材料模型和强化规律对空拔管拔制力和尺寸精度的影响  

The Influences of Models Material and Law of Strain Hardening to Drawing Forces and Precision of Tube

作　　者：叶金铎[1] 吴风海 叶航[3] 

机构地区：[1]天津理工大学机械工程学院,天津300191 [2]天津梦乡软体家具有限公司,天津300402 [3]扎努西电气机械天津压缩机有限公司,天津300171

出　　处：《装备制造技术》2007年第3期1-4,10,共5页Equipment Manufacturing Technology

基　　金：天津市自然科学重点基金资助项目(023801011)

摘　　要：采用多重非线性有限元法,研究了四种材料模型即理想塑性,线性强化(两种不同的强化参数)真实材料曲线和两种强化理论(等向强化和随动强化)对弧型模空拔管拔制力和脱模后钢管尺寸精度的影响。数值计算结果表明:材料曲线和强化规律均对拔制力和钢管的尺寸精度有重要的影响。Influences of both the models of material and the law of hardening to the drawing forces and precision of the tube are studied by the method of nonlinear finite element method. Four kinds of models of material and two kinds of law of hardening are considered in the study. Numerical results have showed that both the models of material and the law of hardening have the important influences to the drawing forces and precision of the tube.

关 键 词：材料模型 强化规律 新型孤型模 拔制力 尺寸精度 

分 类 号：TB115[理学—数学]