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Finite element modeling of shell wrinkling in impulse drawing of thin sheet metal

机译：薄板脉冲冲制中壳体起皱的有限元建模

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Wrinkling of workpiece is one of the major problems occurring at application of impulse drawing of thin sheet metal. The loss of shell stability appears in the areas with compressive stresses and is basis of buckling phenomenon. The nonlinear explicit finite element code LS-DYNA was used for prediction wrinkling. Pulse pressure and strain hardening of a material were given from experiment. The modeling of shell such as Belytschko-Wong has given the good consent of results of finite element simulation of sheet metal forming process with experimental data at electrohydraulic thin brass drawing.
机译：工件的起皱是在薄金属薄板的脉冲拉拔应用中出现的主要问题之一。壳体稳定性的损失出现在具有压应力的区域，并且是屈曲现象的基础。使用非线性显式有限元代码LS-DYNA进行预测起皱。通过实验给出了材料的脉冲压力和应变硬化。诸如Belytschko-Wong之类的壳体建模已充分证明了钣金成形过程的有限元模拟结果与电动液压薄黄铜拉拔实验数据的吻合。

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