dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/12721 |
|
dc.identifier.uri |
https://doi.org/10.15488/12621 |
|
dc.contributor.author |
Elyashiv, Hadar
|
|
dc.contributor.author |
Bookman, Revital
|
|
dc.contributor.author |
Siemann, Lennart
|
|
dc.contributor.author |
Brink, Uri Ten
|
|
dc.contributor.author |
Huhn, Katrin
|
|
dc.date.accessioned |
2022-08-04T08:31:55Z |
|
dc.date.available |
2022-08-04T08:31:55Z |
|
dc.date.issued |
2020 |
|
dc.identifier.citation |
Elyashiv, H.; Bookman, R.; Siemann, L.; Brink, U.T.; Huhn, K.: Numerical Characterization of Cohesive and Non-Cohesive ‘Sediments’ under Different Consolidation States Using 3D DEM Triaxial Experiments. In: Processes 8 (2020), Nr. 10, 1252. DOI: https://doi.org/10.3390/pr8101252 |
|
dc.description.abstract |
The Discrete Element Method has been widely used to simulate geo-materials due to time and scale limitations met in the field and laboratories. While cohesionless geo-materials were the focus of many previous studies, the deformation of cohesive geo-materials in 3D remained poorly characterized. Here, we aimed to generate a range of numerical ‘sediments’, assess their mechanical response to stress and compare their response with laboratory tests, focusing on differences between the micro- and macro-material properties. We simulated two endmembers—clay (cohesive) and sand (cohesionless). The materials were tested in a 3D triaxial numerical setup, under different simulated burial stresses and consolidation states. Variations in particle contact or individual bond strengths generate first order influence on the stress–strain response, i.e., a different deformation style of the numerical sand or clay. Increased burial depth generates a second order influence, elevating peak shear strength. Loose and dense consolidation states generate a third order influence of the endmember level. The results replicate a range of sediment compositions, empirical behaviors and conditions. We propose a procedure to characterize sediments numerically. The numerical ‘sediments’ can be applied to simulate processes in sediments exhibiting variations in strength due to post-seismic consolidation, bioturbation or variations in sedimentation rates. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Basel : MDPI AG |
|
dc.relation.ispartofseries |
Processes 8 (2020), Nr. 10 |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
Cohesion |
eng |
dc.subject |
Consolidation state |
eng |
dc.subject |
DEM |
eng |
dc.subject |
Peak shear strength |
eng |
dc.subject |
Sediments |
eng |
dc.subject.ddc |
570 | Biowissenschaften, Biologie
|
ger |
dc.title |
Numerical Characterization of Cohesive and Non-Cohesive ‘Sediments’ under Different Consolidation States Using 3D DEM Triaxial Experiments |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2227-9717 |
|
dc.relation.doi |
https://doi.org/10.3390/pr8101252 |
|
dc.bibliographicCitation.issue |
10 |
|
dc.bibliographicCitation.volume |
8 |
|
dc.bibliographicCitation.firstPage |
1252 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|