Elastoplastic model with loading memory surfaces (LMS) for monotonic and cyclic behaviour of geomaterials |
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Authors: | Hervé di Benedetto Matthieu Blanc Samir Tiouajni Alan Ezaoui |
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Affiliation: | 1. University of Lyon, ENTPE, Laboratoire LGCB et LTDS (UMR CNRS 5513), , 69518 Vaulx‐en‐Velin, France;2. Department of Geotechnical Engineering and Risks, Physical Modelling in Geotechnics Group, LUNAM University, IFSTTAR, , F‐44341 Bouguenais, France;3. CETE Lyon, Laboratoire Régional d'Autun, , Autun, France |
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Abstract: | A new elastoplastic model called loading memory surface based on the critical state concept and the multi‐surface framework is proposed for geomaterials. The model uses a hypoelastic formulation and two plastic mechanisms. The formulations of the model are made in three‐dimensional stress–strain space and work under both monotonic and cyclic loadings. A newly introduced formalism makes it possible to obtain the cyclic response directly from the monotonic loading one. This formalism gives a three‐dimensional generalization of the well‐known Masing rule. The model has been validated against test results of Hostun sand under several conditions: monotonic and cyclic, drained and undrained, tests in compression and in extension, and at different confining pressures and different densities. Copyright © 2014 John Wiley & Sons, Ltd. |
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Keywords: | constitutive model elasticity plasticity yield surface hardening geomaterial simulation experiments |
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