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Proceedings Paper

New approach to solving crack tip stress fields for piezoelectric materials
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Paper Abstract

A new technique has been developed which solves the anisotropic stress fields in piezoelectric materials. The technique utilizes orthotropy rescaling by rescaling the coordinate axes in terms of certain elastic, piezoelectric and dielectric material coefficients to obtain the biharmonic equation. The steps which lead to the biharmonic equation require decoupling the stress and electric field components. It is shown that for a certain ratio of dielectric and piezoelectric coefficients, an applied electric field does not change the stress field near a crack tip. The new technique is compared to Stroh's formalism and to finite element modeling.

Paper Details

Date Published: 13 August 2003
PDF: 11 pages
Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003); doi: 10.1117/12.484080
Show Author Affiliations
William S. Oates, Georgia Institute of Technology (United States)
Christopher S. Lynch, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5053:
Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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