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 - 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 |
Publisher | Taylor & Francis |
Pages | 305-310 |
Volume | 1 |
ISBN (Print) | 978-1-138-02707-7 |
Publication status | Published - 2015 |
Event | International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 - Cambridge, United Kingdom Duration: 1 Sept 2014 → 3 Sept 2014 |
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 |