A three-dimensional constitutive equation and finite element method implementation for shape memory polymers

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

9 Scopus Citations
View graph of relations



Original languageEnglish
Pages (from-to)339-358
Journal / PublicationCMES - Computer Modeling in Engineering and Sciences
Issue number5
Publication statusPublished - 2013


In order to describe the thermomechanical deformation and shape memory effect of shape memory polymers (SMPs), a three-dimensional thermomechanical constitutive model that considers elastic, viscoelastic strain and thermal expansion is proposed for isotropic SMPs. A three-dimensional finite element procedure is developed by implementing the proposed constitutive model into the user material subroutine (UMAT) in ABAQUS program. Numerical examples are used to compare it with existing experimental data in a one dimensional case and to demonstrate the thermomechanical behavior of SMPs with 3D deformation. It is shown that the present constitutive theory and the finite element method can effectively simulate the thermomechanical behavior and shape memory effect of SMPs under complicated deformation states. Copyright © 2013 Tech Science Press.

Research Area(s)

  • Constitutive model, Shape memory polymer, Thermomechanics, Viscoelasticity