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Computational Science and Its Applications — ICCSA 2003

Volume 2668 of the series Lecture Notes in Computer Science pp 715-724

Date:

Finite Element Simulation of BAW Propagation in Inhomogeneous Plate Due to Piezoelectric Actuation

  • A. ChakrabortyAffiliated withKarlsruhe UniversityDepartment of Aerospace Engineering, Indian Institute of Science
  • , D. Roy MahapatraAffiliated withKarlsruhe UniversityDepartment of Aerospace Engineering, Indian Institute of Science
  • , S. GopalakrishnanAffiliated withKarlsruhe UniversityDepartment of Aerospace Engineering, Indian Institute of Science

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Abstract

A set of finite elements (FEs) is formulated to analyze wave propagation through inhomogeneous material when subjected to mechanical, thermal loading or piezo-electric actuation. Elastic, thermal and electrical properties of the materials are allowed to vary in length and thickness direction. The elements can act both as sensors and actuators. These elements are used to model wave propagation in functionally graded materials (FGM) and the effect of inhomogeneity in the wave is demonstrated. Further, a surface acoustic wave (SAW) device is modeled and wave propagation due to piezo-electric actuation from interdigital transducers (IDTs) is studied.