Instability analysis of an electro-magneto-elastic actuator: A continuum mechanics approach
The study of advanced artificial electro-magneto-elastic (EME) materials recently connects the material science with the electrodynamics. In particular, EME materials established a new research direction, which provides the fruitful ideas for the advanced engineering and medical field applications....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-11-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5055793 |
| Summary: | The study of advanced artificial electro-magneto-elastic (EME) materials recently connects the material science with the electrodynamics. In particular, EME materials established a new research direction, which provides the fruitful ideas for the advanced engineering and medical field applications. In the present paper, we introduce a continuum mechanics-based method to analyze an electro-magneto-mechanical instability (EMMI) phenomenon of a smart actuator made of an EME material. The proposed method is based on the nonlinear theory of electro-magneto-elasticity followed by the second law of thermodynamics. We develop an analytical EMMI model for a smart actuator through a new amended energy function. This amended energy function accounts the electro-magnetostriction phenomenon for a class of an incompressible isotropic EME material. Additionally, the amended energy function successfully resolves the physical interpretation issue of the Maxwell stress tensor in large deformation. The formulated continuum mechanics-based EMMI model is also compared and validated with an energy-based EMMI model existing in the literature. |
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| ISSN: | 2158-3226 |