有限元反向法计算筒形件毛料形状

Blank calculation for sheet metal forming of a cylindrical part by finite element inverse approach

合理地选择冲压件的毛料外形 ,可以提高板料的可成形性 ,同时也可以提高材料利用率。选用反向法来计算冲压件的毛料外形 ,开发了独立的有限元源程序 ,并提出了一种简单的求解毛料初步解方法。通过例子证明 ,该算法计算的结果与实际情况比较吻合 ,而且程序比较稳定 。

Select blank reasonably can mainly improve sheet formability,make full use of original material and reduce the amount of subsequent work.Inverse Approach has been selected to calculate the blank shape and independent finite element program has been developed.A stable and simple method has been proposed to get an initial value of blank shape.Finally,one example has been given whose results fit well with the fact.The program is stable and can obtain the blank shape with good precision rapidly.