A multi-field coupled mechanical-electric-magnetic-chemical-thermal (MEMCT) theory for material systems

摘要

A material system may have rich physical and chemical properties; it can respond to the action of multifields. This paper reports the development of a generalized constitutive theory, based on continuous thermodynamics, to describe the multifield nature and dissipative behaviors of a material system, which couples the mechanical, electric, magnetic, chemical, and thermal (MEMCT) aspects of material characteristics. This theory also deals with chemical diffusions at different time scales subjected to an electromagnetic field and subsequent chemical reactions occurring between the diffusive species and the host material, and the dynamic evolutions of charged species subjected to thermomagnetoelectric actions and related forces.