A time-to-facture DEM model for simulating creep in rough crushable sand

Jiangtao Lei; Marcos Arroyo; Matteo Ciantia; Ningning Zhang

doi:10.53243/NUMGE2023-37

A time-to-facture DEM model for simulating creep in rough crushable sand

Jiangtao Lei^*, Marcos Arroyo, Matteo Ciantia, Ningning Zhang

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

Abstract

A contact model able to capture creep of crushable sands within a discrete element method (DEM) framework is presented. Time dependency is established through stress-corrosion induced grain fracture. This is grafted onto a pre-existing particle-splitting model developed to simulate rough-crushable sands. The model is calibrated for Fontainebleau sand and applied to simulate soil creep at high-confining pressures. Creep simulation is advanced using the off-DEM ageing technique. The crackvelocity evolution in particle scale and laboratory oedometer creep curve were successfully captured. Moreover, the onset of creep failure during triaxial creep curve under high deviatoric stress can also be simulated using this model. The results obtained indicate significant potential of this model for micromechanically based investigation of time-dependent soil behaviour.

Original language	English
Title of host publication	Proceedings 10th NUMGE 2023
Subtitle of host publication	10th European Conference on Numerical Methods in Geotechnical Engineering
Editors	L Zdravkovic, S Kontoe, D M G Taborda, A Tsiampousi
Publisher	International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE)
Number of pages	6
DOIs	https://doi.org/10.53243/NUMGE2023-37
Publication status	Published - 2022
Externally published	Yes
Event	NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering - Imperial College London, London, United Kingdom Duration: 26 Jun 2023 → 28 Jun 2023 https://www.imperial.ac.uk/numerical-methods-in-geotechnical-engineering/

Conference

Conference	NUMGE 2023
Country/Territory	United Kingdom
City	London
Period	26/06/23 → 28/06/23
Internet address	https://www.imperial.ac.uk/numerical-methods-in-geotechnical-engineering/

Keywords

DEM simulation
Sand creep
Particle breakage
Crack propagation
Off-DEM ageing

Access to Document

10.53243/NUMGE2023-37

Cite this

Lei, J., Arroyo, M., Ciantia, M., & Zhang, N. (2022). A time-to-facture DEM model for simulating creep in rough crushable sand. In L. Zdravkovic, S. Kontoe, D. M. G. Taborda, & A. Tsiampousi (Eds.), Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE). https://doi.org/10.53243/NUMGE2023-37

Lei, Jiangtao ; Arroyo, Marcos ; Ciantia, Matteo et al. / A time-to-facture DEM model for simulating creep in rough crushable sand. Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering. editor / L Zdravkovic ; S Kontoe ; D M G Taborda ; A Tsiampousi. International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE), 2022.

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title = "A time-to-facture DEM model for simulating creep in rough crushable sand",

abstract = "A contact model able to capture creep of crushable sands within a discrete element method (DEM) framework is presented. Time dependency is established through stress-corrosion induced grain fracture. This is grafted onto a pre-existing particle-splitting model developed to simulate rough-crushable sands. The model is calibrated for Fontainebleau sand and applied to simulate soil creep at high-confining pressures. Creep simulation is advanced using the off-DEM ageing technique. The crackvelocity evolution in particle scale and laboratory oedometer creep curve were successfully captured. Moreover, the onset of creep failure during triaxial creep curve under high deviatoric stress can also be simulated using this model. The results obtained indicate significant potential of this model for micromechanically based investigation of time-dependent soil behaviour.",

keywords = "DEM simulation, Sand creep, Particle breakage, Crack propagation, Off-DEM ageing",

author = "Jiangtao Lei and Marcos Arroyo and Matteo Ciantia and Ningning Zhang",

year = "2022",

doi = "10.53243/NUMGE2023-37",

language = "English",

editor = "L Zdravkovic and S Kontoe and Taborda, {D M G} and A Tsiampousi",

booktitle = "Proceedings 10th NUMGE 2023",

publisher = "International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE)",

note = "NUMGE 2023 : 10th European Conference on Numerical Methods in Geotechnical Engineering ; Conference date: 26-06-2023 Through 28-06-2023",

url = "https://www.imperial.ac.uk/numerical-methods-in-geotechnical-engineering/",

}

Lei, J, Arroyo, M, Ciantia, M & Zhang, N 2022, A time-to-facture DEM model for simulating creep in rough crushable sand. in L Zdravkovic, S Kontoe, DMG Taborda & A Tsiampousi (eds), Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering. International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE), NUMGE 2023, London, United Kingdom, 26/06/23. https://doi.org/10.53243/NUMGE2023-37

A time-to-facture DEM model for simulating creep in rough crushable sand. / Lei, Jiangtao; Arroyo, Marcos; Ciantia, Matteo et al.
Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering. ed. / L Zdravkovic; S Kontoe; D M G Taborda; A Tsiampousi. International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE), 2022.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - A time-to-facture DEM model for simulating creep in rough crushable sand

AU - Lei, Jiangtao

AU - Arroyo, Marcos

AU - Ciantia, Matteo

AU - Zhang, Ningning

PY - 2022

Y1 - 2022

N2 - A contact model able to capture creep of crushable sands within a discrete element method (DEM) framework is presented. Time dependency is established through stress-corrosion induced grain fracture. This is grafted onto a pre-existing particle-splitting model developed to simulate rough-crushable sands. The model is calibrated for Fontainebleau sand and applied to simulate soil creep at high-confining pressures. Creep simulation is advanced using the off-DEM ageing technique. The crackvelocity evolution in particle scale and laboratory oedometer creep curve were successfully captured. Moreover, the onset of creep failure during triaxial creep curve under high deviatoric stress can also be simulated using this model. The results obtained indicate significant potential of this model for micromechanically based investigation of time-dependent soil behaviour.

AB - A contact model able to capture creep of crushable sands within a discrete element method (DEM) framework is presented. Time dependency is established through stress-corrosion induced grain fracture. This is grafted onto a pre-existing particle-splitting model developed to simulate rough-crushable sands. The model is calibrated for Fontainebleau sand and applied to simulate soil creep at high-confining pressures. Creep simulation is advanced using the off-DEM ageing technique. The crackvelocity evolution in particle scale and laboratory oedometer creep curve were successfully captured. Moreover, the onset of creep failure during triaxial creep curve under high deviatoric stress can also be simulated using this model. The results obtained indicate significant potential of this model for micromechanically based investigation of time-dependent soil behaviour.

KW - DEM simulation

KW - Sand creep

KW - Particle breakage

KW - Crack propagation

KW - Off-DEM ageing

U2 - 10.53243/NUMGE2023-37

DO - 10.53243/NUMGE2023-37

M3 - Conference contribution

BT - Proceedings 10th NUMGE 2023

A2 - Zdravkovic, L

A2 - Kontoe, S

A2 - Taborda, D M G

A2 - Tsiampousi, A

PB - International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE)

T2 - NUMGE 2023

Y2 - 26 June 2023 through 28 June 2023

ER -

Lei J, Arroyo M, Ciantia M, Zhang N. A time-to-facture DEM model for simulating creep in rough crushable sand. In Zdravkovic L, Kontoe S, Taborda DMG, Tsiampousi A, editors, Proceedings 10th NUMGE 2023: 10th European Conference on Numerical Methods in Geotechnical Engineering. International Society for Soil Mechanics and Geotechnical Engineering (SIMSG) (ISSMGE). 2022 doi: 10.53243/NUMGE2023-37

A time-to-facture DEM model for simulating creep in rough crushable sand

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Conference

Keywords

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