Experimental and numerical assessment of a cubical sample produced by pluviation

J. F. Camenen*, I. Cavarretta, S. Hamlin, E. Ibraim

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)

Abstract

A pluviation device for the fabrication of cubical samples of granular materials has been recently developed. The granular material is pluviated under gravitational loading through a rectangular Perspex tube. The pluviator is also designed to allow the control of the height of fall. Using a highspeed camera, observations of sample construction of uniformly graded spherical coarse glass ballotini have been made from one side of the apparatus and macro-scale properties of the created granular assembly (such as void ratio and density) have been assessed. This work focuses on the development of a three-dimensional discrete numerical model, based on the contact dynamics method, which simulates the whole fabrication process and provides detailed investigation of the micro-scale properties (energetic layer) and material inherent fabric (formation of ordered structure and wall effects, distribution of the orientations of the normal particle contacts).

Original languageEnglish
Pages (from-to)44-51
Number of pages8
JournalGéotechnique Letters
Volume3
DOIs
Publication statusPublished - 2013

Keywords

  • discrete-element modelling
  • fabric/structure of soils
  • laboratory equipment
  • laboratory tests
  • particle-scale behaviour
  • GRANULAR TEMPERATURE

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