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基于Autoform有限元软件,采用三工序工艺方案对前罩内板的冲压成形过程进行了数值模拟,预测了板料在拉延过程中的开裂及起皱等缺陷的产生,系统分析了拉延过程中坯料的减薄率、塑性变形及主次应变分布,并基于以上结果分析了破裂及起皱缺陷产生的原因。
Based on the Autoform finite element software, the three-step process scheme was used to simulate the stamping process of the inner panel of the front cover, and the defects such as cracking and wrinkling during the drawing process were predicted. The process of drawing process The reduction rate of the blank, plastic deformation and primary and secondary strain distribution, and based on the above analysis of the causes of rupture and wrinkle defects.