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Observations on fabric evolution to a common micromechanical state at the soil-structure interface
Hua‐Xiang Zhu1; Wan‐Huan Zhou1,3; Xue‐Ying Jing1; Zhen‐Yu Yin2
2019-10-25
Source PublicationInternational Journal for Numerical and Analytical Methods in Geomechanics
ISSN0363-9061
Volume43Issue:15Pages:2449-2470
Abstract

The fabric plays an important role in the mechanical behavior of granular material. The aim of this paper is to investigate the evolution of fabric in a soil-structure interface (SSI) to a large shearing in an effort to clarify whether and how this form of fabric evolution can lead to a common microstructure. Using the discrete element method (DEM), two-dimensional (2D) numerical interface shear tests were carried out, and certain macromechanical and micromechanical properties were exploited. All samples exhibited prominently localized strain in a zone covering the structure's surface (named the localized zone), and much lower density and higher soil fabric anisotropy levels were found inside this zone than outside it. Disregarding different initial void ratios, a common critical state microstructure was observed in large shear deformations of soil samples, with essentially the same fabric arrangement in terms of contact orientation and internal force transmission. Due to the systematic forming, buckling, and collapsing of force chains, an angular zone (called an α-zone), in which contact density was sluggish to varying degrees, appeared and extended around the main direction of the distribution of contact orientation inside the localized zone. The gradual deterioration of the force chains' stability, as a result of an increasing void ratio, seemed to drive the α-zone's extension and lead to the rare variation of microstructures in the critical state.

KeywordCritical State Granular Material Microstructure Soil Fabric Soil-structure Interface Strain Localization
DOI10.1002/nag.2989
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Materials Science ; Mechanics
WOS SubjectEngineering, Geological ; Materials Science, Multidisciplinary ; Mechanics
WOS IDWOS:000479737800001
PublisherWILEY, 111 RIVER ST, HOBOKEN 07030-5774, NJ
Scopus ID2-s2.0-85073485827
Fulltext Access
FWCI1.664989
Citation statistics
Document TypeJournal article
CollectionTHE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorWan‐Huan Zhou
Affiliation1.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering,University of Macau,Macao
2.Department of Civil and Environmental Engineering,The Hong Kong Polytechnic University,Hung Hom,Hong Kong
3.Zhuhai UM Science & Technology Research Institute,Zhuhai,China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Hua‐Xiang Zhu,Wan‐Huan Zhou,Xue‐Ying Jing,et al. Observations on fabric evolution to a common micromechanical state at the soil-structure interface[J]. International Journal for Numerical and Analytical Methods in Geomechanics,2019,43(15):2449-2470.
APA Hua‐Xiang Zhu,Wan‐Huan Zhou,Xue‐Ying Jing,&Zhen‐Yu Yin.(2019).Observations on fabric evolution to a common micromechanical state at the soil-structure interface.International Journal for Numerical and Analytical Methods in Geomechanics,43(15),2449-2470.
MLA Hua‐Xiang Zhu,et al."Observations on fabric evolution to a common micromechanical state at the soil-structure interface".International Journal for Numerical and Analytical Methods in Geomechanics 43.15(2019):2449-2470.
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