A numerical model for magneto-mechanical coupled problems

A numerical model for transient magneto-elastic problems is presented. A ti me stepping solver is included in a non-linear iterative scheme to allow ri te bi-directional coupling consideration. The 3D FEM solver is divided into Jour operations: An eddy current problem is solved with a t - phi formulat ion, with edge and nodal elements. Local application of virtual work princi ple is used to calculate magnetic force distribution. This is put in the me chanical problem, solved with modal equations. The deformation and the move ment of the structures are taken into account by moving the nodes of the me sh with the computed displacements, with Lagrangian form in the magnetic so lver. The model has been validated on a TEAM workshop problem.