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摘要：
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利用UG软件对翼子板进行了三维建模,运用有限元软件AUTOFORM模拟了板料拉深成形过程。模拟结果显示产生了板料堆积等缺陷,与实际生产情况基本吻合,表明模拟的准确性。进一步分析发现缺陷的形成为局部金属流动受阻所致,提出了增大圆角半径和提高工艺补充部分高度的方法,实现了模具结构的优化。工艺试验表明,模具结构优化合理,消除了缺陷,保证了产品质量。
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The three-dimension model for front fender was set up by the UG software. The draw forming process of the sheet material was simulated by the finite element software AUTOFORM. The simulation results show that there are wrinkling defects. It is consistent well with the actual production. Therefore, the simulation is accuracy. Further analyses reveal that the defects are formed because of local metal flow retardant. The measure that increased fillet radius and improved addendum height was brought forward. The optimal parameters of die-structure were obtained. The process tests show that die-structure optimization is reasonable, which eliminates the defects and ensures quality of products.
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基金项目：
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安徽省青年教师资助项目(2008jq1027)
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作者简介：
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参考文献：
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[1]Taylor L,Cao J,Karafillis A P,et al.Numerical si mulation of sheet-metal forming[J].Journal of Materials Processing Technology,1995,(50):168-172.
[2]Zhoua D,Wagonera R H.Development and application of sheet-forming si mulation[J].Journal of Materials Processing Technology,1995,(50):1-16.
[3]赵侠,李飞.汽车发动机罩外板拉深成形的数值模拟[J].锻压技术,2007,32(5):50-53.
[4]汪祥支,苏超,周锐,等.汽车保险杠拉深成形数值分析与工艺优化[J].锻压技术,2008,33(1):45-46.
[5]张士宏,程幸叶,唐杰.汽车覆盖件成形拉深筋的有限元模拟与优化[J].锻压技术,2008,33(6):140-143.
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