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

X. M. Wang, M. Frotscher, Y. F. Wang, Z. F. Yue

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

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.

源语言英语
页(从-至)2443-2449
页数7
期刊Journal of Materials Science
42
7
DOI
出版状态已出版 - 4月 2007

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