Generalized intergranular strain concept and its application to hypoplastic models

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Generalized intergranular strain concept and its application to hypoplastic models

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - 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/GC21-35764J" target="_blank" >GC21-35764J: Experimental and numerical investigation of coupled thermo-hydro-mechanical behaviour of clay with focus to cyclic processes</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Computers and Geotechnics

ISSN

0266-352X

e-ISSN

1873-7633

Volume of the periodical

173

Issue of the periodical within the volume

September

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

106480

UT code for WoS article

001256623500001

EID of the result in the Scopus database

2-s2.0-85195079041