Computational modeling of porous shape memory alloys

被引：76
|
作者：
Panico, M. [1 ]
Brinson, L. C. [1 ,2 ]
机构：
[1] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
来源：
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2008年 / 45卷 / 21期
基金：
美国国家科学基金会;
关键词：
Phase transformation; Shape memory alloys; Simulations; Porous materials; Cyclic loading;
D O I：
10.1016/j.ijsolstr.2008.06.005
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this study the mesoscopic behavior of porous shape memory alloys has been simulated with particular attention to the mechanical response under cyclic loading conditions. A recently developed constitutive law, accounting for full martensite reorientation as well as phase transformation, was implemented into the commercial finite element code ABAQUS. Due to stress concentrations in a porous microstructure, the constitutive law was enhanced to account for the development of permanent inelasticity in the shape memory matrix. With this simulation method, the complex interaction between porosity, local phase transformation and macroscale response has been evaluated. The results have implications for use of porous SMAs in biomedical and structural applications. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5613 / 5626
页数：14
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