A two-surface thermomechanical model for saturated clays

Peng Yun Hong 1 Jean-Michel Pereira 1 Yu Jun Cui 1 Anh Minh Tang 1
1 NAVIER UMR 8205 - Laboratoire Navier
Abstract : This paper presents an advanced thermomechanical model – TEAM in the framework of two-surface plasticity for saturated clays, with emphasis put on some important thermomechanical features of natural clays evidenced experimentally such as the limited thermomechanical elastic zone, the smooth transition from elastic to plastic behavior. Two plastic mechanisms are introduced in the model: one is to reproduce the ther-moplasticity involving thermal expansion and contraction observed at high over-consolidation ratios and the second one describes the temperature effect on the yield behavior. The model adopts additional yield surfaces , namely inner yield surfaces that are associated with the two proposed plastic mechanisms to account for the plastic behavior inside the existing conventional thermomechanical yield surface namely yield surfaces. The general expressions of the yield surfaces and plastic potentials in p′–q–T space are introduced. A progressive plastic hardening mechanism associated with the inner yield surface is defined, enabling the plastic modulus to vary smoothly during thermomechanical loadings inside the yield surfaces. Several tests on natural Boom clay along different thermomechanical loading paths have been simulated by TEAM, and results show its relevance in describing the thermomechanical behavior of saturated clays.
Keywords : temperature effects test simulation clays two-surface model
Type de document :
Article dans une revue
International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, 2016, 40 (7), pp.1059-1080. 〈10.1002/nag.2474〉
Liste complète des métadonnées

Littérature citée [29 références]  Voir  Masquer  Télécharger
https://hal-enpc.archives-ouvertes.fr/hal-01515787
Contributeur : Anh Minh Tang <>
Soumis le : vendredi 28 avril 2017 - 16:26:31
Dernière modification le : jeudi 11 janvier 2018 - 06:25:23
Document(s) archivé(s) le : samedi 29 juillet 2017 - 13:07:57

Fichier

A two-surface thermo-mechanica...
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

IFSTTAR | ENPC | PARISTECH | UR-NAVIER | YU_JUN_CUI

Citation

Peng Yun Hong, Jean-Michel Pereira, Yu Jun Cui, Anh Minh Tang. A two-surface thermomechanical model for saturated clays. International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, 2016, 40 (7), pp.1059-1080. 〈10.1002/nag.2474〉. 〈hal-01515787〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

161

Téléchargements de fichiers

112

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD