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On anti-plane shear behavior of a Griffith permeable crack in piezoelectric materials by use of the non-local theory

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Abstract

In this paper, the non-local theory of elasticity is applied to obtain the behavior of a Griffith crack in the piezoelectric materials under anti-plane shear loading for permeable crack surface conditions. By means of the Fourier transform the problem can be solved with the help of a pair of dual integral equations with the unknown variable being the jump of the displacement across the crack surfaces. These equations are solved by the Schmidt method. Numerical examples are provided. Unlike the classical elasticity solutions, it is found that no stress and electric displacement singularity is present at the crack tip. The non-local elastic solutions yield a finite hoop stress at the crack tip, thus allowing for a fracture criterion based on the maximum stress hypothesis. The finite hoop stress at the crack tip depends on the crack length and the lattice parameter of the materials, respectively.

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Authors and Affiliations

  1. Center for Composite Materials and Electro-Optics Research Center, Harbin Institute of Technology, 150001, Harbin, China

    Zhou Zhengong, Du Shanyi & Wang Biao

Authors
  1. Zhou Zhengong
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  2. Du Shanyi
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  3. Wang Biao
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The project supported by the National Natural Science Foundation of China (50232030 and 10172030)

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Zhengong, Z., Shanyi, D. & Biao, W. On anti-plane shear behavior of a Griffith permeable crack in piezoelectric materials by use of the non-local theory. Acta Mech Sinica 19, 181–188 (2003). https://doi.org/10.1007/BF02487680

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  • DOI: https://doi.org/10.1007/BF02487680

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