Transactions of Materials and Heat Treatment

Title：Numerical simulation of hydro-forming of tailor welded blanks

Authors： WANG Jian-min1 ZHAO Yan1 JIANG Yin-fang2 WU Li-bo2 CHEN Dian-jian1(1.School of Material Science and Engineering Jiangsu University Zhenjiang 212013 China 2.School of Mechanical Engineering Jiangsu University Zhenjiang 212013 China)〗KH+2mmD〗

Unit：

KeyWords： tailor-welded blanks hydro-forming numerical simulation weld-line movement

ClassificationCode：TG386

year,vol(issue):pagenumber：2007,32(2):28-32

Abstract：

Due to the requirements to save the energy and to reduce the tail gas in automobile,making good use of forming technologies in the tailor-welded blanks(TWBs) becomes more and more important.The tailor-welded blanks with different thickness drawn into square cup were taken as an example and the hydro-forming drawing process was numerically simulated with sheet forming software DYNAFORM by contrast to conventional drawing.The conclusions show that different tendencies of weld-line movement occur in different positions of square cups,and the maximal weld-line movement occurs in the bottom center during the conventional drawing while it occurs in the jamb wall during the hydro-forming.Meanwhile,high-grade products with small weld-line movement and small reduction in slab thickness can be gained when the oil pressure is increased.

Funds：

江苏省高校自然科学基金资助项目(05KJD460044)

Reference：

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