Analytical Model of Magnetostrictive/Piezoelectric laminate Composites

Khalil Moussi, Slim Naifar, Sonia Bradai, Olfa Kanoun

Abstract

In the past few decades, extensive researches have been conducted on magnetoelectric (ME) effect especially in composite materials. Based on ME effect, vibration energy is converted into electric energy. Using Terfenol-D and PZT materials magnetic field is transformed into electric power. However, magnetic, mechanical and electric effects appear when the two composites are coupled. Moreover, under dynamic conditions, additional effects alter the transducer performance. For these purposes, investigations were carried out on magnetostrictive and piezoelectric materials. This paper addresses the analytical modeling of magnetostrictive/piezoelectric laminate composites. First, the linear model and the equivalent circuits are presented for both magnetostrictive and piezoelectric layers. Second, the equivalent circuit of the ME laminate composites is obtained. Finally, we simulate the analytical model to determine the optimal thickness giving high electric power output.

Keywords

analytical modeling, magnetostriction, piezoelectricity, linear modeling, equivalent circuit

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DOI

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IMEKO TC

TC19 - Environmental Measurements

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