Simulation of shear band development in a sand-gravel system
(2003) International Workshop on Prediction and Simulation Methods in Geomechanics- Abstract
- A Geomaterial structures always involves local inhomogeneities in the material, which give rise to shear bands in the soil structures. This phenomenon decreases the strength of the material considerable and it is the objective of this paper to study the material behaviour micromechanically or locally and then investigate global responses. The imperfections are introduced in form of stiff gravel particles embedded in the sand. The material model utilized is based on the non-associated elasto-plasticity concept with isotropic hardening law, able to represent dilation. The coupling between the local and global scales is achieved by use of a homogenization technique, in which a Representative Volume Element (RVE) is utilized. Characteristics... (More)
- A Geomaterial structures always involves local inhomogeneities in the material, which give rise to shear bands in the soil structures. This phenomenon decreases the strength of the material considerable and it is the objective of this paper to study the material behaviour micromechanically or locally and then investigate global responses. The imperfections are introduced in form of stiff gravel particles embedded in the sand. The material model utilized is based on the non-associated elasto-plasticity concept with isotropic hardening law, able to represent dilation. The coupling between the local and global scales is achieved by use of a homogenization technique, in which a Representative Volume Element (RVE) is utilized. Characteristics such as bearing capacity, development of shear bands, their dependency on the material parameters, initial test conditions and mesh size are studied (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/635545
- author
- Ahadi, Aylin LU and Kristensson, Ola LU
- organization
- publishing date
- 2003
- type
- Contribution to conference
- publication status
- published
- subject
- keywords
- finite element analysis., elasto-plasticity, localization, RVE, soil
- pages
- 4 pages
- conference name
- International Workshop on Prediction and Simulation Methods in Geomechanics
- conference location
- Athens, Greece
- conference dates
- 2003-10-14
- language
- English
- LU publication?
- yes
- id
- 9419ed24-a5cc-48fa-8ff3-636b4d85bd49 (old id 635545)
- date added to LUP
- 2016-04-04 13:02:23
- date last changed
- 2018-11-21 21:11:54
@misc{9419ed24-a5cc-48fa-8ff3-636b4d85bd49,
abstract = {{A Geomaterial structures always involves local inhomogeneities in the material, which give rise to shear bands in the soil structures. This phenomenon decreases the strength of the material considerable and it is the objective of this paper to study the material behaviour micromechanically or locally and then investigate global responses. The imperfections are introduced in form of stiff gravel particles embedded in the sand. The material model utilized is based on the non-associated elasto-plasticity concept with isotropic hardening law, able to represent dilation. The coupling between the local and global scales is achieved by use of a homogenization technique, in which a Representative Volume Element (RVE) is utilized. Characteristics such as bearing capacity, development of shear bands, their dependency on the material parameters, initial test conditions and mesh size are studied}},
author = {{Ahadi, Aylin and Kristensson, Ola}},
keywords = {{finite element analysis.; elasto-plasticity; localization; RVE; soil}},
language = {{eng}},
title = {{Simulation of shear band development in a sand-gravel system}},
year = {{2003}},
}