FORCED VIBRATION OF A THIN ROUND CONDUCTIVE PLATE IN MAGNETIC FIELD

Magnetoelastic forced vibration of a thin round plate subjected to mechanical loading in magnetic field is studied. Based on axisymmetric vibration equations, electromagnetic field equations and electromagnetic forces derived form Maxwell’s equations, the vibration problem of a round plate with clamped and simple support boundary is analyzed in the uniform magnetic field. With the aid of displacement mode hypothesis, the differential forced vibration equation is obtained by using of Galerkin method. By numerical method, the amplitude-frequency resonance and phase-frequency are gained, and the influences of magnetic induction as well as plate thickness on vibration characteristics are discussed.