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Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule

Authorized Users Only
2017
Authors
Jocković, Sanja
Vukićević, Mirjana
Article (Published version)
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Abstract
The paper presents a critical state bounding surface constitutive model for describing the behaviour of overconsolidated clays for a wide range of overconsolidation ratios, called the Hardening State Parameter - HASP model. Keeping the simplicity and the same set of the parameters as Modified Cam Clay, the HASP model provides a more realistic description of numerous elements of clay behaviour. With the new state parameter formulation of the hardening rule, elasto-plastic behaviour is enabled from early stages of loading. In undrained conditions, general shape of effective stress paths for various over consolidation ratios and negative pore pressure is well predicted. In drained conditions, strain hardening, strain softening, as well as smooth transition from contractive to dilatant behaviour before the peak strength is reached are described. Verification is done against published results of drained and undrained tests in triaxial compression and extension, on the samples with various o...verconsolidation ratios.

Keywords:
Constitutive model / Overconsolidated clays / Hardening rule / State parameter
Source:
Computers and Geotechnics, 2017, 83, 16-29
Publisher:
  • Elsevier Ltd

DOI: 10.1016/j.compgeo.2016.10.013

ISSN: 0266-352X

WoS: 000393252300002

Scopus: 2-s2.0-84994000129
[ Google Scholar ]
28
23
URI
https://grafar.grf.bg.ac.rs/handle/123456789/893
Collections
  • Radovi istraživača / Researcher's publications
  • Катедра за грађевинску геотехнику
Institution/Community
GraFar
TY  - JOUR
AU  - Jocković, Sanja
AU  - Vukićević, Mirjana
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/893
AB  - The paper presents a critical state bounding surface constitutive model for describing the behaviour of overconsolidated clays for a wide range of overconsolidation ratios, called the Hardening State Parameter - HASP model. Keeping the simplicity and the same set of the parameters as Modified Cam Clay, the HASP model provides a more realistic description of numerous elements of clay behaviour. With the new state parameter formulation of the hardening rule, elasto-plastic behaviour is enabled from early stages of loading. In undrained conditions, general shape of effective stress paths for various over consolidation ratios and negative pore pressure is well predicted. In drained conditions, strain hardening, strain softening, as well as smooth transition from contractive to dilatant behaviour before the peak strength is reached are described. Verification is done against published results of drained and undrained tests in triaxial compression and extension, on the samples with various overconsolidation ratios.
PB  - Elsevier Ltd
T2  - Computers and Geotechnics
T1  - Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule
EP  - 29
SP  - 16
VL  - 83
DO  - 10.1016/j.compgeo.2016.10.013
ER  - 
@article{
author = "Jocković, Sanja and Vukićević, Mirjana",
year = "2017",
abstract = "The paper presents a critical state bounding surface constitutive model for describing the behaviour of overconsolidated clays for a wide range of overconsolidation ratios, called the Hardening State Parameter - HASP model. Keeping the simplicity and the same set of the parameters as Modified Cam Clay, the HASP model provides a more realistic description of numerous elements of clay behaviour. With the new state parameter formulation of the hardening rule, elasto-plastic behaviour is enabled from early stages of loading. In undrained conditions, general shape of effective stress paths for various over consolidation ratios and negative pore pressure is well predicted. In drained conditions, strain hardening, strain softening, as well as smooth transition from contractive to dilatant behaviour before the peak strength is reached are described. Verification is done against published results of drained and undrained tests in triaxial compression and extension, on the samples with various overconsolidation ratios.",
publisher = "Elsevier Ltd",
journal = "Computers and Geotechnics",
title = "Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule",
pages = "29-16",
volume = "83",
doi = "10.1016/j.compgeo.2016.10.013"
}
Jocković, S.,& Vukićević, M.. (2017). Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule. in Computers and Geotechnics
Elsevier Ltd., 83, 16-29.
https://doi.org/10.1016/j.compgeo.2016.10.013
Jocković S, Vukićević M. Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule. in Computers and Geotechnics. 2017;83:16-29.
doi:10.1016/j.compgeo.2016.10.013 .
Jocković, Sanja, Vukićević, Mirjana, "Bounding surface model for overconsolidated clays with new state parameter formulation of hardening rule" in Computers and Geotechnics, 83 (2017):16-29,
https://doi.org/10.1016/j.compgeo.2016.10.013 . .

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