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摘要：
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对 NUMISHEET99圆柱杯深拉延——反向深拉延标准考题 ( Benchmark- C) ,进行了有限元数值仿真 ,将计算结果与 Kim Hyung jong的实验结果做了比较。在此基础上 ,分析了第一次拉延过程的工艺参数——压边间隙对后续工序成形质量的影响 ,指出第一次成形的压边间隙在 1.6～1.8mm之间时 ,第二次成形的变形余裕度最大 ,即成形质量最好。研究说明 ,开展多工序成形过程的数值仿真有着重要的意义
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The objective of this paper is to study the formability of sheet metal in multi\|step pressing The Benchmark\|C of NUMISHEET99 has been simulated as an example Numerical results have been compared with experimental results made by Kim Hyung jong The influence of the blankholding gap in first deep drawing on the formability of the second reverse deep drawing has been investigated The work presented here indicates the significance of simulating the whole process of multi\|step forming
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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 D Zhou,R H Wagoner.Development and application of sheet-forming simulation.Journal of Material Processing Technology,1995 (5 0 ) :1～ 16
2 钟志华 ,李光耀 .薄板冲压成形过程的计算机仿真与应用 .北京 :北京理工大学出版社 ,1998.
3 Proceedings of NUMISHEET99,The 4th International Conferenceand Workshop on Numerical Simulation of 3D Sheet FormingProcesses,13～ 17September 1999,Besancon,France.
4 F Barlat.J Lian.Plastic Behavior and Strechability of SheetMetals.Part I:A Yield Function for Orthotropic Sheets underPlane Stress Conditions.International Journal of Plasticity,1989(5 ) :5 1～ 6 6
5 杨玉英 .大型薄板成形技术 .北京 :国防工业出版社 ,1996
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