Open AccessInfluence of the Loading Condition on Single Grain Crushing in DEM Simulation
Author(s) -
Majid Movahedi Rad,
Saeed Safikhani,
Erich Bauer
Publication year - 2019
Publication title -
periodica polytechnica. civil engineering/periodica polytechnica. civil engineering (online)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.406
H-Index - 19
eISSN - 1587-3773
pISSN - 0553-6626
DOI - 10.3311/ppci.14541
Subject(s) - breakage , materials science , macro , displacement (psychology) , grain size , geotechnical engineering , discrete element method , granular material , composite material , structural engineering , geology , mechanics , engineering , computer science , physics , psychology , psychotherapist , programming language
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.