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摘要：
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基于变形余裕度的冲压板材成形选择理论,给出变形余裕度的冲压板材成形选择过程。研究了变形余裕度的冲压板材成形选择评价方法,并以某汽车后轮罩拉深件为例,对其长边直壁部分进行变形余裕度和平面应变破裂评价,绘出其伸长变形分布和应力分布图。结合板材应变目标样本,给出了具体实例破裂力的实验值与理论值比较结果。
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According to the choice theory of sheet cutting shape based on deforming ample degree,the choice process of sheet cutting shape based on deforming ample degree was given.The choice evaluation of sheet cutting shape based on deforming ample degree was studied.The plane strain cracking and deforming ample degree showed on the long side straight-wall were evaluated,using one truck back-wheel cover drawing as an example.Distribution of elongation transform and stress was given.Combined with the goal specimen of sheet strain,compared values of experiment and theory for the given example's cracking force were presented.
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基金项目：
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作者简介：
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参考文献：
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[1]《现代模具技术》编委会.汽车覆盖件模具设计与制造[M].北京:国防工业出版社,1998.
[2]李硕本.冲压工艺学[M].北京:机械工业出版社,1993.
[3]孙成智.各项异性屈服准则对铝合金板成形预测精度的影响[J].塑性工程学报,2004,11(3):60-61.
[4]郭春生.汽车大型覆盖件模具[M].北京:国防工业出版社,1993.
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