English

应用科学学报 ›› 1997, Vol. 15 ›› Issue (4): 379-384.

• 论文 •    下一篇

金属热变形应力-应变曲线数学模型的研究与应用

许勇顺, 柳建韬, 聂明, 李自刚, 阮雪榆   

  1. 上海交通大学国家模具CAD研究工程中心
  • 收稿日期:1996-11-10 修回日期:1997-01-15 出版日期:1997-12-31 发布日期:1997-12-31
  • 作者简介:许勇顺:讲师,上海交通大学塑性成形工程系,上海 200030
  • 基金资助:
    国家自然科学基金

RESEARCH AND APPLICATION OF MATHEMATICAL MODEL FOR HOT FORMING STRESS-STRAIN CURVE

XU YONG SHUN, LIU JIANTAO, NIE MING, LI ZHIGANG, RUAN XUEYU   

  1. National Mold/Die CAD Enginerring Research Center Dept of Plasticity Engng Shanghai Jiao Tong University, Shanghai 200030
  • Received:1996-11-10 Revised:1997-01-15 Online:1997-12-31 Published:1997-12-31

PDF

182

被引次数

93

摘要： 该文较全面地分析了国内外关于金属热变形应力-应变曲线的各种数学模型,对两种类型的热变形应力-应变曲线,即动态回复型和动态再结晶型曲线进行了讨论.通过对35CrNi3MoVA钢的热变形过程的详细研究,首次提出了一种新的适合于工程应用的真实应力-应变曲线的数学模型:σ=Aεaεbexp[-(cT+dε)],该模型为计算变形力和进一步实现控制锻造提供了很有价值的参考依据.

关键词: 应力-应变曲线, 控制锻造技术, 热/力模拟

Abstract: Two types of mathematical models for hot forming stress-strain curve in metal are analysed in this paper. Through a detailed investigation on hot forming processing, a new model for true stress-strain curve, quite suitable for engingeering application, is put forward:σ=Aεaεbexp[-(cT+dε)], It provides a useful referential foundation for realizing the controlled forging technology in steel.

Key words: stress-strain curve, controlled forging technology, thermal/mechanicalsimulation