Abstract
In this study high quality experimental studies on an analogue soil in a cubical cell are compared with discrete element simulations to investigate the propagation of waves through the soil sample from a grain-scale perspective. Examination of the data resulting from the two analyses confirms the complexity surrounding interpretation methods used for small-strain stiffness evaluation. Complex, but similar, responses to perturbations generated by bender/extender piezoceramic elements in experiments and controlled movement of particles in numerical simulations were observed. In both cases tests were repeated for a range of confining pressures and the system response was interpreted to give values of the shear and constrained moduli. At a given stress level, there was good agreement between the shear modulus values, however the laboratory test data gave higher constrained modulus values.
| Original language | English |
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| Title of host publication | Geomechanics from micro to macro |
| Subtitle of host publication | proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 |
| Editors | Kenichi Soga, Krishna Kumar, Giovanna Biscontin, Matthew Kuo |
| Place of Publication | London |
| Publisher | CRC Press |
| Pages | 305-310 |
| Number of pages | 6 |
| Volume | 1 |
| ISBN (Print) | 9781138027077 |
| Publication status | Published - 26 Aug 2014 |
| Event | International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 - Cambridge, United Kingdom Duration: 1 Sept 2014 → 3 Sept 2014 http://is-cambridge.eng.cam.ac.uk/ |
Conference
| Conference | International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 |
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| Country/Territory | United Kingdom |
| City | Cambridge |
| Period | 1/09/14 → 3/09/14 |
| Internet address |