Simulation Analysis of Torsion Beam Hydroforming Based on the Fluid-Solid Coupling Method

Chinese Journal of Mechanical Engineering

Original Article

Jian Li¹  Jiachun Yang¹  Yu Huang¹  Yongdong Peng¹  Weixuan Zhang¹ 

[1] Guangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, 545006, Liuzhou, Guangxi, China;

关键词: Fluid-solid coupling;    Hydraulic expansion;    Rectangular tube;    Torsional beam;    Wall thickness distribution;   

DOI  :  10.1186/s10033-022-00819-9

 received in 2021-12-29, accepted in 2022-10-31,  发布年份 2022

来源: Springer

【 摘 要 】

Hydroformed parts are widely used in industrial automotive parts because of their higher stiffness and fatigue strength and reduced weight relative to their corresponding cast and welded parts. This paper reports a hydraulic-forming experimental platform for rectangular tube fittings that was constructed to conduct an experiment on the hydraulic forming of rectangular tube fittings. A finite element model was established on the basis of the fluid–solid coupling method and simulation analysis. The correctness of the simulation analysis and the feasibility of the fluid–solid coupling method for hydraulic forming simulation analysis were verified by comparing the experimental results with the simulation results. On the basis of the simulation analysis of the hydraulic process of the torsion beam using the fluid–solid coupling method, a sliding mold suitable for the hydroforming of torsion beams was designed for its structural characteristics. The effects of fluid characteristics, shaping pressure, axial feed rate, and friction coefficient on the wall thicknesses of torsions beams during formation were investigated. Fluid movement speed was related to tube deformation. Shaping pressure had a significant effect on rounded corners and straight edges. The axial feed speed was increased, and the uneven distribution of wall thicknesses was effectively improved. Although the friction coefficient had a nonsignificant effect on the wall thickness of the ladder-shaped region, it had a significant influence on a large deformation of wall thickness in the V-shaped area. In this paper, a method of fluid-solid coupling simulation analysis and sliding die is proposed to study the high pressure forming law in torsion beam.

【 授权许可】

CC BY   
© The Author(s) 2023

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