Journal
COMPUTERS AND GEOTECHNICS
Volume 91, Issue -, Pages 179-191Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2017.07.016
Keywords
Particle crushing; Realistic particle shape; X-ray micro-computed tomography; Spherical harmonic analysis; Discrete element method
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Funding
- National Science Foundation of China [51508216, 41630643]
- National Basic Research Program of China (973 Program) [2011CB710604]
- Fundamental Research Funds for the Central Universities of China [2017KFYXJJ139]
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This study proposed a novel approach for generating crushable agglomerates with realistic particle shapes in discrete element modeling (DEM). The morphologies of sand particles were obtained by Xray micro-computed tomography scanning and image processing. Based on the particle surface reconstructed by spherical harmonic analysis, the crushable agglomerates with realistic particle shapes can be generated in DEM simulations. The results of single particle crushing tests showed that particle shapes significantly influence the fracture patterns and crushing strengths of sand particles. Furthermore, two one-dimensional compression tests were conducted to investigate the particle shape effect on micro and macro-mechanical behaviors of crushable sands. (C) 2017 Elsevier Ltd. All rights reserved.
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