Modelling undrained behaviour of sand with fines and fabric anisotropy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00550094" target="_blank" >RIV/61388998:_____/21:00550094 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s11440-021-01410-7" target="_blank" >https://link.springer.com/article/10.1007/s11440-021-01410-7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11440-021-01410-7" target="_blank" >10.1007/s11440-021-01410-7</a>
Alternative languages
Result language
angličtina
Original language name
Modelling undrained behaviour of sand with fines and fabric anisotropy
Original language description
Fabric anisotropy and fines content (f(c)) in sands modify significantly their mechanical behaviour, particularly as related to static liquefaction under undrained conditions. The fabric anisotropy aspect, expressed by means of an evolving fabric tensor F, has been addressed in the recently developed Anisotropic Critical State Theory (ACST) that enhances the two critical state conditions on stress ratio (eta) and void ratio (e) of the classical Critical State Theory by an additional condition on the critical state value of F in relation to loading direction, based on this concept it introduces the dependence of dilatancy on fabric anisotropy. Various models have been successfully developed within this framework for clean sands. The f(c) aspect has been addressed within the Equivalent Granular State Theory (EGST) that substitutes a properly defined equivalent granular void ratio (e*) for e in any model for clean sand in order to obtain the response of sand with fines without any other change of the model structure and constants. Along these lines, a constitutive model is constructed in this work in order to address the effect of both F and f(c) simultaneously, by a combination of these two powerful propositions. The idea is very simple: one takes a constitutive model developed within ACST for clean sands, hence it accounts for fabric anisotropy, and substitutes the e* for e, as well as the derivative quantities of such substitution, hence it accounts for f(c). The result yields a model that can simulate data on the undrained response for a range of f(c), with emphasis on static liquefaction. It is shown that the inclusion of fabric anisotropy improves previous similar simulations made within the EGST but without the framework of ACST.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/EF15_003%2F0000493" target="_blank" >EF15_003/0000493: Centre of Excellence for Nonlinear Dynamic Behaviour of Advanced Materials in Engineering</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Geotechnica
ISSN
1861-1125
e-ISSN
1861-1133
Volume of the periodical
2021
Issue of the periodical within the volume
December
Country of publishing house
DE - GERMANY
Number of pages
20
Pages from-to
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UT code for WoS article
000729004300001
EID of the result in the Scopus database
2-s2.0-85122140933