Dynamic nonlinear model with eddy current effect for stress-driven Galfenol energy

The energy harvester using magnetostrictive materials (e.g., Metglas, Terfenol-D and Galfenol) is receiving increased attention [1]-[5]. However, prediction of performance for the magnetostrictive harvester is complicated because the device exhibits nonlinear magnetomechanical coupling characteristics and the stress-induced eddy current loss, which is the leading limiting factor of the device.