Effects of angularity and content of coarse particles on the mechanical behaviour of granular mixtures: a DEM study

IF 2.3 3区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Granular Matter Pub Date : 2024-01-12 DOI:10.1007/s10035-023-01386-z

Jian Gong, Xianwei Pang, Yu Tang, Zhonghan Yang, Jie Jiang, Xiaoduo Ou

引用次数: 0

Abstract

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.

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粗颗粒的角度和含量对颗粒混合物机械性能的影响：DEM 研究

本文通过离散元方法研究了角度和粗颗粒含量对颗粒混合物剪切行为的影响。本文量化了不同接触类型对剪切强度的贡献，可用于对颗粒混合物的结构进行分类。随后，介绍了角度对颗粒混合物阈值影响的微观分析。最后，提出了一种可以预测任意粗颗粒含量下颗粒混合物临界摩擦角的方法。通过与其他研究中的实验和数值数据进行比较，验证了预测方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Granular Matter Materials Science-General Materials Science

CiteScore

4.60

自引率

8.30%

发文量

审稿时长

6 months

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.