doi:10.16186/j.cnki.1673-9787.2021010129

Received:2021/01/28

Revised:2021/04/23

Published:2022/07/15

Study on durability of car trunk torsion bar based on test benchmarking method

CHENG Xueli1, LU Zhicheng2, AN Linchao1

1.Department of Mechanical Engineering， Henan Institute of Technology ，Xinxiang 453000 ， Henan， China;2.Technology Center，Dongfeng Peugeot Citroen Automobile Company Ltd. ， Wuhan  430056 ， Hubei， China

Abstract:In view of the fracture failure of the torsional rod in the durability test of the car,the parameters such as the grid type ,the size of the grid, the drive way of torsion bar and the connection mode,etc. , which affecting the CAE simulation results, were analyzed and identified. An effective torsion bar finite element analysis model was established by test benchmarks. Several structure optimization schemes of torsion bar were proposed,and the CAE calculation and optimization iterative analysis were carried out for different optimization schemes. It was concluded that the scheme was the optimal one by optimizing the corner transition region and by increasing the torsion angle of torsion bar. The CAE analysis results and the test results of the optimal scheme were test benchmarked,the results showed that the optimized torsion bar met the requirements of man-machine operation and the durability target performance of 50 thousand times of opening and closing, and the improved design method had reference significance for similar structural optimization design.

Key words:test benchmarking;trunk torsion bar;durability;CAE

基于试验对标法的轿车行李箱扭杆耐久性研究_程雪利.pdf