Piezoelectric torsional sensors and actuators - A computational study

Christian Zehetner, Markus Zellhofer, Michael Krommer

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

This paper concerns a computational study on the realization of piezoelectric torsional actuators and sensors. Exemplarily, a rod with rectangular solid cross-section is considered consisting of a linear elastic substrate material on which orthotropic piezoelectric layers are bonded. On the one hand side, piezoelectric actuation is obtained by applying voltage to the electrodes of the piezoelectric layer. Secondly, the layers can be used as sensors by measuring the voltage on the electrodes which is caused by external torsional loads. Three material types are compared for possible realisations: ammonium dihydrogen phosphate (ADP) and two types of macro fiber composites (MFC). In the framework of Saint Venant's theory of torsion, the actuator and sensor equations are formulated: The actuating torsional moment is proportional to the applied voltage, and the sensor voltage is proportional to the torsional angle. Finally, the results are validated by means of three-dimensional Finite Element computations.

Original languageEnglish
Publication statusPublished - 2011
Externally publishedYes
Event3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2011 - Corfu, Greece
Duration: 25 May 201128 May 2011

Conference

Conference3rd International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2011
CountryGreece
CityCorfu
Period25.05.201128.05.2011

Keywords

  • Macro fiber composites
  • Piezoelectric actuation
  • Piezoelectric rod
  • Piezoelectric sensor
  • Torsion

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