Transactions of Materials and Heat Treatment

Title：Numerical simulation on wrinkle of saddle surface in the multi-point forming with force-displacement separated control

Authors： Wang Weiwei Li Ying Jia Binbin

Unit： Harbin Institute of Technology(Weihai)

KeyWords： saddle surface force-displacement separated control wrinkle numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2015,40(5):22-27

Abstract：

In multi-point forming, wrinkle is an important effect on the quality of sheet metal forming. For wrinkles on the saddle surface caused in the multi-point forming under force-displacement separated control, the forming process of the saddle surface was simulated based on ABAQUS simulation platform, and wrinkles on the saddle surface were analyzed. The results show that when the thickness is at 1 or 1.5 mm, wrinkling in the central area of the sheet is serious, and more obvious in the direction of a prior deformation. Wrinkling of the saddle surface reduces with the increase of thickness and curvature radius. The cause of wrinkling was ascertained based on wrinkle phenomenon and the control methods of wrinkling were proposed. By simulation and forming experiment, the results show that increasing forming force and staggering matrix elements can inhibit wrinkling, and staggering matrix elements combined with increasing forming force can improve the quality of forming significantly.

Funds：

国家自然科学基金资助项目（51175109）

王卫卫（1958-），男，硕士，教授

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