Roy Mahapatra, D and Ghosh, DP and Gopalakrishnan, S (2007) Multiscale finite element modelling of pattern formation in magnetostrictive composite thin film. In: International Journal for Multiscale Computational Engineering, 4 (3). pp. 337-349.
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A multiscale finite element model with subgrid-scale spatial homogenization and stability estimate for time discretization in the context of magnetostrictive composite thin-film micromagnetics are reported in this paper. Developments of the phenomenological microscopic constitutive model and the subsequent multiscale approach are aimed at analyzing the formation of magnetic domains in Terfenol-D/epoxy thin film under transverse magnetic (TM) mode of excitation. The phenomenological constitutive model is based on the density of domain switching (DDS) of an ellipsoidal inclusion in a unit cell. The subgrid-scale spatial homogenization works as a method of upwinding the small-scale micromagnetism and magnetostriction to the larger length scale. Numerical results indicate complex features of this thin-film dynamics, such as the formation of connected domains.
| Item Type: | Journal Article |
|---|---|
| Publication: | International Journal for Multiscale Computational Engineering |
| Publisher: | Begell House Inc. |
| Additional Information: | Copyright of this article belongs to Begell House Inc. |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 29 Jun 2007 |
| Last Modified: | 17 Jan 2012 10:07 |
| URI: | http://eprints.iisc.ac.in/id/eprint/11315 |
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