A Dynamic Hysteresis Constitutive Relation for Giant Magnetostrictive Materials

作者：Zheng Xiaojing^*; Sun Le; Jin Ke

来源：Mechanics of Advanced Materials and Structures, 2009, 16(7): 516-521.

DOI：10.1080/15376490903133277

• constitutive relation
• magnetostrictive
• magnetic-elasticthermal coupling
• hysteresis
• dynamic response

Giant Magnetostrictive Materials (GMM), such as Terfenol-D materials, have complex nonlinear and hysteresis properties especially when the materials under pre-stresses are in a bias magnetic field and a time-varying excitation field. In order to totally describe the constitutive behavior of GMM, a static and nonlinear anhysteretic constitutive relation is analytically established by the thermodynamic theory and the theory of the Weiss molecular field. Having considered the energy loss of GMM arising from a time-varying field, such as AC magnetic field, a dynamic hysteresis constitutive relation for Terfenol-D materials is obtained in this paper. This constitutive relation can totally display the magnetic-elastic-thermal coupling properties and the effect of varied operating conditions on the minor magnetostriction loop of GMM, and are in good agreement with existing experimental data.

• 出版日期2009
• 单位兰州大学