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arXiv · 1012.1462

Compression-induced failure of electro-active polymeric thin films

Domenico De Tommasi·Giuseppe Puglisi·Giuseppe Zurlo
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Abstract

The insurgence of compression induces wrinkling in actuation devices based on EAPs thin films leading to a sudden decrease of performances up to failure. Based on the classical tension field theory for thin elastic membranes, we provide a general framework for the analysis of the insurgence of in-plane compression in membranes of electroactive polymers (EAPs). Our main result is the deduction of a (voltage-dependent) domain in the stretch space which represents tensile configurations. Under the assumption of Mooney-Rivlin materials, we obtain that for growing values of the applied voltage the domain contracts, vanishing at a critical voltage above which the polymer is wrinkled for any stretch configuration. Our approach can be easily implemented in numerical simulations for more complex material behaviors and provides a tool for the analysis of compression instability as a function of the elastic moduli.

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Domenico De Tommasi, Giuseppe Puglisi, Giuseppe Zurlo. 2010-12-07. Compression-induced failure of electro-active polymeric thin films. https://doi.org/10.1063/1.3568885

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