非轴对称盒形件拉延初期凸缘部分变形的有限元分析

Analysis of Flange Behaviour of Non-Axisymmetric Deep Drawing in Intial Stage by Finite Element Method

摘要: 本文利用弹塑性有限元法分析计算了非轴对称件拉延初期凸缘部分的变形,得到了主应力指向,金属流动规律,塑性区的扩展和应力应变分布。为了验证有限元计算,将所得结果与密栅实验进行了比较,取得了一致的规律性。

Abstract: The flange deformation of non-axisymmetric deep drawing in the initial stage is analyzed using finite element method. The direction of principle stress, metal flow behaviour, the spread of plastic zone, and the stress or strain distribution are thus obtained. A comparison has been made between the results by finite element method and that of experiments for aluminum sheet (including moire), showing good agreement.