Multi-scale Modeling for Piezoelectric Composite Materials

Abstract: In this paper, we focus on multi-scale modeling and simulation of piezoelectric composite materials.Piezoelectricity is the ability of some materials to generate an electric field or electric potential in response to applied mechanical stress. And it is reversible in piezoelectric materials.This property can be reflected in the constitutive relations as coupling of mechanical field and electrical field. First, for those materials with periodic microstructure, we deduced the macroscopic model from the micro-scopic model of piezoelectric composite material and carried out the corresponding convergence analysis under the frame of homogenization. Second, for general cases, we also designed the multi-scale model under the frame of HMM and gave out error estimate between the HMM solutions and the homogenization solutions.Finally,we give out numerical examples.The macroscopic models of type 3-1 piezoelectric com-posite materials and type 2-2 piezoelectric composite materials are got by the two methods mentioned above.Also,we give out the comparison and discussion about the numerical results we get in the numerical examples
Key words: Piezoelectric Composite Materials; Multi-scale; Homogenization theory; Asymptotic expansion; Heterogeneous Multi-scale Method;

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