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Fracture analysis of a penny-shaped magnetically dielectric crack in a magnetoelectroelastic material

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Abstract

In this paper we investigate the magnetoelectroelastic behavior induced by a penny-shaped crack in a magnetoelectroelastic material. The crack is assumed to be magnetically dielectric. A closed-form solution is derived by virtue of Hankel transform technique with the introduction of certain auxiliary functions. Field intensity factors are obtained and analyzed. The results indicate that the stress intensity factor depends only on the mechanical loads. However, all the other field intensity factors depend directly on both the magnetic and dielectric permeabilities inside the crack as well as on the applied magnetoelectromechanical loads and the material properties of the magnetoelectroelastic material. Several special cases are further discussed, with the reduced results being in agreement with those from literature. Finally, according to the maximum crack opening displacement (COD) criterion, the effects of the magnetoelectromechanical loads and the crack surface conditions on the crack propagation and growth are evaluated.

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Authors and Affiliations

  1. Department of Engineering Mechanics, Shijiazhuang Railway Institute, Shijiazhuang, 050043, P.R. China

    W. J. Feng

  2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, P.R. China

    R. K. L. Su

  3. Department of Civil Engineering, The University of Akron, Akron, OH, 44325, USA

    E. Pan

Authors
  1. W. J. Feng
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  2. R. K. L. Su
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  3. E. Pan
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Correspondence to R. K. L. Su.

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Feng, W.J., Su, R.K.L. & Pan, E. Fracture analysis of a penny-shaped magnetically dielectric crack in a magnetoelectroelastic material. Int J Fract 146, 125–138 (2007). https://doi.org/10.1007/s10704-007-9150-x

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  • DOI: https://doi.org/10.1007/s10704-007-9150-x

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