• CN:11-2187/TH
  • ISSN:0577-6686

›› 2001, Vol. 37 ›› Issue (9): 75-79.

• 论文 • 上一篇    下一篇

圆杯无压边锥模拉深皱曲强度与拉深极限预测

熊志卿   

  1. 南京工程学院机械系
  • 发布日期:2001-09-15

PREDICTIONGS ON WRINKLING STRENGTH AND LIMITING DRAWING RATION FOR CUP DEEP-DRAWING WITHOUT BOLANKHOLDER THROUGH A CONICAL DIE

Xiong Zhiqing   

  1. Nanjing Institute of Tenhnology
  • Published:2001-09-15

摘要: 采用能量法导出圆杯无压边锥模拉深的皱曲强度,考虑了材料性能,径向和周向弯曲作用,厚度变化及加工硬化效应。应用该强度预测无皱极限拉深化,与Sowerby等人使用3种材料3种板厚作的无压边锥模拉深试验结果完全一致,最大相对误差不超过8%。提出的研究方法同样适用于轴对称非直壁零件拉深凸凹模间悬空区的切向压缩失稳分析。

关键词: 拉深, 失稳, 弯曲, 皱曲, 体素化 距离场 速度场 异构信息 模型融合

Abstract: The wrinkling strength of shell in cup deep-drawing process without blankholder through a conical die is deduced by using the well-known energy method. The formula mirrors the effect of material properties, radial and circumferential bending, varying thickness and work-hardening on the wrinkling strength. Predicted limiting drawing ratios without wrinkling on the basis of the strength are completely in agreement with the experimental results of cup deep-drawing without blankholder through a conical die, which are obtained by Sowerby et al. Who used three metals in three different sheet thicknesses. Their maximum relative error is not more than eight percent. The study method is also suited to analyze cirumferential compressive instability in the area of hanging in the air between punch and die for axisymmetrical no-straight wall parts.

Key words: Bending, Deep-drawing, Instability, Wrinkling, Voxelization Distance field Velocity field Heterogeneous information Model fusion

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