Numerical simulation on coupling behavior of Terfenol-D rods

作者：Sun L; Zheng XJ^*

来源：International Journal of Solids and Structures, 2006, 43(6): 1613-1623.

DOI：10.1016/j.ijsolstr.2005.06.085

• terfenol-D
• constitutive relations
• Delta E effect
• resonance frequency
• numerical simulation

Terfenol-D rods, as a kind of giant magnetostrictive materials, are often used as active elements of device for antivibration application due to its superior material properties. Their magneto-mechanical responses exhibited in many experiments are nonlinear and coupled. In order to have a good understanding on their coupling characters for accurate control, the numerical simulation on dynamic behavior of a Terfenol-D rod is conducted based on a nonlinear and coupling constitutive model proposed in this paper. The results show that the constitutive model can effectively describe some intrinsic coupling phenomena observed by experiments involving the maximum magneto strictive strain of a Terfenol-D rod changing with pre-stresses and the corresponding dynamic responses show that the frequency and the amplification of the Terfenol-D rod change with magnetic bias field and pre-stresses, which are also consistent with experimental data and cannot be captured by previous constitutive model.

• 出版日期2006-3
• 单位兰州大学