Influence of the loading condition on single grain crushing in DEM simulation

Majid Movahedi Rad*, Saeed Safikhani, Erich Bauer

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Grain crushing is of essential importance for understanding the mechanical behavior of granular materials such as sand, gravel or broken rock under higher pressures. In order to investigate the breakage mechanism of a single grain under different loading conditions, numerical simulations are carried out using DEM. Two different types of boundary conditions are considered to apply displacement-controlled load: loading using platens and loading by uncrushable macro-grains. A 2D crushable macro-grain is built up from a large number of micro-grains which are connected with respect to breakable parallel-bond properties. The response of the crushable macro-grain for different coordination numbers and location of the contact points is discussed. The numerical results show that the type of loading condition can influence the loading capacity and fragmentation patterns of the crushable macro-grain.

Original languageEnglish
Pages (from-to)1152-1158
Number of pages7
JournalPeriodica Polytechnica Civil Engineering
Volume63
Issue number4
DOIs
Publication statusPublished - 18 Dec 2019

Keywords

  • DEM
  • Fragmentation patterns
  • Grain crushing
  • Loading condition
  • Micro contact model

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

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