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The role of rolling friction in granular packing

机译:滚动摩擦在粒状填料中的作用

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摘要

In order to study the effects of the rolling friction of the particles on granular packing, we present a detailed analysis of circular disk assemblies with the rolling friction under macroscopic one-dimensional compression. The rolling friction of the particles produces a resisting moment to the rolling at each contact. A series of 2-D DEM simulations are performed with various values for the rolling friction parameter. We focus on several macroscopic and microstruc-tural properties of granular media and analyze them as a functions of the rolling friction. From these results, we show that the rolling resistance, which results from the rolling friction of the particles, contributes to the inhibition of the rearrangement of the particles and increases the magnitude of the fabric anisotropy under packing. In addition, from both microscopic and macroscopic points of view, we describe that the stress state in a granular packing can vary considerably depending on the rolling resistance.
机译:为了研究颗粒的滚动摩擦对粒状填料的影响,我们对宏观一维压缩下具有滚动摩擦的圆盘组件进行了详细分析。颗粒的滚动摩擦会在每次接触时产生抵抗滚动的力矩。对滚动摩擦参数使用各种值执行一系列的2-DEM模拟。我们关注粒状介质的几种宏观和微观结构特性,并将其作为滚动摩擦的函数进行分析。从这些结果,我们表明,由颗粒的滚动摩擦引起的滚动阻力有助于抑制颗粒的重排,并增加了填充时织物各向异性的幅度。另外,从微观和宏观的角度来看,我们都描述了颗粒状填料中的应力状态会根据滚动阻力而发生很大变化。

著录项

  • 来源
    《Granular matter》 |2013年第2期|175-182|共8页
  • 作者单位

    Graduate School of Agriculture, Kyoto University,Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan;

    Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology (JAMSTEC),3173-25 Showa-machi, Yokohama 236-0001, Japan;

    Graduate School of Agriculture, Kyoto University,Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    granular packing; rolling friction; force transmission; anisotropy;

    机译:粒状填料滚动摩擦力传递各向异性;

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