Critical-state-based Mohr-Coulomb plasticity model for sands

被引：12

作者：

Woo, Sang Inn ^{[1
]}

Seo, Hoyoung ^{[2
]}

Kim, Joonyoung ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Civil & Environm Engn, 1 Gwanak Ro, Seoul, South Korea

[2] Texas Tech Univ, Dept Civil Environm & Construct Engn, 911 Boston Ave, Lubbock, TX 79409 USA

来源：

COMPUTERS AND GEOTECHNICS | 2017年 / 92卷

基金：

新加坡国家研究基金会;

关键词：

Constitutive model; Plasticity; Dilatancy; Critical state; Sand; THRESHOLD SHEAR STRAINS; MATERIAL POINT METHOD; 2-SURFACE PLASTICITY; DEPENDENT DILATANCY; LARGE-DEFORMATION; CONE PENETRATION; ERROR CONTROL; SOILS; GEOMECHANICS; LIQUEFACTION;

D O I：

10.1016/j.compgeo.2017.08.001

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper presents a refined Mohr-Coulomb model for sands based on the critical state theory. The refined model adjusts a dilatancy angle based on the state parameter with respect to the critical state line. Furthermore, a friction angle is decomposed into the critical state friction angle and a portion of the dilatancy angle to capture the peak phenomenon of dilative sands. The elemental simulations of the drained and undrained triaxial compression tests on Toyoura sand using the refined model showed much better performance than the conventional Mohr-Coulomb model. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：179 / 185

页数：7

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