Simulation and Optimization Analysis of Clinching Joint Performance Based on Mould Parameters

Abstract

In order to improve the quality of clinching joint, the parameters of mould should be considered synthetically. In this paper, the Hollomon flow stress model is used to simulate material deformation, while Arbitrary lagrangain-Eulerian method to adjust the distorted meshes for improving the accuracy of finite element simulation. The experiment of multi-objective optimization and finite element simulation method are combined to study the relationship underneath between the mould parameters and quality of clinching joint. As two of the most important quality related indicators, the neck thickness and self-lock value of clinching joint are optimized by the genetic algorithm and the optimal solution of the mould parameters are obtained accordingly. The final experimental results show the obvious quality improvement of clinching point after the optimization of the mould parameters. This progress provides reference for the multi-parameter optimization of the mould.