Determining Electromechanical Network Model Parameters of a Piezomagnetic Unimorph Structure With Finite-Element Simulations

Two-layer piezomagnetic elements within a homogeneous magnetic field have been well studied. In this paper the effect of an inhomogeneous magnetic field distribution in the magnetic layer on the electromechanical properties of a two-layer element with planar conductor arrangement on top is investigated. Based on static Finite Element (FE) simulations the parameters of its network model are determined. The inductance of the arrangement with and without magnetic layer allows the calculation of the reluctances of the magnetic system. Magnetic field strength and moment of the fixed-fixed beam give the magnetomechanical transduction coefficient, moment and deflection the bending compliance. The dynamic behavior of the electromechanical transducer can be calculated efficiently by the completed network model in sensing as well as actuation direction.