Finite element modelling of a magnetostrictive coated cantilever system as a function of magnetic film thickness

Using the FEMLAB framework inside MATLAB, magnetostrictive coated cantilever system is modelled. Structural mechanics are coupled with the magnetostrictive strain tensor and solved using FEM techniques for a range of geometries and magnetic layer thicknesses. The device studied here is a beam of 40 mm long, with a substrate thickness of 400 mum. One edge is pinned to form a cantilever. The magnetic material layer is attributed the properties of a Permalloy material and it is assumed that the integrity of the interface between the substrate and magnetic layer is unaffected by bending.