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A FINITE ELEMENT FOR ACTIVE COMPOSITE PLATES WITH PIEZOELEC-TRIC LAYERS AND EXPERIMENTAL VALIDATION

Sartorato, M.; Medeiros, R. de; Tita, V.;

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The study of smart materials for uses in the aerospace, aeronautics and petroleum industries has increased due to the potential of such materials for several applications such as structure health monitoring, damage identification, vibration control and/or suppression, energy harvesting, along with others. In particular, piezoelectric smart composite laminates – laminates made of fiber reinforced polymers in which some or all of the layers contain pie-zoelectric fibers – are widely studied for being able to serve as both actuators and sensors in the cited applications and having mechanical properties with the capacity to attend the high requirement of the mentioned areas. One of the main obstacles to the practical application of this technology is the difficulty in the prediction and simulation of the behavior of such struc-tures. In this work, a model for structural composite laminates containing active piezoelectric layers is presented and used to formulate a degenerated shell quadratic finite element with eight nodes. The element was implemented into a Python routine and numerical results were compared to the finite element commercial package Abaqus Experimental results of an alu-minum plate with piezoelectric patches attached are presented as well. The numerical results, using the formulation implemented by the element, were compared to the experimental ana-lyses and to a full-scale model in which the full laminate, including the fibers, was modeled using Abaqus’ solid elements, both structural and piezoelectric.

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Palavras-chave: finite elements, piezoelectric composites, active structure,

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DOI: 10.5151/meceng-wccm2012-19051

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Como citar:

Sartorato, M.; Medeiros, R. de; Tita, V.; "A FINITE ELEMENT FOR ACTIVE COMPOSITE PLATES WITH PIEZOELEC-TRIC LAYERS AND EXPERIMENTAL VALIDATION", p. 2867-2883 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-19051

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