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Finite strain 3D thermoviscoelastic constitutive model for shape memory polymers
Author(s) -
Diani Julie,
Liu Yiping,
Gall Ken
Publication year - 2006
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20497
Subject(s) - materials science , shape memory polymer , constitutive equation , deformation (meteorology) , polymer , composite material , viscoelasticity , finite strain theory , shape memory alloy , strain (injury) , interpretation (philosophy) , stress (linguistics) , mechanics , finite element method , structural engineering , computer science , physics , engineering , medicine , linguistics , philosophy , programming language
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.