Skip to main content

Research Repository

See what's under the surface

Advanced Search

On the micro mechanics of one-dimensional normal compression

McDowell, Glenn R.; de Bono, John P.

Authors

Glenn R. McDowell glenn.mcdowell@nottingham.ac.uk

John P. de Bono evxjd1@exmail.nottingham.ac.uk



Abstract

Discrete-element modelling has been used to investigate the micro mechanics of one-dimensional compression. One-dimensional compression is modelled in three dimensions using an oedometer and a large number of particles, and without the use of agglomerates. The fracture of a particle is governed by the octahedral shear stress within the particle due to the multiple contacts and a Weibull distribution of strengths. Different fracture mechanisms are considered, and the influence of the distribution of fragments produced for each fracture on the global particle size distribution and the slope of the normal compression line is investigated. Using the discrete-element method, compression is related to the evolution of a fractal distribution of particles. The compression index is found to be solely a function of the strengths of the particles as a function of size.

Journal Article Type Article
Publication Date Sep 1, 2015
Journal Geotechnique
Print ISSN 0016-8505
Electronic ISSN 1751-7656
Publisher Thomas Telford
Peer Reviewed Peer Reviewed
Volume 63
Issue 11
APA6 Citation McDowell, G. R., & de Bono, J. P. (2015). On the micro mechanics of one-dimensional normal compression. Géotechnique, 63(11), doi:10.1680/geot.12.P.041
DOI https://doi.org/10.1680/geot.12.P.041
Keywords compressibility ; discrete-element modelling ; fractals ; particle crushing/crushability ; particle-scale behaviour
Publisher URL http://www.icevirtuallibrary.com/content/article/10.1680/geot.12.P.041;jsessionid=4l480pd9cff7u.x-telford-live-01
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

Files

McDowell_and_de_Bono_2013.pdf (3.1 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf



You might also like



Downloadable Citations

;