Finite element analysis of pseudoelastic behavior of NiTi shape memory alloy with thin-wall tube under extension-torsion loading

被引：0
作者：
X. M. Wang
M. Frotscher
Y. F. Wang
Z. F. Yue
机构：
[1] Northwestern Polytechnical University,School of Mechanics, Civil Engineering and Architecture
[2] Institute of Materials,undefined
[3] Ruhr University,undefined
来源：
Journal of Materials Science | 2007年 / 42卷
关键词：
Austenite; Martensite; Shear Strain; Shape Memory Alloy; NiTi Alloy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A three-dimensional micromechanical model for pseudoelasticity is implemented into ABAQUS to study the mechanical behavior of a polycrystalline NiTi shape memory alloy under biaxial loading. The model is firstly validated by numerical method and then used to simulate a thin-wall tube under non-proportional extension-torsion loading. When the tensile strain remains constant, the tensile stress decreases with increasing of the shear strain. While unloading the shear strain, the tensile stress increases. This is consistent with experimental results. The model can be used to get an idea of the pseudoelastic behavior of NiTi alloys under complex stress states.
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页码：2443 / 2449
页数：6
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