RESEARCH ON HYDROFORMING TUBULAR PART WITH LARGE PERIMETER DIFFERENCE
来源期刊：Acta Metallurgica Sinica2008年第2期
论文作者：X.S. Wang S.J. Yuan Y.X. Yao X.R. Huang Z.R. Wang
Key words：Hydroforming; Large expansion; Useful wrinkle; Asymmetrical part;
Abstract: The tube hydroforming process for manufacturing the tubular part with large perimeter difference was studied by means of experiments and FE simulation. It is an asymmetrical one and the expansion ratio is 70 percent. The part is successfully hydroformed by applying the useful wrinkles to accumulate suffcient metal in the area with large expansion ratio. The thickness distribution is analyzed, and the maximum thinning ratio of the part is 21.6 percent. It is shown from the experiment and simulation results that the tubular part with large perimeter difference, long expansion area and asymmetrical shape can be obtained in one step, applying the useful wrinkles. Typical failure modes were analyzed.
X.S. Wang1，S.J. Yuan1，Y.X. Yao2，X.R. Huang1，Z.R. Wang1
(1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China)
Abstract:The tube hydroforming process for manufacturing the tubular part with large perimeter difference was studied by means of experiments and FE simulation. It is an asymmetrical one and the expansion ratio is 70 percent. The part is successfully hydroformed by applying the useful wrinkles to accumulate suffcient metal in the area with large expansion ratio. The thickness distribution is analyzed, and the maximum thinning ratio of the part is 21.6 percent. It is shown from the experiment and simulation results that the tubular part with large perimeter difference, long expansion area and asymmetrical shape can be obtained in one step, applying the useful wrinkles. Typical failure modes were analyzed.
Key words:Hydroforming; Large expansion; Useful wrinkle; Asymmetrical part;
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