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Proceedings Paper

New unifying concepts for modeling smart materials
Author(s): William S. Oates
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Paper Abstract

Material modeling techniques for active materials include a broad number of approaches that are often focused on predicting a specific field-coupled constitutive relation. This field-coupled material behavior may include electro-mechanical, magnetostrictive, thermal or light induced phase transformations, or ionic deformation. Limited work has been conducted on developing a unified theory. Such theories are useful for quantifying underlying field-coupled mechanics concepts that may otherwise be neglected in phenomenological models. The theoretical approach presented here employs nonlinear continuum mechanics coupled to a set of microscale order parameters that describe microstructure evolution and phase changes. Unifying concepts are obtained which illustrate how material constants such as piezoelectric coefficients depend on the choice of the order parameter and mechanical energy function without introducing explicit phenomenological coupling parameters.

Paper Details

Date Published: 31 March 2010
PDF: 12 pages
Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 764406 (31 March 2010); doi: 10.1117/12.847550
Show Author Affiliations
William S. Oates, Florida State Univ. (United States)

Published in SPIE Proceedings Vol. 7644:
Behavior and Mechanics of Multifunctional Materials and Composites 2010
Zoubeida Ounaies; Jiangyu Li, Editor(s)

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