Transactions of Materials and Heat Treatment

Title：Experimental research on hydroforming of car chassis front frame

Authors： HAN Cong1 SUN Li-ning2 YUAN Shi-jian1 LIU Gang1(1.School of Materials of Science and Engineering Harbin Institute of Technology Harbin 150001 China 2.School of Mechanical Engineering Harbin Institute of Technology Harbin 150001 China)

Unit：

KeyWords： internal high pressure forming hydroforming front chassis frame structural component

ClassificationCode：TG394

year,vol(issue):pagenumber：2009,34(5):62-66

Abstract：

Curved hollow polygonal structural component has become an ideal structure used in automotive,aircraft and aerospace areas because it can meet the requirement of weight reduction,saving space,and improving strength and stiffness.The main problem of chassis front frame was taken as an example and the inhomogeneous deformation of the frame was investigated by experiment.The causes of the crack defects were analyzed.The relationship between the round radius and pressure and the thickness distribution of the hydroformed part was given.The results show that the main causes of the crack defect and the non-uniform thickness distribution are the non-uniform thickness of the bent tube due to the thinning and thickening of the bending process and the inhomogeneous circumferential deformation of the complex sections.The deformation and the thickness distribution can be controlled through preforming shape and qualified part can be successfully manufactured.

Funds：

国家自然科学基金资助项目(59975021)

Reference：

[1]Frank Horton.Hydroforming application trends in automo-tive structures[A].International Conference on Hydroform-ing[C].Fellbach,2003.
[2]Ko Muammer,Altan Taylan.An overall review of the tubehydroforming(THF)technology[J].Journal of MaterialsProcessing Technology,2001,108(2):384-393.
[3]Hartl Christoph.Research and advances in fundamentals andindustrial applications of hydroforming[J].Journal of Mate-rials Processing Technology,2005,167(2-3):383-392.
[4]苑世剑,王仲仁.内高压成形的应用进展[J].中国机械工程,2002,19(9):783-786.
[5]苑世剑,韩聪,刘钢,等.轿车副车架内高压成形[J].锻压技术,2004,29(3):41-44.
[6]Lee Hokook,Tyne CJ Van,Field David.Finite element ben-ding analysis of oval tubes using rotary draw bender for hy-droforming applications[J].Journal of Materials ProcessingTechnology,2005,168(2):327-335.
[7]Trana Kristoffer.Finite element si mulation of the tube hydro-forming process-bending,preforming and hydroforming[J].Journal of Materials Processing Technology,2002,127(3):401-408.
[8]Yuan Shijian,Han Cong,Wang Xiaosong.Hydroforming ofautomotive structural components with rectangular-sections[J].International Journal of Machine Tools and Manufac-ture,2006,46(11):1201-1206.

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