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Composites: Mechanics, Computations, Applications: An International Journal

Publicou 4 edições por ano

ISSN Imprimir: 2152-2057

ISSN On-line: 2152-2073

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00004 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.08 SJR: 0.153 SNIP: 0.178 CiteScore™:: 1 H-Index: 12

Indexed in

HIGH-FREQUENCY APPROXIMATION OF PLANE WAVE PROPAGATION IN AN ELASTIC MEDIUM WITH PERIODIC DISTRIBUTION OF CRACKS

Volume 8, Edição 4, 2017, pp. 339-354
DOI: 10.1615/CompMechComputApplIntJ.v8.i4.50
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RESUMO

In this work, we consider the propagation of plane waves in elastic media weakened by isolated open cracks with periodic distribution of their concentration. The problem under study is essentially multiscale. One can distinguish several space scales such as the characteristic size of a crack, a period of crack distribution l, wavelength λ, and the characteristic size of the sample as a whole L. We are interested in the high-frequency approximation, by which we mean the case where the wavelength is small in comparison with the macroscopic size of the problem (λ << L). In this situation, the classical multiscale homogenization does not work. However, for the case where the wavelength exceeds the characteristic size of a crack, but is of the same order of magnitude as the period of distribution of cracks concentration (λ ~ l), it is possible to perform perturbations with respect to the small parameter ε = l/L << 1 and get displacements and frequencies of oscillations in cracked media in the form of two-scale asymptotic expansions.

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