一个新的形状记忆合金模型

朱祎国; 吕和祥; 杨大智

一个新的形状记忆合金模型

1.
大连理工大学, 工程力学系, 大连, 116023;
2.
大连理工大学材料工程系, 大连, 116023

基金项目: 国家自然科学基金资助项目(59731030)

详细信息

作者简介:
朱祎国(1972- ),男,博士.(E-mail:zhuyiguo@sina.com).

中图分类号: TB381
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2000-11-28
- 修回日期: 2002-03-22
- 刊出日期: 2002-09-15

A New Model of Shape Memory Alloys

1.
Department of Mechanical Engineering, Dalian University of Technology, Dalian 116023, P. R. China;
2.
Department of Material Engineering, Dalian University of Technology, Dalian 116023, P. R. China

摘要

摘要: 借助于Tanaka用一维形核动力学方程导出的指数形式的相变百分数,建立了一个新的形状记忆合金本构模型.提出了不同相变条件下的可恢复形状记忆应变的表达式;考虑了材料在变形过程中马氏体的重定向作用;克服了Tanaka系列模型不能描述当材料为完全马氏体状态时的力学行为的缺点.本模型较现有的形状记忆合金本构模型均简单,便于应用,实验证明了模型的正确性.
- 形状记忆 /
- 本构模型 /
- 伪弹性
Abstract: A new constitutive model of shape memory alloys (SMAs) based on Tanaka's martensite fraction exponential expression is produced. This new model can present recoverable shape memory strain during different phase transformation, and reflect the action of martensite reorientation. Also it can overcome the defect of Tanaka's Model when the SMAs. microstructure is fully martensite. The model is very simple and suitable for using, and the correct behavior of the model is proved by test.
- shape memory /
- constitutive model /
- pseudoelasticity

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参考文献(11)

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