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合成材料:力学,计算和应用

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ISSN 打印: 2152-2057

ISSN 在线: 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

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LOW-FREQUENCY WAVE PROPAGATION IN GEOLOGICAL MEDIA WITH ISOLATED CRACKS

卷 8, 册 2, 2017, pp. 85-107
DOI: 10.1615/CompMechComputApplIntJ.v8.i2.10
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摘要

In this work, we study plane wave propagation in preloaded elastic media weakened by cracks with periodically distributed degree of fracturing. We assume the cracks to be isolated closed penny-shaped, randomly oriented. We take into account the Coulomb friction between the crack faces. We propose a multiple scales approach which allows us to replace real heterogeneous material by homogenized effective media. We show that the effective characteristics of homogenized media depend on the parameters of structure at the micro- (isolated cracks) and mesoscale (characteristic size of periodic distribution of the degree of fracturing). As a result, we have obtained expressions for displacements and velocities of transverse and longitudinal waves in effective media, and studied how these quantities can be influenced by external stresses, elastic modulus values, Coulomb's friction coefficient, degree of fracturing, and by the direction of wave propagation.

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