Efficient model for field-induced magnetization and magnetostriction of Galfenol
Efficient model for field-induced magnetization and magnetostriction of Galfenol
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DOI：
10.1063/1.3129316
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发表时间：
2009-06
影响因子：
3.2
通讯作者：
P. Evans;M. Dapino
中科院分区：
文献类型：
--
作者：
P. Evans;M. Dapino
提出了一个完全耦合的非线性模型，描述了立方磁致伸缩材料在恒定应力下的三维（3D）应变和磁化强度对磁场的响应。一个多尺度的热力学方法是考虑非线性各向异性，材料纹理，和滞后效应。该模型与纹理多晶Galfenol的测量进行了验证。该模型提供了一个有效的框架进行表征，设计和控制的Galfenol（Fe-Ga）设备的3D功能组合磁场和应力加载。
A fully coupled, nonlinear model is presented that characterizes the three-dimensional (3D) strain and magnetization response to magnetic field at constant stress in cubic magnetostrictive materials. A multiscale thermodynamic approach is taken which accounts for nonlinear anisotropy, material texture, and hysteresis effects. The model is validated with measurements of textured polycrystalline Galfenol. The model provides an efficient framework for characterization, design, and control of Galfenol (Fe–Ga) devices with 3D functionality subjected to combined magnetic field and stress loading.