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Structural Design of Door Assembly to Apply Tailor Welded Blanks Technique  

황우석 (대구대학교 자동차·산업·기계공학부)
이덕영 (대구대학교 자동차·산업·기계공학부)
하명수 (명신산업(주))
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.2, 2002 , pp. 228-233 More about this Journal
Abstract
TWB(Tailor Welded Blanks) is one of the recent techniques to reduce the weight and cost of the body members. To apply the TWB technique, we must decide the position of the welding line and the thickness of the welded blanks. Although many researchers have tried to check the formability of welded blanks, there are not so many researches from the structural point of view. In this paper, the TWB technique is applied to combine the door inner panel and the hinge face panel into one piece. The finite element structural analysis of the door assembly leads to the final design of the tailor welded door inner panel, which shows the mass reduction of 1.08kg without the sacrifice of the structural stiffness. The structural stiffness analysis includes the frame stiffness analysis, the belt line stiffness analysis, the door sagging analysis and the vibration analysis.
Keywords
Tailor welded blank; Finite element analysis; Door assembly; Door sagging;
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