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30 March 2010 Influence of a non-uniform stress on the electromechanical transduction coefficient of a magnetostrictive unimorph
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Abstract
In this paper an electromechanical network model of a magnetostrictive unimorph structure, acting as solenoid coil core, is developed. For typical applications a non-uniform stress distribution in the magnetostrictive layer results which is simulated via FEM. This phenomenon leads to a spatial varying electromechanical transduction coefficient for large deflections and was taken into account by coupled finite electromechanical network elements. By simplifying the finite network model an easy to use new network model is obtained which enables the fast analysis of the system and optimization of sensor and actor properties.
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E. Starke, U. Marschner, G. Pfeifer, W.-J. Fischer, and A. B. Flatau "Influence of a non-uniform stress on the electromechanical transduction coefficient of a magnetostrictive unimorph", Proc. SPIE 7644, Behavior and Mechanics of Multifunctional Materials and Composites 2010, 76440T (30 March 2010); https://doi.org/10.1117/12.855184
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