The design of drawing process for automobile panel is called as design "black box"in sheet metal forming domain, while the die-face design of drawing die is the key part.
汽车覆盖件拉延工序设计被称为薄板冲压成形领域的设计“黑箱”问题，而拉延模型面设计是其中的核心内容。
And the forming process of a automobile skeleton part of sheet metal is simulated by using the non-linear FEM software SHEET-FORMING. Some problems in forming process are also analyzed here.
并运用非线性有限元软件包SHEET FORMING对某汽车骨架零件进行冲压数值模拟，分析了可能出现的问题。
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