Jian Gong, Xianwei Pang, Yu Tang, Zhonghan Yang, Jie Jiang, Xiaoduo Ou
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Effects of angularity and content of coarse particles on the mechanical behaviour of granular mixtures: a DEM study
This paper studies the effects of angularity and coarse particle content on the shear behaviour of granular mixtures via the discrete element method. The contributions of different contact types to the shear strength are quantified, which can be used to classify the structure of granular mixtures. After that, a microscopic analysis of the effect of angularity on the thresholds of the granular mixtures is presented. Finally, a method that can predict the critical friction angle of granular mixtures at arbitrary coarse particle contents is proposed. The validity of the prediction method is verified by comparisons with the experimental and numerical data in other studies.
期刊介绍：
Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science.
These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations.
>> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa.
The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.
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