Standard Article

Finite Elements: Modeling of Piezoceramic and Magnetostrictive Sensors and Actuators

Simulation

Modeling Methods for SHM

  1. Srinivasan Gopalakrishnan

Published Online: 15 SEP 2009

DOI: 10.1002/9780470061626.shm063

Encyclopedia of Structural Health Monitoring

Encyclopedia of Structural Health Monitoring

How to Cite

Gopalakrishnan, S. 2009. Finite Elements: Modeling of Piezoceramic and Magnetostrictive Sensors and Actuators. Encyclopedia of Structural Health Monitoring. .

Author Information

  1. Indian Institute of Science, Department of Aerospace Engineering, Bangalore, India

Publication History

  1. Published Online: 15 SEP 2009

Abstract

In this article, finite element modeling of smart structures with built-in smart sensors and actuators is presented. Three different smart material sensors/actuators, namely, the piezoelectric (PZT—lead–zirconate–titanate), magnetostrictive (Terfenol-D), and piezofiber composite material patches used as sensors/actuators, are considered for modeling in this article. The first part of the article briefly describes the constitutive models for these materials (which is dealt extensively in previous articles in this section), which is followed by the finite element formulation of 1-D and 2-D finite elements. Also, finite element model for a thin-walled beam element is presented. Some numerical examples using the formulated element are presented to demonstrate the abilities of the formulated element.

Keywords:

  • piezoelectric;
  • magnetostrictive;
  • PZT;
  • Terfenol-D;
  • piezo fiber composites