Shear band in sand with spatially varying density

被引：88

作者：

Borja, Ronaldo I. ^{[1
]}

Song, Xiaoyu ^{[1
]}

Rechenmacher, Amy L. ^{[2
]}

Abedi, Sara ^{[3
]}

Wu, Wei ^{[4
]}

机构：

[1] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA

[2] Univ So Calif, Dept Civil & Environm Engn, Los Angeles, CA 90089 USA

[3] MIT, Dept Civil & Environm Engn, Cambridge, MA 02139 USA

[4] Univ Bodenkultur Wien, Inst Geotech, A-1180 Vienna, Austria

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2013年 / 61卷 / 01期

基金：

美国国家科学基金会; 奥地利科学基金会;

关键词：

Bifurcation; Digital Image Correlation; Heterogeneous sand; Shear band; Strain localization; DIGITAL IMAGE CORRELATION; CAM-CLAY PLASTICITY; RAY COMPUTED-TOMOGRAPHY; FINITE-ELEMENT ANALYSIS; STRAIN LOCALIZATION; CRITICAL-STATE; IMPLICIT INTEGRATION; BRITTLE SOLIDS; VOID RATIO; EVOLUTION;

D O I：

10.1016/j.jmps.2012.07.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bifurcation theory is often used to investigate the inception of a shear band in a homogeneously deforming body. The theory predicts conjugate shear bands that have the same likelihood of triggering. For structures loaded symmetrically the choice of which of the two conjugate shear bands will persist is arbitrary. In this paper we show that spatial density variation could be a determining factor for the selection of the persistent shear band in a symmetrically loaded localizing sand body. We combine experimental imaging on rectangular sand specimens loaded in plane strain compression with mesoscale finite element modeling on symmetrically loaded sand specimens to show that spatial heterogeneity in density does have a profound impact on the persistent shear band. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：219 / 234

页数：16

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