MAGNETOSTRICTION SIMULATION USING ANISOTROPIC VECTOR PREISACH-TYPE MODELS

Magnetic materials exhibiting gigantic magnetostriction, especially Te rfenol, are currently being widely used in fine positioning and active vibration damping devices, By involving accurate magnetostriction mod els during design stages, precision of such devices may be significant ly enhanced. In this paper a straight-forward approach that employs an isotropic vector Preisach-type hysteresis models in simulating field-s tress effects on magnetic materials is presented. Formulation of the p roposed model is given and its identification problem is solved. The p resented approach has been numerically implemented and numerous digita l computer simulations have been performed for Terfenol material. Samp le simulation results as well as comparisons with experimentally obser ved magnetostriction carves are reported in the paper.