Evolution of Granular Contact Gain, Loss and Movement Under Shear Studied Using Synchrotron X-ray Micro-tomography

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Detail(s)

Original languageEnglish
Title of host publicationMicro to MACRO Mathematical Modelling in Soil Mechanics
EditorsPasquale Giovine, Paolo Maria Mariano, Giuseppe Mortara
PublisherSpringer Nature Switzerland AG
Pages81-88
ISBN (Electronic)9783319994741
ISBN (Print)9783319994734
Publication statusPublished - May 2018

Publication series

NameTrends in Mathematics
ISSN (Print)2297-0215
ISSN (Electronic)2297-024X

Conference

Title2018 International Symposium on Micro to Macro Mathematical Modelling in Soil Mechanics
LocationUniversity Mediterranea of Reggio Calabria
PlaceItaly
CityReggio Calabria
Period29 May - 1 June 2018

Abstract

Inter-particle contact is an important grain-scale characteristic of granular materials that essentially governs their macro-scale mechanical response. In the current study, the evolution of inter-particle contacts (i.e., the contact gain, contact loss and contact movement) within a dry glass beads sheared under a low confining pressure is investigated. The test is carried out in a miniature triaxial apparatus, and high-resolution synchrotron X-ray micro-tomography is used to scan the sample for the full-field CT images in different loading stages. A series of image processing and analysis techniques, in combination with a particle-tracking approach, is used to detect the inter-particle contacts and determine the contact gain, loss and movement during each shear increment. The effects of the contact gain and loss, as well as the contact movement on the fabric evolution of the sample are examined. It is found that they are two competing factors in determining the fabric anisotropy evolution.

Research Area(s)

  • Contact gain and contact loss, Contact movement, Granular material, Shear, X-ray micro-tomography

Citation Format(s)

Evolution of Granular Contact Gain, Loss and Movement Under Shear Studied Using Synchrotron X-ray Micro-tomography. / Cheng, Zhuang; Wang, Jianfeng.

Micro to MACRO Mathematical Modelling in Soil Mechanics. ed. / Pasquale Giovine; Paolo Maria Mariano; Giuseppe Mortara. Springer Nature Switzerland AG, 2018. p. 81-88 (Trends in Mathematics).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)