Effective moduli of multiferroic fibrous composites with strain gradient and electromagnetic field gradient effects

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:222

Article

Kuo, Hsin-Yi¹ 

[1] Natl Yang Ming Chiao Tung Univ, Dept Civil Engn, Hsinchu 30010, Taiwan

关键词: Effective property;    Multiferroic fibrous composite;    Strain gradient;    Electric field gradient;    Magnetic field gradient;    Generalized anti-plane deformation;   

DOI  :  10.1016/j.ijsolstr.2021.02.018

来源: Elsevier

【 摘 要 】

This paper studies the effective moduli of multiferroic fibrous composites with strain gradient and electromagnetic field gradient effects subjected to generalized anti-plane shear deformation. Using the energy variational formulation and the generalized self-consistent method, we can determine the effective moduli of the heterogeneous material. The derived solutions are then applied to a BaTiO3-CoFe2O4 composite to demonstrate the effect of strain gradient, electric field gradient, and magnetic field gradient. Numerical results show that the gradient effects have significant influence on the effective moduli of the multiferroic composite. We show that the magnetoelectric voltage coefficient, the figure of merit of the multiferroic material, can be enhanced many-fold than that of the classical solution. In addition, most of the effective moduli increase as the radius of the fiber decreases (or equivalently the characteristic length increases). (C) 2021 Elsevier Ltd. All rights reserved.

【 授权许可】

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