Simulation of magnetostrictive Terfenol-D rod dynamics using a coupled FE-BEM

  • Jarng, Soon-Suck (Dept. of Electrical Control & Instrumentation, Chosun University)
  • 장순석 (조선대학교 전기제어계측공학부)
  • Published : 1999.07.31

Abstract

This paper describes the application of the coupled FE-BEM (finite element-boundary element method) for the numerical harmonic analysis of the linear dynamic behaviour of a magnetostrictive Terfenol-D rod in water. The magnetostrictive rod is three-dimensionally simulated to transduce applied electric current in a helical coil around the rod to mechanical displacement. The theoretical derivation of the magnetostrictive matrix equation is described in detail. The steady-state resonance response of the displacement is shown. In addition, the directivity pattern and the radiation impedance are also shown.

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