Generalized intergranular strain concept and its application to hypoplastic models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10490417" target="_blank" >RIV/00216208:11310/24:10490417 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=J27VrGZwcJ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=J27VrGZwcJ</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compgeo.2024.106480" target="_blank" >10.1016/j.compgeo.2024.106480</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Generalized intergranular strain concept and its application to hypoplastic models

Popis výsledku v původním jazyce

This work presents a generalized approach for the consideration of small -strain effects in constitutive models for soils. These are thereby particularly important for the simulation of cyclic deformations of soil subjected to small strain amplitudes. The novel generalized intergranular strain (GIS) approach represents an overlay concept for constitutive models and is based on the well-known intergranular strain (IS) concept after Niemunis and Herle (1997), resp. its improvement (ISI) after Duque et al. (2020). However, the novel GIS concept can easily be transferred to different constitutive models (e.g. hypoplastic or elasto-plastic formulations). Based on an extended generalized hypoplastic formulation, the GIS concept is combined with the base hypoplastic constitutive model for sand after von Wolffersdorff (1996) (HP) incorporating the extracted asymptotic state boundary surface (ASBS). The latter is derived and visualized. Different element test simulations with the coupled HP+GIS model and the well-known HP+IS formulation are presented and compared using a parameter set of Zbraslav sand. Thereby, the intrinsic feature of the GIS concept, which prevents overshooting of the ASBS, becomes apparent. Based on the ISI formulation, nonlinear accumulation effects can be reproduced in the GIS concept using a further scalar historiotropic state variable.

Název v anglickém jazyce

Generalized intergranular strain concept and its application to hypoplastic models

Popis výsledku anglicky

This work presents a generalized approach for the consideration of small -strain effects in constitutive models for soils. These are thereby particularly important for the simulation of cyclic deformations of soil subjected to small strain amplitudes. The novel generalized intergranular strain (GIS) approach represents an overlay concept for constitutive models and is based on the well-known intergranular strain (IS) concept after Niemunis and Herle (1997), resp. its improvement (ISI) after Duque et al. (2020). However, the novel GIS concept can easily be transferred to different constitutive models (e.g. hypoplastic or elasto-plastic formulations). Based on an extended generalized hypoplastic formulation, the GIS concept is combined with the base hypoplastic constitutive model for sand after von Wolffersdorff (1996) (HP) incorporating the extracted asymptotic state boundary surface (ASBS). The latter is derived and visualized. Different element test simulations with the coupled HP+GIS model and the well-known HP+IS formulation are presented and compared using a parameter set of Zbraslav sand. Thereby, the intrinsic feature of the GIS concept, which prevents overshooting of the ASBS, becomes apparent. Based on the ISI formulation, nonlinear accumulation effects can be reproduced in the GIS concept using a further scalar historiotropic state variable.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/GC21-35764J" target="_blank" >GC21-35764J: Experimentální a numerické studium sdruženého termo-hydro-mechanického chování jílu s důrazem na cyklické zatěžování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Computers and Geotechnics

ISSN

0266-352X

e-ISSN

1873-7633

Svazek periodika

173

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

106480

Kód UT WoS článku

001256623500001

EID výsledku v databázi Scopus

2-s2.0-85195079041