摘要
基于Lagoudas唯象本构关系模型,利用ABAQUS软件二次开发功能,编写出可用于描述形状记忆合金(SMA)特性的UMAT材料子程序,并对SMA三维鼓包结构的热力学特性进行了有限元分析。结果表明:该子程序能够较好地描述SMA的超弹性和形状记忆效应特性;SMA三维鼓包结构能够产生较大的竖向挠度变形,并且鼓包大部分区域完成了马氏体逆相变,只在边界附近残留有部分马氏体相。
The user material subroutine （UMAT） based on the Lagoudas model was compiled to describe its unique material features of the shape memory alloy （SMA） by using the redevelop technology of the ABAQUS software, and the finite element simulation of thermodynamic property of SMA bump structure was analyzed. The results show that the UMAT can accurately describe the features such as pseudoelasticity and shape memory effect; the bump can undergo large vertical deflection, and most of the area completed the martensitic reverse transformation while only the near of border remained martensite phase.
出处
《机械工程材料》
CAS
CSCD
北大核心
2014年第3期96-101,共6页
Materials For Mechanical Engineering
基金
国家自然科学基金重点资助项目(50830201)
长江学者和创新团队发展计划资助项目(IRT0968)
关键词
形状记忆合金
本构关系模型
有限元
shape memory alloy（SMA）
constitutive model
finite element
