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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Abstract

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.
Keywords:Micromechanics.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McBride, Dr 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
Publisher:Elsevier
ISSN:0022-5096
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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