TY - JOUR
T1 - Extension of a basic hypoplastic model for overconsolidated clays
AU - Wang, Shun
AU - Wu, Wei
AU - Zhang, Dichuan
AU - Kim, Jong Ryeol
N1 - Funding Information:
This work was funded by the H2020 Marie Skłodowska-Curie Actions RISE 2017 HERCULES ( 778360 ) and FRAMED ( 734485 ); the Erasmus+KA2 project Re-built ( 2018-1-RO01-KA203-049214 ); and the Nazarbayev University Research Fund ( SOE2017001 ). The first author wishes to thank the Otto Pregl Foundation for financial support. All numerical simulations were performed using the Triax element test driver. The provider Dr. David Mašín is acknowledged.
Funding Information:
This work was funded by the H2020 Marie Sk?odowska-Curie Actions RISE 2017 HERCULES (778360) and FRAMED (734485); the Erasmus+KA2 project Re-built (2018-1-RO01-KA203-049214); and the Nazarbayev University Research Fund (SOE2017001). The first author wishes to thank the Otto Pregl Foundation for financial support. All numerical simulations were performed using the Triax element test driver. The provider Dr. David Ma??n is acknowledged.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/7
Y1 - 2020/7
N2 - This paper presents a new rate-dependent hypoplastic constitutive model for overconsolidated clays. The model is developed based on a basic hypoplastic model proposed recently for sand. New density and stiffness factors are introduced to account for history dependence. The Matsuoka-Nakai failure surface is incorporated for the limit stress criterion. With six constitutive parameters, the model is capable of predicting the hardening/softening, shear dilation/contraction, and asymptotic state for overconsolidated clays. Comparison between numerical predictions and experimental results shows this model can properly describe the main features of both reconstituted and undisturbed clays with different overconsolidation ratios.
AB - This paper presents a new rate-dependent hypoplastic constitutive model for overconsolidated clays. The model is developed based on a basic hypoplastic model proposed recently for sand. New density and stiffness factors are introduced to account for history dependence. The Matsuoka-Nakai failure surface is incorporated for the limit stress criterion. With six constitutive parameters, the model is capable of predicting the hardening/softening, shear dilation/contraction, and asymptotic state for overconsolidated clays. Comparison between numerical predictions and experimental results shows this model can properly describe the main features of both reconstituted and undisturbed clays with different overconsolidation ratios.
KW - Asymptotic state boundary surface
KW - Critical state
KW - Hypoplastic model
KW - Overconsolidation ratio
KW - Response envelope
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U2 - 10.1016/j.compgeo.2020.103486
DO - 10.1016/j.compgeo.2020.103486
M3 - Article
AN - SCOPUS:85083002002
VL - 123
JO - Computers and Geotechnics
JF - Computers and Geotechnics
SN - 0266-352X
M1 - 103486
ER -