Research on the hydroforming law of variable cross-section shaped tubular automobile longitudinal arm

• Autorzy: Li Jian , Li Yanjun , Liang Peng , Xie Guoan , Yang Jiachun , Shi Xianlin

Identyfikatory

DOI

10.1007/s43452-024-01062-w

• Języki publikacji: EN

Abstrakty

EN

In order to study the hydroforming simulation process of variable cross-section shaped tubular automobile longitudinal arm and the influence law of key factors on its forming quality, and to provide guidance for its engineering application. Firstly, the numerical simulation and experimental analysis of hydroforming are carried out on variable diameter tube with similar characteristics to the longitudinal arm hydroforming, and the correctness of the built finite element model and numerical simulation method is verified through experiments. Then, according to the structural characteristics of the automobile longitudinal arm parts, determine the longitudinal arm hydroforming process and the main molding parameters, and analyze the molding process by numerical simulation. According to the simulation results, the effects of hydroforming initial internal pressure, initial feeding, friction coefficient and shaping pressure on the wall thickness characteristics and shaping rules of the longitudinal arm are investigated, and the hydraulic expansion test of automobile longitudinal arm is carried out on the basis of the optimal loading path obtained. The results show that: in the case that the initial internal pressure does not reach the cracking pressure, the initial internal pressure and initial axial feeding has a greater impact on the wall thickness of the automobile longitudinal arm, reduce the friction coefficient can improve the material flow performance, improve the uniformity of the wall thickness of the parts, and appropriately increase the shaping pressure can improve the dimensional accuracy of the longitudinal arm molding and the molding quality. It is verified by experimental comparison that the whole process of automobile longitudinal arm forming simulation based on bending-hydraulic forming has high feasibility, and a relatively good loading path can be obtained to provide reference for practical engineering applications.

Słowa kluczowe

EN

hydroforming; forming process; initial loading conditions; numerical simulation analysis

PL

hydroformowanie; symulacja numeryczna; obciążenie początkowe

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2025
• Tom: Vol. 25, no. 1
• Strony: art. no. e3, 2025
• Opis fizyczny: Bibliogr. 22 poz., fot., rys., tab., wykr.

Twórcy

autor

Li Jian

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

autor

Li Yanjun

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

autor

Liang Peng

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

• https://orcid.org/0000-0002-4512-4731

autor

Xie Guoan

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

autor

Yang Jiachun

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

autor

Shi Xianlin

• School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)