the method of design of experiments. The magnitude of interference and the thickness of the bush are set as the test factors and the maximum radial deformation of the connecting rod’s small end hole, the radial contact pressure between the connecting rod and the bush, the plastic deformation of the bush and the fatigue strength safety coefficient of the connecting rod small end are set as the response variables. Based on the response surface equations, the multi-objective optimal approximate mathematical model is set up and the Pareto optimal set are gained and discussed.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 1215-1219
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.1215
• Online since: May 2014
• Authors: Song Yin*, Wen Jie Qin
• Keywords: Bush, Connecting-Rod, Interference, Multi-Objective Optimization (MOP), Response Surface

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