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Finite Element Formulation of a Piezoelectric Continuum and Performance Studies of Laminar PZT-Patch-Modules

Published online by Cambridge University Press:  01 February 2011

Monika Gall
Affiliation:
Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse 11, 79108 Freiburg, Germany, Contact: monika.gall@iwm.fraunhofer.de
Bärbel Thielicke
Affiliation:
Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse 11, 79108 Freiburg, Germany, Contact: monika.gall@iwm.fraunhofer.de
Christophe Poizat
Affiliation:
Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse 11, 79108 Freiburg, Germany, Contact: monika.gall@iwm.fraunhofer.de
Sven Klinkel
Affiliation:
Institute for Structural Analysis, University of Karlsruhe (TH), Kaiserstrasse 12, 76131 Karlsruhe, Germany
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Abstract

Efficient application of piezoelectric sensors and actuators requires extensive investigations of their loading limits, failure-behavior and life-span under service conditions. Here the performance of laminar PZT-patch-modules is studied, applying a combined approach of experimental and numerical tests. Four-point bending tests are used to evaluate the sensor performance. Linear electro-mechanical coupling is implemented in an 8-node brick user element of the research finite element code FEAP to develop a flexible FE-tool for piezoelectric problems. Comparative FE-analyses of the bending test are carried out in order to assess the capability of the implemented FEAP user element versus the commercially available FE-code ABAQUS. FE-results show good agreement with the experimental tests, different element types yield slight deviations which are discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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