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A crack along a part of an interface electrode in a piezoelectric bimaterial under anti-plane mechanical and in-plane electric loadings

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Abstract

An electrically conducting crack along a part of an electrode in the interface of a piezoelectric bimaterial under the action of anti-plane mechanical and in-plane electric loadings is analyzed. The electrode is assumed to be much thinner than the piezoelectric material, and therefore, its mechanical properties are neglected. Using special representations of field variables via sectionally analytic functions, a combined Dirichlet–Riemann boundary value problem is formulated and solved analytically. Explicit expressions for the shear stress, the electric field and the crack faces’ sliding displacement are derived. These quantities are also presented graphically along the corresponding parts of the material interface. The intensity factors for stress and electric field are determined as well. The dependencies of the mentioned values on the magnitude of the external electric loading and different ratios of the crack and electrode lengths are presented.

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Acknowledgements

Part of this work was executed during a stay of V. G. at Karlsruhe Institute of Technology (KIT). The authors gratefully acknowledge the support from KIT by funding the guest stay of V. G.

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Authors and Affiliations

  1. Department of Computational Mathematics, Oles Honchar Dnipro National University, Gagarin Av. 72, Dnipro, 49010, Ukraine

    V. Govorukha & A. Sheveleva

  2. Institute of Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany

    M. Kamlah

Authors
  1. V. Govorukha
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  2. A. Sheveleva
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  3. M. Kamlah
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Correspondence to V. Govorukha.

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Govorukha, V., Sheveleva, A. & Kamlah, M. A crack along a part of an interface electrode in a piezoelectric bimaterial under anti-plane mechanical and in-plane electric loadings. Acta Mech 230, 1999–2012 (2019). https://doi.org/10.1007/s00707-019-2364-y

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  • DOI: https://doi.org/10.1007/s00707-019-2364-y

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