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An elastic–viscoplastic constitutive model incorporating shear dilation characteristic
Pan Ding1; Yayuan Hu1; Wanhuan Zhou2; Xingwang Liu3; Riqing Xu1,4
Source PublicationArabian Journal of Geosciences

A three-dimensional elastic–viscoplastic (3D EVP) model focusing on shear hardening is proposed to describe the time-dependent behaviors of sand. In developing this model, a one-dimensional elastic–viscoplastic (1D EVP) equation of deviatoric stress–strain–strain rate is first derived based on the analysis of stress relaxation tests on four different sands and the equivalent time method suggested by Yin and Graham. Subsequently, the 1D EVP equation is generalized into triaxial state by referring Lade-Duncan’s elastic–plastic theory and Perzyna’s overstress theory. The proposed 3D EVP model incorporates shear yield criterion, non-associated flow rule, and strain-hardening law, which makes it possible for the model to describe the rate effects and shear dilation characteristic. Finally, numerical solutions are obtained using the fourth-order Runge-Kutta method, and the model is calibrated and verified through several experiments. It is demonstrated that the new model is capable of predicting rheological behaviors of dilatant sand, especially the shear-induced volumetric responses.

KeywordSand Time Dependence 3d Elastic–viscoplastic Constitutive Model Shear Dilation Equivalent Time Method
URLView the original
Indexed BySCIE
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000574574200001
Scopus ID2-s2.0-85091306819
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
Corresponding AuthorYayuan Hu
Affiliation1.Research Center of Coastal and Urban Geotechnical Engineering,Zhejiang University,Hangzhou,310058,China
2.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering,University of Macau,999078,Macao
3.Zhejiang Province Institute of Architectural Design and Research,Hangzhou,310006,China
4.Engineering Research Center of Urban Underground Space Development of Zhejiang Province,Hangzhou,310058,China
Recommended Citation
GB/T 7714
Pan Ding,Yayuan Hu,Wanhuan Zhou,et al. An elastic–viscoplastic constitutive model incorporating shear dilation characteristic[J]. Arabian Journal of Geosciences,2020,13(19).
APA Pan Ding,Yayuan Hu,Wanhuan Zhou,Xingwang Liu,&Riqing Xu.(2020).An elastic–viscoplastic constitutive model incorporating shear dilation characteristic.Arabian Journal of Geosciences,13(19).
MLA Pan Ding,et al."An elastic–viscoplastic constitutive model incorporating shear dilation characteristic".Arabian Journal of Geosciences 13.19(2020).
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