Influences Of Microstructures On The Effective Properties Of Magnetoelectroelastic Composites

With the development of material science, magnetoelectroelastic composite materials has been widely used in the field of modern science and technology, it has become a kind of important intelligent materials and structures. Effective coefficients are important parameters of composite materials and strongly influenced by the composite microstructure, so the prediction of effective magnetoelectroelastic properties of composite materials is of great significance.We study the effective magnetoelectroelastic properties with periodic arrangement unit of unidirectional fiber composite. By exerting on representative volume element boundaries periodic boundary conditions of displacement and electric potential and magnetic potential and with finite element software COMSOL Multiphysics PDE solving module the average magnetoelectroelastic field of the composite are got. By the average of magnetoelectroelastic field and constitutive relations of magnetoelectroelastic composite material the kinds of effective magnetoelectroelastic coefficients of the composite materials are solved.The microstructure change of various cases of magnetoelectroelastic effective coefficients of the composite are calculated. By example, the same volume fraction of electromagnetic fiber composites with round cross section and circular cross section effective magnetoelectroelastic coefficients are compared, the piezoelectric and piezomagnetic fiber changes with each other and rigidity changes of the interface layer of the effective magnetoelectroelastic coefficients are discussed, three kinds of different piezoelectric and piezomagnetic materials arranged of effective magnetoelectroelastic coefficients are compared, the damage of the magnetoelectroelastic composites of effective magnetoelectroelastic coefficients are researched.The conclusions in present paper can provide valuable references for designing electromagnetic elastic composite materials with high sensibility.