Qinghua Cao

Modeling and experiments of a laminated magnetostrictive cantilever beam

A nonlinear modeling of magnetostrictive cantilever beam actuators is proposed by integrating an energy-based constitutive magnetostrictive model with the classical laminated beam theory in this article. The composite stiffness and the magnetic field are identified as the critical parameters which significantly influence the performance of the cantilever beam. Detailed experimental studies are carried out with different applied magnetic fields and various cantilever beam thicknesses. The experimental results verified the nonlinearity of the magnetomechanical response of the structure.

Laminated Structures and Measurement of Magnetostriction for Transducer Applications

This paper aims to designed a prototype for achieving the full magnetostriction of Galfenol, Lamination struction of transducer is designed and the radiation impedance is expressed in mechanical terms, a simplified one- dimensional modeling of SPICE magnetostrictive transducer is established, the electrical input impedance is simulated as the function of frequency and experimentally adjusting the values is to match an existing impedance curve. a good fit between model and measurement is shown by measured and simulated electrical input impedances for the device.