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Journal articles on the topic 'Combined finite-discrete element method (FDEM)'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Zhou, Wei, Wei Yuan, Gang Ma, and Xiao-Lin Chang. "Combined finite-discrete element method modeling of rockslides." Engineering Computations 33, no. 5 (2016): 1530–59. http://dx.doi.org/10.1108/ec-04-2015-0082.

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Purpose – The purpose of this paper is to propose a novel combined finite-discrete element method (FDEM), based on the cohesive zone model, for simulating rockslide problems at the laboratory scale. Design/methodology/approach – The combined FDEM is realized using ABAQUS/Explicit. The rock mass is represented as a collection of elastic bulk elements glued by cohesive elements with zero thickness. To reproduce the tensile and shear micro-fractures in rock material, the Mohr-Coulomb model with tension cut-off is employed as the damage initiation criterion of cohesive elements. Three simulated la

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2

Chen, Xudong, and Hongfan Wang. "Slope Failure of Noncohesive Media Modelled with the Combined Finite–Discrete Element Method." Applied Sciences 9, no. 3 (2019): 579. http://dx.doi.org/10.3390/app9030579.

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Slope failure behaviour of noncohesive media with the consideration of gravity and ground excitations is examined using the two-dimensional combined finite–discrete element method (FDEM). The FDEM aims at solving large-scale transient dynamics and is particularly suitable for this problem. The method discretises an entity into a couple of individual discrete elements. Within each discrete element, the finite element method (FEM) formulation is embedded so that contact forces and deformation between and of these discrete elements can be predicted more accurately. Noncohesive media is simply mod

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3

Liu, Quansheng, Lei Sun, Pingli Liu, and Lei Chen. "Modeling Simultaneous Multiple Fracturing Using the Combined Finite-Discrete Element Method." Geofluids 2018 (2018): 1–20. http://dx.doi.org/10.1155/2018/4252904.

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Simultaneous multiple fracturing is a key technology to facilitate the production of shale oil/gas. When multiple hydraulic fractures propagate simultaneously, there is an interaction effect among these propagating hydraulic fractures, known as the stress-shadow effect, which has a significant impact on the fracture geometry. Understanding and controlling the propagation of simultaneous multiple hydraulic fractures and the interaction effects between multiple fractures are critical to optimizing oil/gas production. In this paper, the FDEM simulator and a fluid simulator are linked, named FDEM-

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Knight, Earl E., Esteban Rougier, Zhou Lei, et al. "HOSS: an implementation of the combined finite-discrete element method." Computational Particle Mechanics 7, no. 5 (2020): 765–87. http://dx.doi.org/10.1007/s40571-020-00349-y.

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Abstract Nearly thirty years since its inception, the combined finite-discrete element method (FDEM) has made remarkable strides in becoming a mainstream analysis tool within the field of Computational Mechanics. FDEM was developed to effectively “bridge the gap” between two disparate Computational Mechanics approaches known as the finite and discrete element methods. At Los Alamos National Laboratory (LANL) researchers developed the Hybrid Optimization Software Suite (HOSS) as a hybrid multi-physics platform, based on FDEM, for the simulation of solid material behavior complemented with the l

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Li, Wangpeng, Xudong Chen, Hongfan Wang, Andrew H. C. Chan, and Yingyao Cheng. "Evaluating the Seismic Capacity of Dry-Joint Masonry Arch Structures via the Combined Finite-Discrete Element Method." Applied Sciences 11, no. 18 (2021): 8725. http://dx.doi.org/10.3390/app11188725.

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The behaviour of dry-joint masonry arch structures is highly nonlinear and discontinuous since they are composed of individual discrete blocks. These structures are vulnerable to seismic excitations. It is difficult for traditional methods like the standard finite element method (FEM) to simulate masonry failure due to their intrinsic limitations. An advanced computational approach, i.e., the combined finite-discrete element method (FDEM), was employed in this study to examine the first-order seismic capacity of masonry arches and buttressed arches with different shapes subjected to gravity an

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Uzelac, Ivana, Hrvoje Smoljanovic, Milko Batinic, Bernardin Peroš, and Ante Munjiza. "A model for thin shells in the combined finite-discrete element method." Engineering Computations 35, no. 1 (2018): 377–94. http://dx.doi.org/10.1108/ec-09-2016-0338.

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Purpose This paper aims to present a new numerical model for geometric nonlinear analysis of thin-shell structures based on a combined finite-discrete element method (FDEM). Design/methodology/approach The model uses rotation-free, three-node triangular finite elements with exact formulation for large rotations, large displacements in conjunction with small strains. Findings The presented numerical results related to behaviour of arbitrary shaped thin shell structures under large rotations and large displacement are in a good agreement with reference solutions. Originality/value This paper pre

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7

An, Huaming, Yushan Song, Hongyuan Liu, and Haoyu Han. "Combined Finite-Discrete Element Modelling of Dynamic Rock Fracture and Fragmentation during Mining Production Process by Blast." Shock and Vibration 2021 (January 29, 2021): 1–18. http://dx.doi.org/10.1155/2021/6622926.

