锻压技术

NiTi形状记忆合金的本构关系及有限元模拟研究进展

英文标题：Research progress on constitutive models and finite element analysis of NiTi shape memory alloy

作者：曾攀杜泓飞

单位：清华大学

分类号：TB331

出版年,卷(期):页码：2011,36(1):1-6

摘要：

NiTi合金是目前记忆合金中研究最多和应用最广泛的一种，而描述NiTi形状记忆合金超弹性和记忆效应的本构模型及其有限元模拟技术是国内外研究的重点和难点。简要介绍了描述NiTi形状记忆合金超弹性的宏观唯象模型和细观力学模型这两种本构关系的研究进展。重点对近十年来NiTi记忆合金血管支架和管接头的有限元建模、分析及优化进行了评述。

NiTi alloy is one of the most widely used shape memory alloy. The research emphases and difficulties of NiTi shape memory alloy at home and abroad are the description of constitutive model for superelasticity and shape memory effect and its finite element modeling technology. The research progress on the macro-phenomenological and micromechanical constitutive model for superelasticity of NiTi shape memory alloy was generally reviewed. Specially, the finite element modeling, analysis and optimization of NiTi alloy stents and pipe connectors in the past decades were commented.

基金项目：

国家自然科学基金资助项目(10972114)

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