Abstract
The 2D problem of a time-harmonic plane shear horizontal (SH) wave scattered by a finite closed crack in an isotropic material is presented in the paper. The crack is arbitrarily orientated with regard to the incident wave. A spring model based on the assumption that the traction components on the crack surfaces are linearly related to the crack opening displacement (COD) is used to model the closed crack. The problem is formulated in a set of boundary integral equations which contains the CODs as unknowns. Numerical examples are presented for the CODs, elastodynamic stress intensity factors, and the scattered displacement field for various parameters, such as spring stiffness, crack sizes and crack orientations. The results show that both the crack closure and orientation have significant effects on the scattered displacement field for the closed crack.
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Chen, B.J., Du, C.L., Zhang, J.L. et al. Scattering of SH waves by an arbitrarily orientated closed crack. Acta Mech 224, 2649–2662 (2013). https://doi.org/10.1007/s00707-013-0887-1
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DOI: https://doi.org/10.1007/s00707-013-0887-1