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An expression for the stiffness coefficient of a rectangular sample of granular material with random packing structure

机译:具有随机堆积结构的颗粒状矩形样品的刚度系数表达式

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摘要

We established a parallel-column model for a rectangular sample of heterogeneous granular material with random packing structure in a biaxial test. Within the framework of the proposed model, an expression for the stiffness coefficient of the rectangular granular sample is derived. The stiffness coefficient can be predicted using the proposed expression without microscopic analysis of the granular sample. To quantify the amount of grain crushing, the concept of relative breakage is adopted. The relative breakage parameter is then introduced into the proposed expression. Numerical results demonstrate the validity of the derived expression and show the effect of grain crushing on the stiffness coefficient of a granular sample.
机译:我们在双轴测试中为具有随机堆积结构的异质颗粒材料的矩形样品建立了平行柱模型。在提出的模型的框架内,得出了矩形颗粒样品刚度系数的表达式。可以使用建议的表达式预测刚度系数,而无需对颗粒状样品进行微观分析。为了量化谷物的破碎量,采用相对破损的概念。然后将相对破损参数引入建议的表达式中。数值结果证明了推导表达式的有效性,并表明了颗粒破碎对颗粒样品刚度系数的影响。

著录项

  • 来源
    《Granular matter》 |2014年第4期|583-595|共13页
  • 作者

    Liang Yuan-bo; Li Xi-kui;

  • 作者单位

    State Key Laboratory for Structural Analysis of Industrial Equipment,Dalian University of Technology, Dalian 116024, China;

    State Key Laboratory for Structural Analysis of Industrial Equipment,Dalian University of Technology, Dalian 116024, China;

  • 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

    Stiffness coefficient; Rectangular granular sample; Random packing structure; Grain crushing;

    机译:刚度系数;矩形颗粒状样品;随机包装结构;谷物粉碎;

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