EXTENDED BOND GRAPH RETICULATION OF MAGNETOSTRICTIVE CONTINUA

The extended bond graph (EBG) method is used to model the distributed coupled magnetoelastic effects of general magnetostrictive continua. T he mechanical and magnetic fields are described in terms of defined di splacement and momentum states, and Galerkin's discretization techniqu e is applied to reticulate the dynamics of the fields into power flows which are defined as the inner products of extended efforts and flows . The power-based EBG descriptions are consistently used to represent the discretized inertia, compliance, reluctance, coupled fields, and e xternal sources of the magnetostrictive continua. The power bonds asso ciated with the multienergetic fields are directed separately to the m agnetic and mechanical energetic domains to enforce energy conservatio n laws. Details of the development of the general formulation for the model are provided. The EBG network model provides a unified way to an alyze the coupling effects and dynamics of complex systems using gener al magnetostrictive continua.