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A penny-shaped interface crack between a functionally graded piezoelectric layer and a homogeneous piezoelectric layer

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Abstract

The problem of a penny-shaped interface crack between a functionally graded piezoelectric layer and a homogeneous piezoelectric layer is investigated. The surfaces of the composite structure are subjected to both mechanical and electrical loads. The crack surfaces are assumed to be electrically impermeable. Integral transform method is employed to reduce the problem to a Fredholm integral equation of the second kind. The stress intensity factor, electric displacement intensity factor and energy release rate are derived, some typical numerical results are plotted graphically. The effects of electrical loads, material nonhomogeneity and crack configuration on the fracture behaviors of the cracked composite structure are analyzed in detail.

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Authors and Affiliations

  1. Institute of Engineering Mechanics, Northeastern University, Shenyang, 110004, China

    Y. S. Li & Z. H. Xu

  2. Department of Engineering Mechanics, Shijiazhuang Railway Institute, Shijiazhuang, 050043, China

    W. J. Feng

Authors
  1. Y. S. Li
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  2. W. J. Feng
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  3. Z. H. Xu
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Correspondence to W. J. Feng.

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Li, Y.S., Feng, W.J. & Xu, Z.H. A penny-shaped interface crack between a functionally graded piezoelectric layer and a homogeneous piezoelectric layer. Meccanica 44, 377–387 (2009). https://doi.org/10.1007/s11012-008-9177-8

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  • DOI: https://doi.org/10.1007/s11012-008-9177-8

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