Abstract
The interaction of anti-plane elastic SH waves with a periodic array of interface cracks in a multi-layered periodic medium is analyzed in this paper. A perfect periodic structure without interface cracks is first studied and the transmission displacement coefficient is obtained based on the transfer matrix method in conjunction with the Bloch-Floquet theorem. This is then generalized to a single and periodic distribution of cracks at the center interface and the result is compared with that of perfect periodic cases without interface cracks. The dependence of the transmission displacement coefficient on the frequency of the incident wave, the influences of material combination, crack configuration and incident angle are discussed in detail. Compared with the corresponding perfect periodic structure without interface cracks, a new phenomenon is found in the periodic layered system with a single and periodic array of interface cracks.
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Project supported by the National Natural Science Foundation of China (Nos. 11002026 and 11372039), Beijing Natural Science Foundation (No. 3133039) and the Scientific Research Foundation for the Returned (No. 20121832001).
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Yan, Z., Wei, C. & Zhang, C. Elastic SH Wave Propagation in Periodic Layered Composites with a Periodic Array of Interface Cracks. Acta Mech. Solida Sin. 28, 453–463 (2015). https://doi.org/10.1016/S0894-9166(15)30041-0
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DOI: https://doi.org/10.1016/S0894-9166(15)30041-0