Simulation of pseudoelastic behaviour of SMA under cyclic loading

被引：25

作者：

Sun, S ^{[1
]}

Rajapakse, RKND ^{[1
]}

机构：

[1] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2003年 / 28卷 / 3-4期

关键词：

pseudoelasticity; shape memory alloys; cyclic loading; damping; dynamic response; vibration control;

D O I：

10.1016/j.commatsci.2003.08.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple modification to an existing constitutive model for SMA materials is proposed to include the effects of loading frequency. The proposed model is based on the behaviour of experimental results of SMA wires subjected to cyclic strains. Numerical simulations based on the modified constitutive model show good qualitative agreement with experimental results. The influence of loading frequency, temperature, static strain offset and strain amplitude on pseudoelastic hysteresis loops and energy dissipation is studied. Dynamic response of a single degree of freedom system with an SMA element is examined by using the modified constitutive model and Newmark's time integration method. Basic features of the displacement and SMA element stress time histories are studied. The frequency-response curve of a SDOF is investigated. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：663 / 674

页数：12

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