Interface elasticity effects in polymer-filled nanoporous metals

Wilmers, J., McBride, A. and Bargmann, S. (2017) Interface elasticity effects in polymer-filled nanoporous metals. Journal of the Mechanics and Physics of Solids, 99, 163 - 177. (doi: 10.1016/j.jmps.2016.11.011)

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A continuum formulation for electroactive composites made from nanoporous gold and ion-conducting polymer is proposed. A novel extension of surface elasticity theory is developed to account for the high surface-to-volume ratio of nanoporous gold, and to capture the chemoelectromechanical coupling that occurs on the interface between the metal and the polymer. This continuum formulation accounts for the fully non-linear behaviour exhibited by the composite. The balance of linear momentum, Gauß's flux theorem and a relation for the transport of charge carriers are introduced in the bulk material as well as on the interface to describe the non-linear multiphysics and highly coupled response of the actuator. The resulting system of non-linear equations is solved using the finite element method. A series of numerical examples is presented to elucidate the theory.

Item Type:Articles
Additional Information:The authors gratefully acknowledge fi nancial support from the German Research Foundation (DFG) (Grant no. SFB 986) via SFB 986 “ M 3 ” , project B6. We also thank J. Markmann at Helmholtz-Zentrum Geesthacht (SFB 986, project B2) for very fruitful discussions. Furthermore, we thank the anonymous reviewers for their insightful comments that helped to considerably improve this paper.
Glasgow Author(s) Enlighten ID:McBride, Professor Andrew
Authors: Wilmers, J., McBride, A., and Bargmann, S.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Journal of the Mechanics and Physics of Solids
Published Online:22 November 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Journal of the Mechanics and Physics of Solids 99: 163-177
Publisher Policy:Reproduced under a Creative Commons License

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