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论文类型：期刊论文

发表时间：2017-05-01

发表刊物：COMPUTERS AND GEOTECHNICS

收录刊物：SCIE、EI

卷号：85

页面范围：1-14

ISSN号：0266-352X

关键字：Granular mixtures; Drained biaxial tests; Peak shear strength; Thresholds; Anisotropic analysis; Contact types

摘要：This report presents a numerical investigation of the shear behavior of binary mixtures via a two-dimensional discrete element method. The effect of the coarse particle content on the peak shear strength of mixtures is investigated for different contact-type friction coefficients. A detailed analysis on the ani-sotropies enables us to understand the microscopic mechanisms that result in the dependency of the peak shear strengths on the coarse particle content. The contributions of different contact types to the peak shear strength are quantified. Lastly, the inter-particles structures are examined when the binary mixtures become coarse-particle-supported structures. (C) 2016 Elsevier Ltd. All rights reserved.