Experimental Characterization and Analysis of Magnetic Local Forces in Nonlinear Magnetic Materials

Abstract

Many different formulations are available for the local force calculation of a nonlinear magnetic body. The accuracy of these methods has not yet been experimentally verified. As a verification test on magnetic local force formulations for nonlinear magnetic materials, an experimental benchmark model is established. The deformation of ten types of nonlinear magnetic materials subjected to a uniform magnetic field is measured using a high-precision camera. The nonlinear magnetic behavior of the cores and materials in the experimental setup, and the elastic parameters of the magnetic materials, are also measured for the benchmark model. The influences of mechanical and magnetic properties on local deformation were analyzed. The experimental results can be used in numerical simulations employing different local force formulations to predict this deformation and for comparison.