Analysis and experiment of dynamic deflection of a thin plate with a coupling effect

The authors describe computational analyses and an experiment on thin plate deflection in a magnetic field. The authors show the governing equation for the eddy current and the deflection analyses of a thin plate, considering the coupling effect between the eddy current and the deflection under nonuniform magnetic field. A computer code that takes the effect into account was developed on the basis of a thin plate approximation. The code was applied to the FELIX cantilevered beam (without torsion) and the results (current density, deflection, and bending strain) agreed quite well with the experimental results. The authors performed a plate deflection experiment (with torsion) and the code was also applied to this experiment. The comparison between numerical and experimental results verified the analysis method and the code.<>