Applied Mathematics and Mechanics (English Edition) ›› 2023, Vol. 44 ›› Issue (4): 525-546.doi: https://doi.org/10.1007/s10483-023-2979-8

• 论文 • 上一篇    下一篇

Theoretical study on dynamic effective electroelastic properties of random piezoelectric composites with aligned inhomogeneities

Yanpeng YUE, Yongping WAN   

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • 收稿日期:2022-09-29 修回日期:2023-02-03 发布日期:2023-03-30
  • 通讯作者: Yongping WAN, E-mail: wanyp@tongji.edu.cn
  • 基金资助:
    the National Natural Science Foundation of China (No. 12072240)

Theoretical study on dynamic effective electroelastic properties of random piezoelectric composites with aligned inhomogeneities

Yanpeng YUE, Yongping WAN   

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • Received:2022-09-29 Revised:2023-02-03 Published:2023-03-30
  • Contact: Yongping WAN, E-mail: wanyp@tongji.edu.cn
  • Supported by:
    the National Natural Science Foundation of China (No. 12072240)

摘要: The closed-form solutions of the dynamic problem of heterogeneous piezoelectric materials are formulated by introducing polarizations into a reference medium and using the generalized reciprocity theorem. These solutions can be reduced to the ones of an elastodynamic problem. Based on the effective medium method, these closed-form solutions can be used to establish the self-consistent equations about the frequency-dependent effective parameters, which can be numerically solved by iteration. Theoretical predictions are compared with the experimental results, and good agreement can be found. Furthermore, the analyses on the effects of microstructure and wavelength on the effective properties, resonance frequencies, and attenuation are also presented, which may provide some guidance for the microstructure design and analysis of piezoelectric composites.

关键词: piezoelectric composite, dynamic effective property, self-consistent method, resonance frequency, wavelength

Abstract: The closed-form solutions of the dynamic problem of heterogeneous piezoelectric materials are formulated by introducing polarizations into a reference medium and using the generalized reciprocity theorem. These solutions can be reduced to the ones of an elastodynamic problem. Based on the effective medium method, these closed-form solutions can be used to establish the self-consistent equations about the frequency-dependent effective parameters, which can be numerically solved by iteration. Theoretical predictions are compared with the experimental results, and good agreement can be found. Furthermore, the analyses on the effects of microstructure and wavelength on the effective properties, resonance frequencies, and attenuation are also presented, which may provide some guidance for the microstructure design and analysis of piezoelectric composites.

Key words: piezoelectric composite, dynamic effective property, self-consistent method, resonance frequency, wavelength

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