Neohypoplasticity for Sand Coupled With the Generalized Intergranular Strain Concept
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Neohypoplasticity for Sand Coupled With the Generalized Intergranular Strain Concept
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Neohypoplasticity for Sand Coupled With the Generalized Intergranular Strain Concept
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/LUC24143" target="_blank" >LUC24143: Konceptualizace a modelování akumulace tepelné energie pro hybridní systémy dálkového vytápění a chlazení v České republice</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
International Journal for Numerical and Analytical Methods in Geomechanics
ISSN
0363-9061
e-ISSN
1096-9853
Svazek periodika
49
Číslo periodika v rámci svazku
15
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
25
Strana od-do
3484-3508
Kód UT WoS článku
001542946300001
EID výsledku v databázi Scopus
2-s2.0-105012373384