[1]陈鑫,李爱群,左晓宝.超弹性形状记忆合金简化多维本构模型[J].东南大学学报(自然科学版),2009,39(4):813-818.[doi:10.3969/j.issn.1001-0505.2009.04.032]
 Chen Xin,Li Aiqun,Zuo Xiaobao.Simplified multidimensional constitutive model of super-elasticity shape memory alloy[J].Journal of Southeast University (Natural Science Edition),2009,39(4):813-818.[doi:10.3969/j.issn.1001-0505.2009.04.032]
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超弹性形状记忆合金简化多维本构模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第4期
页码:
813-818
栏目:
材料科学与工程
出版日期:
2009-07-20

文章信息/Info

Title:
Simplified multidimensional constitutive model of super-elasticity shape memory alloy
作者:
陈鑫1 李爱群1 左晓宝2
1 东南大学土木工程学院, 南京 210096; 2 南京理工大学土木工程系, 南京 210094
Author(s):
Chen Xin1 Li Aiqun1 Zuo Xiaobao2
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
关键词:
形状记忆合金 超弹性 多维本构模型
Keywords:
shape memory alloy super-elasticity multidimensional constitutive model
分类号:
TB381;TU313.2
DOI:
10.3969/j.issn.1001-0505.2009.04.032
摘要:
建立简单有效的多维本构模型是形状记忆合金(SMA)工程应用的关键问题之一.在NiTi形状记忆合金丝拉伸实验的基础上,根据Brison模型的相变动力学方程,得出了相变应力与加载条件的关系. 借助线性化方法,建立了SMA超弹性简化一维本构模型; 基于塑性理论,将马氏体体积分数作为状态变量之一,推导了SMA超弹性简化多维本构模型,应用该模型对超弹性SMA进行了数值模拟,并与实验结果进行了比较.分析结果表明:理论模型曲线与实验曲线接近,理论模型能够较为准确地模拟形状记忆合金的屈服机制和耗能能力.该本构模型可以用于模拟复杂荷载条件下的SMA超弹性特性.
Abstract:
In the field of engineering application of shape memory alloy(SMA), it is one of the key factors to establish a simple and useful multidimensional constitutive model. On the basis of the experimental results of NiTi shape memory alloy wires, and according to the martensitic transformation kinetic equations of Brison’s model, the relationship between transformation stresses and loading conditions was obtained. By means of linear method, a super-elastic simplified one-dimensional constitutive model of SMA was established. Considering martensitic volume fraction as one of the state variables, a super-elastic simplified multidimensional constitutive model of SMA was deduced from plasticity theory. Then the model was used to simulate the behaviors of super-elastic SMA and the results were compared with the experimental results. It is shown that the curves of the theory model are similar to the experimental ones, and this model is able to simulate the yield mechanism and energy dissipation capacity of SMA correctly. The results indicate that this model can simulate the properties of super-elasticity SMA under complex load conditions.

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备注/Memo

备注/Memo:
作者简介: 陈鑫(1983—),男,博士生; 李爱群(联系人),男,博士,教授,博士生导师,aiqunli@seu.edu.cn.
基金项目: 国家“十一五”科技支撑计划资助项目(2006BAJ03A04).
引文格式: 陈鑫,李爱群,左晓宝.超弹性形状记忆合金简化多维本构模型[J].东南大学学报:自然科学版,2009,39(4):813-818.[doi:10.3969/j.issn.1001-0505.2009.04.032]
更新日期/Last Update: 2009-07-20