Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test
This paper deals with the micro and macro behaviors of coarse sand inside a direct shear box during a geotechnical test. A 3D discrete element method (DEM) model of the direct shear of sand was performed using sphere particles to explore the ability of the rolling resistance linear contact model to...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-03-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/5/2077 |
| _version_ | 1797614861199343616 |
|---|---|
| author | Mohamed Amine Benmebarek Majid Movahedi Rad |
| author_facet | Mohamed Amine Benmebarek Majid Movahedi Rad |
| author_sort | Mohamed Amine Benmebarek |
| collection | DOAJ |
| description | This paper deals with the micro and macro behaviors of coarse sand inside a direct shear box during a geotechnical test. A 3D discrete element method (DEM) model of the direct shear of sand was performed using sphere particles to explore the ability of the rolling resistance linear contact model to reproduce this commonly used test considering real-size particles. The focus was on the effect of the interaction of the main contact model parameters and particle size on maximum shear stress, residual shear stress, and sand volume change. The performed model was calibrated and validated with experimental data and followed by sensitive analyses. It is shown that the stress path can be reproduced appropriately. For a high coefficient of friction, the peak shear stress and volume change during the shearing process were mainly affected by increasing the rolling resistance coefficient. However, for a low coefficient of friction, shear stress and volume change were marginally affected by the rolling resistance coefficient. As expected, varying the friction and rolling resistance coefficients was found to have less influence on the residual shear stress. |
| first_indexed | 2024-03-11T07:18:15Z |
| format | Article |
| id | doaj.art-1a910d0c5b174572bf1a5c03a46d614b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T07:18:15Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-1a910d0c5b174572bf1a5c03a46d614b2023-11-17T08:06:58ZengMDPI AGMaterials1996-19442023-03-01165207710.3390/ma16052077Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear TestMohamed Amine Benmebarek0Majid Movahedi Rad1Department of Structural and Geotechnical Engineering, Faculty of Architecture, Civil Engineering and Transport Sciences, Széchenyi István University, Egyetem tér 1, 9026 Gyor, HungaryDepartment of Structural and Geotechnical Engineering, Faculty of Architecture, Civil Engineering and Transport Sciences, Széchenyi István University, Egyetem tér 1, 9026 Gyor, HungaryThis paper deals with the micro and macro behaviors of coarse sand inside a direct shear box during a geotechnical test. A 3D discrete element method (DEM) model of the direct shear of sand was performed using sphere particles to explore the ability of the rolling resistance linear contact model to reproduce this commonly used test considering real-size particles. The focus was on the effect of the interaction of the main contact model parameters and particle size on maximum shear stress, residual shear stress, and sand volume change. The performed model was calibrated and validated with experimental data and followed by sensitive analyses. It is shown that the stress path can be reproduced appropriately. For a high coefficient of friction, the peak shear stress and volume change during the shearing process were mainly affected by increasing the rolling resistance coefficient. However, for a low coefficient of friction, shear stress and volume change were marginally affected by the rolling resistance coefficient. As expected, varying the friction and rolling resistance coefficients was found to have less influence on the residual shear stress.https://www.mdpi.com/1996-1944/16/5/2077DEMdirect shear boxcontact modelsensitive analysespeak shear stressresidual shear stress |
| spellingShingle | Mohamed Amine Benmebarek Majid Movahedi Rad Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test Materials DEM direct shear box contact model sensitive analyses peak shear stress residual shear stress |
| title | Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test |
| title_full | Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test |
| title_fullStr | Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test |
| title_full_unstemmed | Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test |
| title_short | Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test |
| title_sort | effect of rolling resistance model parameters on 3d dem modeling of coarse sand direct shear test |
| topic | DEM direct shear box contact model sensitive analyses peak shear stress residual shear stress |
| url | https://www.mdpi.com/1996-1944/16/5/2077 |
| work_keys_str_mv | AT mohamedaminebenmebarek effectofrollingresistancemodelparameterson3ddemmodelingofcoarsesanddirectsheartest AT majidmovahedirad effectofrollingresistancemodelparameterson3ddemmodelingofcoarsesanddirectsheartest |