| Piecewise Linear Analysis for Pseudo-elasticity of Shape Memory Alloy （SMA） |
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| 引用本文： | 五晓东,杜晓伟,孙国钧.Piecewise Linear Analysis for Pseudo-elasticity of Shape Memory Alloy （SMA）[J].上海交通大学学报(英文版),2005,10(1):48-51. |
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| 作者姓名： | 五晓东 杜晓伟 孙国钧 |
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| 作者单位： | Dept.otEng.Mechanics,ShanghaiJiaotongUniv.,Shanghai200030,China |
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| 基金项目： | National Natural Science Foundation ofChina(No.5 973 10 3 0 ) |
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| 摘 要： | Based on the Brinson constitutive model of SMA, a piecewise linear model for the hysteresis loop of pseudo-elasticity is proposed and applied in the analysis of responses of an SMA-spring-mass system under initial velocity activation. The histories of displacement and velocity of the mass, and the response of stress of SMA are calculated with Brinson‘s model and the piecewise linear model. The difference of results of the two models is not significant. The calculation with piecewise-linear model needs no iteration and is highly efficient.
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| 关 键 词： | 形状记忆合金 伪弹性 分段线性模型 本构定律 |
Piecewise Linear Analysis for Pseudo-elasticity of Shape Memory Alloy (SMA) |
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| WANG Xiao-dong,DU Xiao-wei,SUN Guo-jun.Piecewise Linear Analysis for Pseudo-elasticity of Shape Memory Alloy (SMA)[J].Journal of Shanghai Jiaotong university,2005,10(1):48-51. |
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| Authors: | WANG Xiao-dong DU Xiao-wei SUN Guo-jun |
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| Institution: | Dept.of Eng.Mechanics,Shanghai Jiaotong Univ.,Shanghai 200030,China |
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| Abstract: | Based on the Brinson constitutive model of SMA, a piecewise linear model for the hysteresis loop of pseudo-elasticity is proposed and applied in the analysis of responses of an SMA-spring-mass system under initial velocity activation. The histories of displacement and velocity of the mass, and the response of stress of SMA are calculated with Brinson's model and the piecewise linear model. The difference of results of the two models is not significant. The calculation with piecewise-linear model needs no iteration and is highly efficient. |
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| Keywords: | shape memory alloy(SMA) pseudo-elasticity piecewise linear model Brinson's constitutive law |
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