Abstract：Based on the thermodynamic theory, the Jiles-Atherton model, the energy balance principle, and the structural dynamics principle of the transducer system, a multi-field coupling model of the giant magnetostrictive transducer is founded, which includes the magnetic-mechanical-thermal coupling terms and takes the dynamic losses into account. According to the proposed model, the relation between the magnet field and the output strain of the transducer is calculated using the numerical algorithm. Simulation results are in good agreement with the experimental ones, which indicates that the multi-fields coupling model considering the dynamic losses can well describe the actual working conditions of the transducer and provide theoretical guidance for design and development of the transducer in future.
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2016, Vol. 31 
