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摘要：
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通过模拟实验,对比研究了平砧镦粗和凹形坯料镦粗的变形规律,计算出应变场分布,绘制了凹形坯料镦粗的工艺控制曲线,可以推广到实际生产中去。
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Through the simulation test,the thesis studies the deforming rules in upsetting by comparing the normal process with a side-concave ingot upsetting,which gives the strain field for both processes.Firstly it plots the process curve for the side-concave ingot upsetting,which can be applied possibly in actual manufacture.
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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]陈森灿,何利东.改善核电筒体大锻件树枝晶偏析的模拟研究[J].锻压技术,1993,(1):9 12.
[2]陈森灿,杨宝森.大型锻件镦粗变形规律的综合研究[J].锻压技术,1991,(1):7 13.
[3]张志文.锻造工艺学[M].北京:机械工业出版社,1983.
[4]陈森灿,等.镦粗模拟试验中孔洞闭合规律与塑性有限元计算[J].模具技术,1987,(3):1 9.
[5]陈森灿,杨宝森.计算机在座标网格法处理大变形问题中的应用[J].模具技术,1990,(1):6 12.
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