{"title":"Interparticle forces distribution in granular materials: link with the macroscopic behaviour","authors":"Francesco Calvetti, Fabrice Emeriault","doi":"10.1002/(SICI)1099-1484(199905)4:3<247::AID-CFM62>3.0.CO;2-V","DOIUrl":null,"url":null,"abstract":"<p>This paper addresses the modelling of the incremental behaviour of an idealized granular material and its link with the distribution of contact forces within the representative volume. Based on the results obtained from a series of numerical DEM experiments, a discussion of the different operations used in a micro mechanical modelling framework is proposed. First, the relevance of the usual description of the contact forces distribution through its average value for a given contact orientation is evaluated. Next, this description is implemented in a complete homogenization process. The derived stress–strain relationship acceptably predicts the anisotropic elastic properties of the material provided that the particles do not rotate but fails to if this constraint is removed. Therefore, in the last section, a more refined description of the contact forces distribution is invoked, considering the actual scatter from the average values through the standard deviation. Copyright © 1999 John Wiley & Sons, Ltd.</p>","PeriodicalId":100899,"journal":{"name":"Mechanics of Cohesive-frictional Materials","volume":"4 3","pages":"247-279"},"PeriodicalIF":0.0000,"publicationDate":"1999-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/(SICI)1099-1484(199905)4:3<247::AID-CFM62>3.0.CO;2-V","citationCount":"27","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanics of Cohesive-frictional Materials","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/%28SICI%291099-1484%28199905%294%3A3%3C247%3A%3AAID-CFM62%3E3.0.CO%3B2-V","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 27
Abstract
This paper addresses the modelling of the incremental behaviour of an idealized granular material and its link with the distribution of contact forces within the representative volume. Based on the results obtained from a series of numerical DEM experiments, a discussion of the different operations used in a micro mechanical modelling framework is proposed. First, the relevance of the usual description of the contact forces distribution through its average value for a given contact orientation is evaluated. Next, this description is implemented in a complete homogenization process. The derived stress–strain relationship acceptably predicts the anisotropic elastic properties of the material provided that the particles do not rotate but fails to if this constraint is removed. Therefore, in the last section, a more refined description of the contact forces distribution is invoked, considering the actual scatter from the average values through the standard deviation. Copyright © 1999 John Wiley & Sons, Ltd.
颗粒材料中颗粒间力的分布:与宏观行为的联系
本文讨论了理想颗粒材料增量行为的建模及其与代表性体积内接触力分布的联系。基于一系列数值DEM实验的结果,提出了在微观力学建模框架中使用的不同操作的讨论。首先,评估了通过给定接触方向的平均值对接触力分布的通常描述的相关性。接下来,在完全均质化过程中实施该描述。导出的应力-应变关系可接受地预测材料的各向异性弹性特性,前提是颗粒不旋转,但如果去除该约束,则无法旋转。因此,在最后一节中,对接触力分布进行了更精细的描述,考虑到从平均值到标准偏差的实际分散。版权所有©1999 John Wiley&;有限公司。
本文章由计算机程序翻译,如有差异,请以英文原文为准。