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A combined finite-discrete element method (FDEM) is proposed to model the dynamic fracture, fragmentation, and resultant muck-piling process during mining production by blast in underground mine. The key component of the proposed method, that is, transition from continuum to discontinuum through fracture and fragmentation, is introduced in detail, which makes the proposed method superior to the continuum-based finite element method and discontinuum-based discrete element method. The FDEM is calibrated by modelling the crater formation process by blast. The FDEM has well modelled the stress and

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8

Liu, Xunnan, Lanhao Zhao, Jia Mao, and Tongchun Li. "Tangential Force Model for the Combined Finite-Discrete Element Method." International Journal of Computational Methods 17, no. 09 (2019): 1950068. http://dx.doi.org/10.1142/s0219876219500683.

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In the past, contact model in the combined finite-discrete element method (FDEM) does not include the influence of the tangential contact interaction, and the deficient model associated with the contact force can seriously degrade the computing accuracy. In order to overcome this defect, an improved FDEM is developed in this work. The potential contact mechanism is implemented to calculate the normal contact force; meanwhile, the force-displacement law by coupling the classical Mohr–Coulomb type frictional algorithm and the rotation transformation algorithm is applied for the accurate computat

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9

Lei, Zhou, Esteban Rougier, Earl E. Knight, Luke Frash, James William Carey, and Hari Viswanathan. "A non-locking composite tetrahedron element for the combined finite discrete element method." Engineering Computations 33, no. 7 (2016): 1929–56. http://dx.doi.org/10.1108/ec-09-2015-0268.

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Purpose In order to avoid the problem of volumetric locking often encountered when using constant strain tetrahedral finite elements, the purpose of this paper is to present a new composite tetrahedron element which is especially designed for the combined finite-discrete element method (FDEM). Design/methodology/approach A ten-noded composite tetrahedral (COMPTet) finite element, composed of eight four-noded low order tetrahedrons, has been implemented based on Munjiza’s multiplicative decomposition approach. This approach naturally decomposes deformation into translation, rotation, plastic st

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Lei, Zhou, Esteban Rougier, Earl E. Knight, Mengyan Zang, and Antonio Munjiza. "Impact Fracture and Fragmentation of Glass via the 3D Combined Finite-Discrete Element Method." Applied Sciences 11, no. 6 (2021): 2484. http://dx.doi.org/10.3390/app11062484.

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A driving technical concern for the automobile industry is their assurance that developed windshield products meet Federal safety standards. Besides conducting innumerable glass breakage experiments, product developers also have the option of utilizing numerical approaches that can provide further insight into glass impact breakage, fracture, and fragmentation. The combined finite-discrete element method (FDEM) is one such tool and was used in this study to investigate 3D impact glass fracture processes. To enable this analysis, a generalized traction-separation model, which defines the consti

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Godinez, Humberto C., and Esteban Rougier. "Assimilation of Dynamic Combined Finite Discrete Element Methods Using the Ensemble Kalman Filter." Applied Sciences 11, no. 7 (2021): 2898. http://dx.doi.org/10.3390/app11072898.

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Simulation of fracture initiation, propagation, and arrest is a problem of interest for many applications in the scientific community. There are a number of numerical methods used for this purpose, and among the most widely accepted is the combined finite-discrete element method (FDEM). To model fracture with FDEM, material behavior is described by specifying a combination of elastic properties, strengths (in the normal and tangential directions), and energy dissipated in failure modes I and II, which are modeled by incorporating a parameterized softening curve defining a post-peak stress-disp

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Chen, Xiangxiang, Xudong Chen, Andrew Chan, Yingyao Cheng, and Hongfan Wang. "A FDEM Parametric Investigation on the Impact Fracture of Monolithic Glass." Buildings 12, no. 3 (2022): 271. http://dx.doi.org/10.3390/buildings12030271.

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Due to the brittleness, monolithic glass may fracture under impact, resulting in catastrophic sequences. The combined finite-discrete element method, i.e., FDEM, is employed to investigate both the oblique and the perpendicular impact failures of monolithic glass parametrically, particularly the soda-lime glass. Using FDEM, glass is discretised into discrete elements where a finite element formulation is incorporated, leading to accurate evaluation of the contact forces and structural deformation. Following the basic theories of the FDEM, a cohesive Mode I fracture model of glass is briefly in

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13

Joulin, Clément, Jiansheng Xiang, John-Paul Latham, Christopher Pain, and Pablo Salinas. "Capturing heat transfer for complex-shaped multibody contact problems, a new FDEM approach." Computational Particle Mechanics 7, no. 5 (2020): 919–34. http://dx.doi.org/10.1007/s40571-020-00321-w.

