Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand
A numerical crushable soil sample has been created using the previously published McDowell and de Bono (2013) model and subjected to a range of stress paths. Compacted sand simulations are performed using conventional triaxial stress paths, constant mean stress and constant volume conditions and a c...
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| Format: | Article |
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Thomas Telford ICE Publishing
2018
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| Online Access: | https://eprints.nottingham.ac.uk/46897/ |
| _version_ | 1848797421887291392 |
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| author | de Bono, John P. McDowell, Glenn R. |
| author_facet | de Bono, John P. McDowell, Glenn R. |
| author_sort | de Bono, John P. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | A numerical crushable soil sample has been created using the previously published McDowell and de Bono (2013) model and subjected to a range of stress paths. Compacted sand simulations are performed using conventional triaxial stress paths, constant mean stress and constant volume conditions and a critical state line established. Overconsolidated samples have been created by crushing the soil down the isotropic normal compression line, unloading, and shearing at constant radial stress, constant mean stress or constant volume and a critical state line is again established. The critical state line is unique at high stresses for the simulated compacted and overconsolidated sands and is parallel to the isotropic normal compression line, in agreement with available data and a previously published theory. The critical state line at low stress levels is non-unique and a function of the particle size distribution, in agreement with available data. Constant volume tests exhibit the well-known phenomena of phase transformation points and peak strengths are observed for ‘drained’ soils on the dense side of critical. The numerical soil produces a state boundary surface that compares well to available data. |
| first_indexed | 2025-11-14T20:03:37Z |
| format | Article |
| id | nottingham-46897 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:03:37Z |
| publishDate | 2018 |
| publisher | Thomas Telford ICE Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-468972020-05-04T19:50:45Z https://eprints.nottingham.ac.uk/46897/ Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand de Bono, John P. McDowell, Glenn R. A numerical crushable soil sample has been created using the previously published McDowell and de Bono (2013) model and subjected to a range of stress paths. Compacted sand simulations are performed using conventional triaxial stress paths, constant mean stress and constant volume conditions and a critical state line established. Overconsolidated samples have been created by crushing the soil down the isotropic normal compression line, unloading, and shearing at constant radial stress, constant mean stress or constant volume and a critical state line is again established. The critical state line is unique at high stresses for the simulated compacted and overconsolidated sands and is parallel to the isotropic normal compression line, in agreement with available data and a previously published theory. The critical state line at low stress levels is non-unique and a function of the particle size distribution, in agreement with available data. Constant volume tests exhibit the well-known phenomena of phase transformation points and peak strengths are observed for ‘drained’ soils on the dense side of critical. The numerical soil produces a state boundary surface that compares well to available data. Thomas Telford ICE Publishing 2018-07 Article PeerReviewed de Bono, John P. and McDowell, Glenn R. (2018) Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand. Geotechnique, 68 (7). pp. 575-589. ISSN 1751-7656 compressibility; discrete-element modelling; fractals; particle crushing/crushability; particle-scale behaviour http://www.icevirtuallibrary.com/doi/10.1680/jgeot.16.P.318 doi:10.1680/jgeot.16.P.318 doi:10.1680/jgeot.16.P.318 |
| spellingShingle | compressibility; discrete-element modelling; fractals; particle crushing/crushability; particle-scale behaviour de Bono, John P. McDowell, Glenn R. Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title | Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title_full | Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title_fullStr | Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title_full_unstemmed | Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title_short | Micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| title_sort | micro mechanics of drained and undrained shearing of compacted and overconsolidated crushable sand |
| topic | compressibility; discrete-element modelling; fractals; particle crushing/crushability; particle-scale behaviour |
| url | https://eprints.nottingham.ac.uk/46897/ https://eprints.nottingham.ac.uk/46897/ https://eprints.nottingham.ac.uk/46897/ |