Charles, J.A., Smith, C.C. and Black, J.A. orcid.org/0000-0002-3529-6708 (2019) Automated reconstruction of soil stress-strain response from full field displacement measurements and loading data using optimisation. In: . Proceedings of the XVII European Conference on Soil Mechanics and Geotechnical Engineering - ECSMGE. XVII European Conference on Soil Mechanics and Geotechnical Engineering - ECSMGE, 01-06 Sep 2019, Reykjavik, Iceland. International Society for Soil Mechanics and Geotechnical Engineering ISBN 9789935943613
Abstract
The significant amounts of image data that can be generated during physical model tests can provide a useful alternative and direct route to determining the stress-strain response characteristics of the soil used in the model without recourse to e.g. sampling and triaxial testing. Using optimisation, it is possible to find the stress-strain curve such that internal work calculated using the Particle Image Velocimetry (PIV) derived full-field displacement data is equal to external work. Whereas previously published work by the authors optimized for the unknown stress-strain curve by splitting it piecewise into many hundreds of segments, an alternate formulation presented in this work instead allows the description of the curve based on constitutive models, with only a handful of optimization variables necessary. FEA derived “perfect” data sets are reused to validate the new formulation. The eventual goal of the methodology is the robust application of the method to physical modelling test data, this paper presents a milestone towards this goal.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors and IGS. |
Keywords: | Back analysis; Identification method; Soil response; PIV; Optimization |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Science Research Council EP/K040316/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Mar 2021 10:24 |
Last Modified: | 08 Mar 2021 10:24 |
Published Version: | https://www.issmge.org/uploads/publications/51/75/... |
Status: | Published |
Publisher: | International Society for Soil Mechanics and Geotechnical Engineering |
Refereed: | Yes |
Identification Number: | 10.32075/17ECSMGE-2019-0343 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:171860 |