Neohypoplasticity for Sand Coupled With the Generalized Intergranular Strain Concept

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10513587" target="_blank" >RIV/00216208:11310/25:10513587 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wDY7h2rvgW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wDY7h2rvgW</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/nag.70027" target="_blank" >10.1002/nag.70027</a>

Result language
angličtina
Original language name
Neohypoplasticity for Sand Coupled With the Generalized Intergranular Strain Concept
Original language description
This work presents the coupling of the recently revisited advanced hypoplastic constitutive sand model called neohypoplasticity (NHP) with the more recently introduced concept of the generalized intergranular strain (GIS) to account for soil behavior due to small strains. The latter is essential for the simulation of cyclic deformations. In addition to the effective Cauchy-stress "σ" and the void ratio "e", the resulting NHP+GIS formulation includes a fabric tensor "z" (to account for the anisotropic soil structure), the intergranular strain "h", and a cyclic preloading variable "Ω" as state variables. The parameter calibration of the 11 NHP and 10 GIS parameters is discussed in detail and significantly simplified compared to previous NHP versions. Element test simulations of monotonic and cyclic tests and their comparison with experimental data from Karlsruhe fine sand (KFS) and Zbraslav sand (ZS) reveal the satisfying performance of the novel model. The NHP+GIS model captures soil anisotropy effects and static liquefaction in loose sand. Cyclic mobility can be modeled irrespective of soil density. Finally, the NHP+GIS model is applied to a bifurcation problem under plane strain conditions, demonstrating its applicability in initial boundary value problems.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology

Project
<a href="/en/project/LUC24143" target="_blank" >LUC24143: Conceptualisation and modelling of thermal energy storage for hybrid district heating and cooling systems in the Czech Republic</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

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical
International Journal for Numerical and Analytical Methods in Geomechanics
ISSN
0363-9061
e-ISSN
1096-9853
Volume of the periodical
49
Issue of the periodical within the volume
15
Country of publishing house
GB - UNITED KINGDOM
Number of pages
25
Pages from-to
3484-3508
UT code for WoS article
001542946300001
EID of the result in the Scopus database
2-s2.0-105012373384

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