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The scattering of harmonic elastic anti-plane shear waves by two collinear cracks in the piezoelectric plate by using the non-local theory

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Abstract

In this paper, the dynamic interaction between two collinear cracks in a piezoelectric material plate under anti-plane shear waves is investigated by using the non-local theory for impermeable crack surface conditions. By using the Fourier transform, the problem can be solved with the help of two pairs of triple integral equations. These equations are solved using the Schmidt method. This method is more reasonable and more appropriate. Unlike the classical elasticity solution, it is found that no stress and electric displacement singularity is present at the crack tip. The non-local dynamic elastic solutions yield a finite hoop stress at the crack tip, thus allowing for a fracture criterion based on the maximum dynamic stress hypothesis.

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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, Wu Linzhi & Wang Biao

Authors
  1. Zhou Zhengong
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  2. Wu Linzhi
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  3. Wang Biao
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Additional information

The project supported by the Natural Science Foundation of Heilongjiang Province and the National Natural Science Foundation of China(10172030, 50232030)

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Zhengong, Z., Linzhi, W. & Biao, W. The scattering of harmonic elastic anti-plane shear waves by two collinear cracks in the piezoelectric plate by using the non-local theory. Acta Mech Sinica 19, 559–566 (2003). https://doi.org/10.1007/BF02484549

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  • DOI: https://doi.org/10.1007/BF02484549

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