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Nonlinear finite element modelling of thermo-visco-plastic Styrene and Polyurethane shape memory polymer foams

Jarrah, Hamid Reza, Zolfagharian, Ali, Hedayati, Reza, Serjouei, Ahmad and Bodaghi, Mahdi 2021, Nonlinear finite element modelling of thermo-visco-plastic Styrene and Polyurethane shape memory polymer foams, Actuators, vol. 10, no. 3, doi: 10.3390/act10030046.

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Title Nonlinear finite element modelling of thermo-visco-plastic Styrene and Polyurethane shape memory polymer foams
Author(s) Jarrah, Hamid Reza
Zolfagharian, Ali
Hedayati, Reza
Serjouei, Ahmad
Bodaghi, Mahdi
Journal name Actuators
Volume number 10
Issue number 3
Article ID 46
Total pages 19
Publisher MDPI AG
Place of publication Basel, Switzerland
Publication date 2021-02-28
ISSN 2076-0825
Keyword(s) shape memory polymers
foams
thermo-visco-plastic
behavior
finite element modelling
large deformation
Summary This paper presents nonlinear finite element (FE) models to predict time- and temperature-dependent responses of shape memory polymer (SMP) foams in the large deformation regime. For the first time, an A SMP foam constitutive model is implemented in the ABAQUS FE package with the aid of a VUMAT subroutine to predict thermo-visco-plastic behaviors. A phenomenological constitutive model is reformulated adopting a multiplicative decomposition of the deformation gradient into thermal and mechanical parts considering visco-plastic SMP matrix and glass microsphere inclusions. The stress split scheme is considered by a Maxwell element in parallel with a hyper-elastic rubbery spring. The Eyring dashpot is used for modelling the isotropic resistance to the local molecular rearrangement such as chain rotation. A viscous flow rule is adopted to prescribe shear viscosity and stress. An evolution rule is also considered for the athermal shear strengths to simulate macroscopic post-yield strain-softening behavior. In order to validate the accuracy of the model as well as the solution procedure, the numerical results are compared to experimental responses of Styrene and Polyurethane SMP foams at different temperatures and under different strain rates. The results show that the introduced FE modelling procedure is capable of capturing the major phenomena observed in experiments such as elastic and elastic-plastic behaviors, softening plateau regime, and densification.
Language eng
DOI 10.3390/act10030046
Indigenous content off
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2021, The Authors
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30149217

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.