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Modeling the viscous behavior of frozen soil with hypoplasticity
Author(s) -
Xu Guofang,
Wu Wei,
Qi Jilin
Publication year - 2016
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.2516
Subject(s) - creep , constitutive equation , geotechnical engineering , viscous liquid , mechanics , compression (physics) , geology , materials science , calculus (dental) , structural engineering , engineering , physics , composite material , finite element method , medicine , dentistry
Summary This paper presents a hypoplastic constitutive model for the viscous behavior of frozen soil. The model is composed of a ‘solid’ part and a ‘fluid’ part. The solid part is based on the extended hypoplastic model, and the fluid part is dependent on the second time derivative of strain. The performance of the model is demonstrated by simulating some uniaxial compression tests at different strain rates. Moreover, the model can describe in a unified way the three stages of typical creep tests, that is, primary, secondary, and tertiary stage. Copyright © 2016 John Wiley & Sons, Ltd.