Finite-element analysis on cantilever beams coated with magnetostrictive material

  • Dean J
  • Gibbs M
  • Schrefl T
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Abstract

The main focus of this paper is to highlight some of the key criteria in successful utilization of magnetostrictive materials within a cantilever based microelectromechanical system (MEMS). The behavior of coated cantilever beams is complex and many authors have offered solutions using analytical techniques. In this study, the FEMLAB finite-element multiphysics package was used to incorporate the full magnetostrictive strain tensor and couple it with partial differential equations from structural mechanics to solve simple cantilever systems. A wide range of geometries and material properties were solved to study the effects on cantilever deflection and the system resonance frequencies. The latter were found by the use of an eigen-frequency solver. The models have been tailored for comparison with other such data within the field and results also go beyond previous work.

Author-supplied keywords

  • Finite-element modeling
  • Magnetostriction
  • Magnetostrictive actuator
  • Microelectromechanical system (MEMS)

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Authors

  • J. Dean

  • M. R.J. Gibbs

  • T. Schrefl

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