The European Physical Journal Applied Physics

Table of Contents - May 2008 - Volume 42, Issue 02  

Physics of Energy Conversion and Coupled Phenomena

A constitutive law for magnetostrictive materials and its application to Terfenol-D single and polycrystals

L. Daniela1 and N. Galopina1

Laboratoire de Génie Électrique de Paris, CNRS UMR 8507, SUPELEC, Univ. Paris-Sud, UPMC Univ. Paris 06, 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex, France

Abstract

This paper addresses a multiscale strategy for the prediction of anhysteretic magneto-elastic behavior and its application to the definition of a magneto-elastic constitutive law for Terfenol-D. The multiscale modeling is based on an energetic procedure at the single crystal scale. Localization and homogenization procedures are then applied to deduce the constitutive law of polycrystalline media from the behavior of the corresponding single crystal. The method is applied first to define the magneto-elastic behavior of single crystals, and the application to polycrystalline samples is then considered. Modeling results are compared to experimental data.

(Received August 9 2007)

(Revised October 12 2007)

(Accepted January 18 2008)

(Online publication March 28 2008)

PACS:

  • 75.80.+q – Magnetomechanical and magnetoelectric effects, magnetostriction;
  • 46.25.Hf – Thermoelasticity and electromagnetic elasticity (electroelasticity, magnetoelasticity)

laurent.daniel@lgep.supelec.fr