Quantitative analysis of amplitude parameters for orthotropic fabric sand

LI Xue-feng; HE Yu-qi; LIU Jin-feng; HE Wei-gang

doi:10.16285/j.rsm.2017.12.029

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Quantitative analysis of amplitude parameters for orthotropic fabric sand

更新时间：2026-06-25

- Quantitative analysis of amplitude parameters for orthotropic fabric sand
- Vol. 38, Issue 12, Pages: 3619-3626(2017)
- 作者机构：
  
  1. 宁夏大学物理与电子电气工程学院,宁夏,银川,750021
  2. 宁夏大学固体力学研究所,宁夏,银川,750021
  3. 宁夏艾依河管理局,宁夏,银川,750001
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.12.029
  CLC： TU443
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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LI Xue-feng, HE Yu-qi, LIU Jin-feng, et al. Quantitative analysis of amplitude parameters for orthotropic fabric sand[J]. 2017, 38(12): 3619-3626.
DOI：

LI Xue-feng, HE Yu-qi, LIU Jin-feng, et al. Quantitative analysis of amplitude parameters for orthotropic fabric sand[J]. 2017, 38(12): 3619-3626. DOI： 10.16285/j.rsm.2017.12.029.

摘要

基于砂土细观组构描述理论，定义了新的正交各向异性幅值参量，用Toyoura砂细观试验做验证分析。非球形颗粒随机空间排列自然形成了砂土的正交各向异性，用两个独立变化的角度定量描述颗粒长轴在3个正交面上的方向分量，基于非球形颗粒随机排列的组构描述理论，分别定义了3个正交面上各向异性幅值参量的表达式。该表达式用数学概率统计的方法

将颗粒的离散特性转化为组构在平面上的可测参量，随着细观颗粒几何、物理特性的变化，3个表达式可以用于描述材料的各向同性、横观各向同性和正交各向异性。Toyoura砂细观试验分析表明，3个幅值参量能较好地反映3个正交面上幅值参量的变化规律，可为砂土细观组构的定量检测提供更为灵活的方法，而且3个各向异性都具有清晰物理意义。

Abstract

The novel amplitude parameters are proposed based on mecroscopic theory for orthotropic sand fabric

the comparative analysis is presented between the magnitude and mecroscopic test results of Toyoura sand. The random arrangement of non-spherical particles naturally forms orthotropic fabric of sand

and the three-dimensional component of its referred orientation are described with two independent angles. Based on the fabric theory of non-spherical particles randomly arranged of sand

the novel amplitude parameters of anisotropic sand on three orthogonal planes are defined. The expressions of the novel amplitude parameters are defined with the mathematical probability statistical methods

the fabric characteristics of discrete particles become the measured parameters in the plane. With the changes of the physical characteristics and geometry of microscopic particles

the amplitude parameters can be used to describe the isotropy

transversely isotropy and orthogonal anisotropy of material. Verification analysis with mecroscopic tests for Toyoura sand shows that the three amplitude parameters can describe the properties in orthogonal plane

the extensive quantitative methods of mecroscopic fabric which own a clear physical meaning are provided.

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