A macroscopic constitutive model of shape memory alloy considering plasticity
作者： Bo Zhou
DOI: 10.1016/J.MECHMAT.2012.02.001
关键词: Constitutive equation 、 Transformation equation 、 Plasticity 、 SMA* 、 Mechanics 、 Shape-memory alloy 、 Transformation (function) 、 Composite material 、 Phase (matter) 、 Materials science 、 Constraint algorithm
摘要: Abstract This paper presents a macroscopic constitutive model which is able to reproduce the thermo-mechanical behaviors of super-elastic SMA undergoing plastic strain. A mechanical equation, predicts stress–strain response strain, developed based on expression Gibbs free energy with linear constraint equation supposed describe effect plasticity phase transformation SMA. sine-type established The and together compose presented reproduces Especially all material constants related can be determined through experiments. Therefore it easy use this for practical applications supper-elastic strain are numerically simulated by model. Results show that effectively express plasticity.
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