Size-dependent effective properties of anisotropic piezoelectric composites with piezoelectric nano-particles

作者：Huang, Ming-Juan; Fang, Xue-Qian^*; Liu, Jin-Xi; Feng, Wen-Jie; Zhao, Yong-Mao

来源：Smart Materials and Structures, 2015, 24(1): 015005.

DOI：10.1088/0964-1726/24/1/015005

• anisotropic piezoelectric composites
• spherical nano-particles
• size-dependent piezoelectric response
• surface/interface theory

Based on the electro-elastic surface/interface theory, the size-dependent effective piezoelectric and dielectric coefficients of anisotropic piezoelectric composites that consist of spherically piezoelectric inclusions under a uniform electric field are investigated, and the analytical solutions for the elastic displacement and electric potentials are derived. With consideration of the coupling effects of elasticity, permittivity and piezoelectricity, the effective field method is introduced to derive the effective dielectric and piezoelectric responses in the dilute limit. The numerical examples show that the effective dielectric constant exhibits a significant variation due to the surface/interface effect. The dielectric property of the surface/interface displays greater effect than the piezoelectric property, and the elastic property shows little effect. A comparison with the existing results validates the present approach.

• 出版日期2015-1