Advanced search
1 file | 2.88 MB Add to list

Calibration of DEM material parameters to stimulate stress-strain behaviour of unsaturated soils during uniaxial compression

Author
Organization
Abstract
Discrete element method (DEM) is an appealing technique to simulate soil deformation. However, the calibration of the material parameters in the model remains challenging due to the high computational cost associated with it. In this study, the stress-strain relation of 125 unsaturated soil samples was simulated using DEM and material parameters were calibrated with Kriging. The Young's modulus and friction angle were found to be the most sensitive DEM material parameters, and they had a significant correlation with the bulk density, clay content and water content of the undisturbed soil samples. The DEM simulation showed that the deformation process was a combination of elastic and plastic processes, also at low stresses. Further improvement such as the coupling with (and calibration of) a fluid dynamics model might allow to more accurately simulate the dynamic behaviour of unsaturated soil compression.
Keywords
PRECOMPRESSION STRESS, GRANULAR-MATERIALS, DEFORMATION, COMPACTION, MODELS, ASSEMBLIES, COLLISIONS, FRAMEWORK, STIFFNESS, STRENGTH, Soil compaction, Elastoplastic, Discrete element method

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 2.88 MB

Citation

Please use this url to cite or link to this publication:

MLA
De Pue, Jan, et al. “Calibration of DEM Material Parameters to Stimulate Stress-Strain Behaviour of Unsaturated Soils during Uniaxial Compression.” SOIL & TILLAGE RESEARCH, vol. 194, 2019.
APA
De Pue, J., Di Emidio, G., Verastegui-Flores, R. D., Bezuijen, A., & Cornelis, W. (2019). Calibration of DEM material parameters to stimulate stress-strain behaviour of unsaturated soils during uniaxial compression. SOIL & TILLAGE RESEARCH, 194.
Chicago author-date
De Pue, Jan, Gemmina Di Emidio, R Daniel Verastegui-Flores, Adam Bezuijen, and Wim Cornelis. 2019. “Calibration of DEM Material Parameters to Stimulate Stress-Strain Behaviour of Unsaturated Soils during Uniaxial Compression.” SOIL & TILLAGE RESEARCH 194.
Chicago author-date (all authors)
De Pue, Jan, Gemmina Di Emidio, R Daniel Verastegui-Flores, Adam Bezuijen, and Wim Cornelis. 2019. “Calibration of DEM Material Parameters to Stimulate Stress-Strain Behaviour of Unsaturated Soils during Uniaxial Compression.” SOIL & TILLAGE RESEARCH 194.
Vancouver
1.
De Pue J, Di Emidio G, Verastegui-Flores RD, Bezuijen A, Cornelis W. Calibration of DEM material parameters to stimulate stress-strain behaviour of unsaturated soils during uniaxial compression. SOIL & TILLAGE RESEARCH. 2019;194.
IEEE
[1]
J. De Pue, G. Di Emidio, R. D. Verastegui-Flores, A. Bezuijen, and W. Cornelis, “Calibration of DEM material parameters to stimulate stress-strain behaviour of unsaturated soils during uniaxial compression,” SOIL & TILLAGE RESEARCH, vol. 194, 2019.
@article{8621560,
  abstract     = {Discrete element method (DEM) is an appealing technique to simulate soil deformation. However, the calibration of the material parameters in the model remains challenging due to the high computational cost associated with it. In this study, the stress-strain relation of 125 unsaturated soil samples was simulated using DEM and material parameters were calibrated with Kriging. The Young's modulus and friction angle were found to be the most sensitive DEM material parameters, and they had a significant correlation with the bulk density, clay content and water content of the undisturbed soil samples. The DEM simulation showed that the deformation process was a combination of elastic and plastic processes, also at low stresses. Further improvement such as the coupling with (and calibration of) a fluid dynamics model might allow to more accurately simulate the dynamic behaviour of unsaturated soil compression.},
  articleno    = {104303},
  author       = {De Pue, Jan and Di Emidio, Gemmina and Verastegui-Flores, R Daniel and Bezuijen, Adam and Cornelis, Wim},
  issn         = {0167-1987},
  journal      = {SOIL & TILLAGE RESEARCH},
  keywords     = {PRECOMPRESSION STRESS,GRANULAR-MATERIALS,DEFORMATION,COMPACTION,MODELS,ASSEMBLIES,COLLISIONS,FRAMEWORK,STIFFNESS,STRENGTH,Soil compaction,Elastoplastic,Discrete element method},
  language     = {eng},
  pages        = {9},
  title        = {Calibration of DEM material parameters to stimulate stress-strain behaviour of unsaturated soils during uniaxial compression},
  url          = {http://dx.doi.org/10.1016/j.still.2019.104303},
  volume       = {194},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: