Transactions of Materials and Heat Treatment

Title：Simulation analysis on blank holder force for aluminum alloy cylinder in

Authors： Wang Wangbing Liu Ji Liu Song Wang Xu Chen Xinhao Wu Ming

Unit： Liaoning Shihua University Wuxi Turbine Blade Co. Ltd.

KeyWords： Deform-3D punching-forging aluminum alloy cylinder numerical simulation blank holder force gap between blank holder and die

ClassificationCode：TG386.41

year,vol(issue):pagenumber：2019,44(3):1-9

Abstract：

The effect of blank holder, the gap between blank holder and die, and the variation of maximum blank holder force during punching-forging of aluminium alloy sheets were studied. The Deform-3D software was used for numerical simulation to prevent the problems of cracking, high and low sides on mouth and lugs affecting the quality during the punching-forging process of the aluminum alloy cylinder. Then, under the different gaps between the blank holder and the die, the blank holder force curve, load-stroke curve, equivalent strain value and damage value were calculated, and the final forming quality at different gaps was compared. The simulation shows that the wrinkling is avoided by the blank holder device during the punching-forging process of sheet metal. When the gap between the blank holder and the die is equal to or less than 3.3 mm, the sheet is pulled apart due to excessive blank holder force. However, when the gap between them is greater than 3.3 mm, the maximum value of the blank holder force decreases with the increase of the gap, the pressure of the convex die corresponding to the maximum blank holder force also decreases, and the force required for the final forming increases. Thus, the optimal gap between the blank holder and the die is determined to be 3.6 mm.

Funds：

国家自然科学基金资助项目（51574147，51790481）；辽宁省自然科学基金资助项目（201602474）

作者简介：王旺兵（1993-），男，硕士研究生 E-mail：2279539707@qq.com；通讯作者：王旭（1979-），男，博士，副教授 E-mail：wangxu@lnpu.edu.cn

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