The incorporation of the Cauchy stress matrix tensor in micromagnetic simulations
The incorporation of the Cauchy stress matrix tensor in micromagnetic simulations
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DOI：
10.1063/1.3489969
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发表时间：
2010-10
影响因子：
3.2
通讯作者：
J. Dean;M. Bryan;G. Hrkac;A. Goncharov;C. Freeman;M. A. Bashir;T. Schrefl;D. Allwood
中科院分区：
文献类型：
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作者：
J. Dean;M. Bryan;G. Hrkac;A. Goncharov;C. Freeman;M. A. Bashir;T. Schrefl;D. Allwood
提出了一种模拟磁弹性系统复杂变形变化的方法。这涉及到将完整的柯西应力矩阵张量合并到有限元微磁代码中。利用有限元模型对研究模型中的每个网格单元的应力进行了预计算。然后将该应力图导入有限元微磁代码，以求解由此产生的磁化强度变化。通过对维拉里效应和压电-压磁混合系统的模拟与实验观测的比较，证明了该方法的准确性。
A method of simulating complex deformational changes of magnetoelastic systems has been developed. This involves incorporation of the complete Cauchy stress matrix tensor into a finite element micromagnetic code. Finite element modeling was used to precompute the stress on each mesh-element in the studied model. This stress-map is then imported into a finite element micromagnetic code to solve the resultant changes in magnetization. The veracity of this method is demonstrated by comparing simulations of the Villari effect and a hybrid piezoelectric-piezomagnetic system to experimental observations.