Modeling shape-memory behavior of dielectric elastomers
Institute of Soft Matter Mechanics, College of Mechanics and Materials, Hohai University Nanjing, Jiangsu, China
Received: 9 October 2015
Accepted: 18 April 2016
In this study, we present a constitutive model to couple the shape memory and dielectric behaviors of polymers. The model adopted multiple relaxation processes and temperature-dependent relaxation time to describe the glass transition behaviors. The model was applied to simulate the thermal-mechanical-electrical behaviors of the dielectric elastomer VHB 4905. We investigated the influence of deformation temperature, voltage rate, relaxation time on the electromechanical and shape-memory behavior of dielectric elastomers. This work provides a method for combining the shape-memory properties and electroactive polymers, which can expand the applications of these soft active materials.
PACS: 62.20.fg – Shape-memory effect; yield stress; superelasticity / 77.84.-s – Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials / 64.70.P- – Glass transitions of specific systems
© EPLA, 2016