Development of Discrete Element Code Considering the Characteristics of Clay

商翔宇; 鲁巨明; 杨晨; 周国庆

doi:10.13409/j.cnki.jdpme.2016.04.022

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Development of Discrete Element Code Considering the Characteristics of Clay

更新时间：2025-12-11

- Development of Discrete Element Code Considering the Characteristics of Clay
- Vol. 36, Issue 4, Pages: 657-663(2016)
- 作者机构：
- 作者简介：
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- DOI：10.13409/j.cnki.jdpme.2016.04.022
  CLC： U442
- Published：2016
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[1]商翔宇,鲁巨明,杨晨,周国庆.考虑黏土特性的离散元程序开发[J].防灾减灾工程学报,2016,36(04):657-663.

商翔宇, 鲁巨明, 杨晨, et al. Development of Discrete Element Code Considering the Characteristics of Clay[J]. 2016, 36(4): 657-663.
[1]商翔宇,鲁巨明,杨晨,周国庆.考虑黏土特性的离散元程序开发[J].防灾减灾工程学报,2016,36(04):657-663. DOI： 10.13409/j.cnki.jdpme.2016.04.022.

商翔宇, 鲁巨明, 杨晨, et al. Development of Discrete Element Code Considering the Characteristics of Clay[J]. 2016, 36(4): 657-663. DOI： 10.13409/j.cnki.jdpme.2016.04.022.

摘要

黏土的宏观力学性质与其微观结构密切关联

而离散单元法是研究岩土材料力学行为宏微观联系的重要工具。但是目前绝大多数离散元程序主要针对无黏性颗粒土而开发

能用于黏土研究的离散元程序十分少见。介绍了自主开发的考虑黏土颗粒的薄板形状以及颗粒间复杂物理-化学作用力的黏土离散元模拟程序

以及程序中碰撞检测和颗粒间双电层斥力、范德华力以及Born斥力的计算模块。最后

给出了一个基于该程序的简单模拟实例

初步验证了其合理性。

Abstract

Macro mechanical properties of clayey soil are closely related to its microstructure

and discrete element method is an important tool to study the macro-micro link of mechanical behavior of geo-material.However

the majority of the present discrete element software package are developed for non-cohesive granular soil

and discrete element code applicable to clayey soil is rare.In this paper

we present a discrete element code for clayey soil which has taken account of the platy shape of clay particle and complicate physical-chemical interaction between clay particles.Especially

this paper highlights the collision detection and the calculation of double layer repulsive force

Van der Waals attractive force and Born repulsive force between clay particles.Finally

a simple application of the present discrete element code is given to validate its rationality preliminarily.

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references

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粘性土各向异性特性的PFC数值模拟 [J]. 高彦斌,王江锋,叶观宝,李伟,徐超. 工程地质学报 . 2009(05)

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Numerical simulation of pore fluid characteristic effect on the volume change behavior of montmorillonite clays [J] . H. Bayesteh,A.A. Mirghasemi. Computers and Geotechnics . 2013

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Empirical Estimation of Double‐Layer Repulsive Force between Two Inclined Clay Particles of Finite Length [J] . Ning Lu,A. Anandarajah. Journal of Geotechnical Engineering . 1992 (4)

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