基于ANSYS/LS-DYNA的杯形件椭圆角凸模拉深模拟

Deep-drawing simulation of elliptic punch shoulder for cup based on ANSYS/LS-DYNA

杯形件底部形状一般都设计成圆角过渡,这从加工性方面或许是比较方便的。然而,在拉深过程中,抵抗产生拉深缺陷的能力却并非是最理想的。研究带凸缘的杯形件,建立凸模直边与底部相连为椭圆角的有限元模型,用ANSYS/LS-DYNA进行杯形件拉深模拟,模拟结果与凸模直边与底部相连为圆角的杯形件比较,椭圆角凸模比圆角凸模的板料拉深成形能力有一定的提高。

Bottom of cup form is designed as circular bead so that process ability is convenience . But the resistance ability to defect in deep‐drawing is not ideal . An elliptic/radius punch shoulder for deep drawing were set up on study cup with flange ,and then two processes to form cup were simulated respectively by ANSYS/LS‐DYNA .It is shown that this forming ability by elliptic punch shoulder is better than that by radius punch shoulder .