Constitutive modeling of multi-stimuli-responsive shape memory polymers with multi-functional capabilities

Baniasadi, M., Yarali, E., Bodaghi, M. ORCID: 0000-0002-0707-944X, Zolfagharian, A. and Baghani, M., 2021. Constitutive modeling of multi-stimuli-responsive shape memory polymers with multi-functional capabilities. International Journal of Mechanical Sciences, 192: 106082. ISSN 0020-7403

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Nowadays, shape memory polymers (SMPs)-based devices are required to be much smarter to produce large shape memory recovery and recovery force with lower working temperatures. They could play a vital role in the advancement of soft robot manipulators, biomedical tools and wearable devices where the working temperatures is a key challenge and must be around the body temperature, or in sustainable smart systems with low energy consumption. The aim of this paper is to introduce thermo-electro-magneto-responsive fibrous SMPs (TEMFSMPs) as a new class of SMPs with highly enhanced shape recovery and recovery force and reduced working temperature. A three-dimensional constitutive model is developed to simulate thermo-electro-magneto-visco-hyperelastic behaviors of SMPs under large deformation for the first time. Constitutive relations are derived by adopting an electro-magneto-visco-hyperelasticity theory and implementing it in a thermo-mechanical cycle of SMPs. To improve the strength of thermo-electro-magneto-responsive SMPs, a bunch of fibers is also embedded into the SMP matrix. Then, the proposed model for thermo-electro-magneto-responsive fibrous shape memory polymers (TEMFSMPs) under uniaxial tension and complex loading regimes such as simultaneous torsion and extension are solved semi-analytically. In addition, the thermo-mechanical response through the proposed model is validated via available SMP experimental tests. Numerical results reveal that electro-magnetic features can significantly enhance shape memory recovery and recovery force of TEMFSMPs and lower their working temperatures. It is found that the electro-magnetic field, the orientation, and stiffness of fibers can effectively be set to tune the shape memory effect and bio-applicability of TEMFSMPs with highly enhanced stress/strain recovery and reduced working temperature.

Item Type: Journal article
Alternative Title: Modeling multi-stimuli-responsive shape memory polymers with reduced working temperature
Publication Title: International Journal of Mechanical Sciences
Creators: Baniasadi, M., Yarali, E., Bodaghi, M., Zolfagharian, A. and Baghani, M.
Publisher: Elsevier
Date: 15 February 2021
Volume: 192
ISSN: 0020-7403
S0020740320318245Publisher Item Identifier
Divisions: Schools > School of Science and Technology
Record created by: Jonathan Gallacher
Date Added: 25 Sep 2020 09:53
Last Modified: 20 Sep 2021 03:00

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