Finite strain 3D thermoviscoelastic constitutive model for shape memory polymers

作者：Julie Diani, Yiping Liu, Ken Gall · 发表于：Polymer Engineering and Science · 年份：2006 · DOI：10.1002/pen.20497 · 被引用次数：287 · 研究领域：Polymer composites and self-healing、Elasticity and Material Modeling、Shape Memory Alloy Transformations

Abstract A 3D thermoviscoelastic model is proposed to represent the thermomechanical behavior of shape memory polymers. The model is based on a physical understanding of the material behavior and a mechanical interpretation of the stress–strain–temperature changes observed during thermomechanical loading. The model is thermodynamically motivated and is formulated in a finite strain framework in order to account for large strain deformations. Model predictions capture critical features of shape memory polymer deformation and, in some cases, provide very favorable comparisons with experimental results. POLYM. ENG. SCI. 46:486–492, 2006. © 2006 Society of Plastics Engineers.