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Moving Dugdale crack along the interface of two dissimilar magnetoelectroelastic materials

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Abstract

In this paper, the concept of Dugdale crack model and Yoffe model is extended to propose a moving Dugdale interfacial crack model, and the interfacial crack between dissimilar magnetoelectroelastic materials under anti-plane shear and in-plane electric and magnetic loadings is investigated considering the magneto-electro-mechanical nonlinearity. It is assumed that the constant moving crack is magneto-electrically permeable and the length of the crack keeps constant. Fourier transform is applied to reduce the mixed boundary value problem of the crack to dual integral equations, which are solved exactly. The explicit expression of the size of the yield zone is derived, and the crack sliding displacement (CSD) is explicitly expressed. The result shows that the stress, electric and magnetic fields in the cracked magnetoelectroelastic material are no longer singular and the CSD is dependent on the loading, material properties and crack moving velocity. The current model can be reduced to the static interfacial crack case when the crack moving velocity is zero.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Alberta, Edmonton, AB, T6G 2G8, Canada

    Keqiang Hu, Zengtao Chen & Jiawei Fu

  2. Department of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

    Jiawei Fu

Authors
  1. Keqiang Hu
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  2. Zengtao Chen
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  3. Jiawei Fu
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Correspondence to Keqiang Hu.

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Hu, K., Chen, Z. & Fu, J. Moving Dugdale crack along the interface of two dissimilar magnetoelectroelastic materials. Acta Mech 226, 2065–2076 (2015). https://doi.org/10.1007/s00707-015-1298-2

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  • DOI: https://doi.org/10.1007/s00707-015-1298-2

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