Sensitivity analysis of fracture energies for the combined finite-discrete element method (FDEM)

P Deng, Q Liu, X Huang, Y Bo, Q Liu, W Li - Engineering Fracture …, 2021 - Elsevier
The combined finite-discrete element method (FDEM) has been widely used in the
numerical study of rock mechanics and geotechnical engineering. Selection of the correct …

[HTML][HTML] Assessing fracturing mechanisms and evolution of excavation damaged zone of tunnels in interlocked rock masses at high stresses using a finite-discrete …

I Vazaios, N Vlachopoulos, MS Diederichs - Journal of Rock Mechanics …, 2019 - Elsevier
Deep underground excavations within hard rocks can result in damage to the surrounding
rock mass mostly due to redistribution of stresses. Especially within rock masses with non …

A numerical investigation of element size and loading/unloading rate for intact rock in laboratory-scale and field-scale based on the combined finite-discrete element …

Q Liu, P Deng - Engineering Fracture Mechanics, 2019 - Elsevier
The combined finite-discrete element method (FDEM) is extensively employed to model
rocks and rock-like materials, in which calibration against the results from uniaxial/triaxial …

A novel joint element parameter calibration procedure for the combined finite-discrete element method

P Deng, Q Liu, H Lu - Engineering Fracture Mechanics, 2022 - Elsevier
The combined finite–discrete element method (FDEM) has been widely used to simulate the
fracture process of rock materials. The FDEM simulation requires many material parameters …

Development of a GPGPU-parallelized FDEM based on extrinsic cohesive zone model with master-slave algorithm

Y Maeda, S Ogata, D Fukuda, H Liu, T Inui - Computers and Geotechnics, 2024 - Elsevier
This paper proposes a novel general-purpose graphic-processing-units (GPGPU) parallel
computing approach to an extrinsic cohesive zone model (ECZM)-based combined finite …

[HTML][HTML] Fracture growth leading to mechanical spalling around deposition boreholes of an underground nuclear waste repository

MC Saceanu, A Paluszny, RW Zimmerman… - International Journal of …, 2022 - Elsevier
This study presents a three-dimensional numerical analysis of multiple fracture growth
leading to spalling around nuclear waste deposition boreholes. Mechanical spalling due to …

Failure mechanism and deformation prediction of soft rock tunnels based on a combined finite–discrete element numerical method

P Deng, Q Liu, B Liu, H Lu - Computers and Geotechnics, 2023 - Elsevier
The large deformation mechanisms and predictions of soft rock tunnels have always been
important but difficult to solve problems in the field of geotechnical engineering. A combined …

A new hysteretic damping model and application for the combined finite-discrete element method (FDEM)

P Deng, Q Liu, X Huang, H Ma - Engineering Analysis with Boundary …, 2021 - Elsevier
In the field of mechanical numerical simulation, damping is always a vital parameter.
However, in the combined finite-discrete element method (FDEM), the current application of …

[HTML][HTML] Numerical simulations for describing generation of excavation damaged zone: Important case study at Horonobe underground research laboratory

S Ogata, H Yasuhara - Rock Mechanics Bulletin, 2023 - Elsevier
The aim of the present research was to establish a case study for the prediction of the
unknown EDZ (Excavation Damaged Zone) distribution using a numerical analysis …

Application of a Finite-Discrete Element Method Code for Modelling Rock Spalling in Tunnels: The Case of the Lyon-Turin Base Tunnel

D Martinelli, A Insana - Applied Sciences, 2024 - mdpi.com
Brittle failure, or spalling, occurs around openings excavated in hard rock masses with high
in situ stresses. It takes place due to the nucleation and growth of cracks around the …