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Abstract This paper presents a new approach for the modelling of heat transfer in 3D discrete particle systems. Using a combined finite–discrete element (FDEM) method, the surface of contact is numerically computed when two discrete meshes of two solids experience a small overlap. Incoming heat flux and heat conduction inside and between solid bodies are linked. In traditional FEM (finite element method) or DEM (discrete element method) approaches, to model heat transfer across contacting bodies, the surface of contact is not directly reconstructed. The approach adopted here uses the number of

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14

An, Huaming, Yuqing Fan, Hongyuan Liu, Yinyao Cheng, and Yushan Song. "The State of the Art and New Insight into Combined Finite–Discrete Element Modelling of the Entire Rock Slope Failure Process." Sustainability 14, no. 9 (2022): 4896. http://dx.doi.org/10.3390/su14094896.

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The stability of rock slopes is of significance, as even the slightest slope failure can result in damage to infrastructure and catastrophes for human beings. Thus, this article focuses on the review of the current techniques available for rock slope stability analysis. The rock slope stability techniques can be classified as conventional methods and numerical methods. The advantages and limitations of the conventional method are briefly reviewed. The numerical methods mainly included three types, i.e., continuum methods, discontinuum methods, and the combined/hybrid continuum–discontinuum met

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15

Farsi, A., A. Bedi, J. P. Latham, and K. Bowers. "Simulation of fracture propagation in fibre-reinforced concrete using FDEM: an application to tunnel linings." Computational Particle Mechanics 7, no. 5 (2019): 961–74. http://dx.doi.org/10.1007/s40571-019-00305-5.

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AbstractThe application of the combined finite-discrete element method (FDEM) to simulate fracture propagation in fibre-reinforced-concrete (FRC)-lined tunnels has been investigated. This constitutes the first attempt of using FDEM for the simulation of fracture in FRC structures. The mathematical implementations of the new FDEM joint-element constitutive model are first introduced, and the numerical model is then validated comparing the results for plain and FRC beams with three-point bending experimental data. The code has also been applied to two practical tunnel design case studies, showin

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16

He, Fan, Quansheng Liu, and Penghai Deng. "Investigation of the Anisotropic Characteristics of Layered Rocks under Uniaxial Compression Based on the 3D Printing Technology and the Combined Finite-Discrete Element Method." Advances in Materials Science and Engineering 2020 (July 15, 2020): 1–10. http://dx.doi.org/10.1155/2020/8793214.

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The excavation in layered rocks is an issue for a number of geoengineering applications; these kinds of rocks all exhibit transverse isotropic features due to the process of metamorphic differentiation. This paper focuses on providing two methods, i.e., the 3D printing technology and the combined finite-discrete element method, to simulate the anisotropic characteristics of layered rocks. The results showed that both the 3D-printed samples and the FDEM numerical models are considered as a good match, and both revealed that as the inclined angle increased, the UCS of the sample first decreased

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17

Schiava D'Albano, Guillermo Gonzalo, Tomas Lukas, Fang Su, Theodosios Korakianitis, and Ante Munjiza. "Numerical comparison of some contact detection algorithms." Engineering Computations 34, no. 3 (2017): 832–51. http://dx.doi.org/10.1108/ec-01-2016-0047.

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Purpose Contact interaction and contact detection (CD) remain key components of any discontinua simulations. The methods of discontinua include combined finite-discrete element method (FDEM), discrete element method, molecular dynamics, etc. In recent years, a number of CD algorithms have been developed, such as Munjiza–Rougier (MR), Munjiza–Rougier–Schiava (MR-S), Munjiza-No Binary Search (NBS), Balanced Binary Tree Schiava (BBTS), 3D Discontinuous Deformation Analysis and many others. This work aims to conduct a numerical comparison of certain algorithms often used in FDEM for bodies of the

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18

Deng, Penghai, Quansheng Liu, Xing Huang, Yin Bo, Qi Liu, and Weiwei Li. "Sensitivity analysis of fracture energies for the combined finite-discrete element method (FDEM)." Engineering Fracture Mechanics 251 (June 2021): 107793. http://dx.doi.org/10.1016/j.engfracmech.2021.107793.

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Xu, Chenyu, Quansheng Liu, Weiqiang Xie, et al. "Investigation on artificial boundary problem in the combined finite-discrete element method (FDEM)." Computers and Geotechnics 151 (November 2022): 104969. http://dx.doi.org/10.1016/j.compgeo.2022.104969.

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20

Liu, He, Zuliang Shao, Qibin Lin, Yiming Lei, Chenglei Du, and Yucong Pan. "Resultant Normal Contact Force-Based Contact Friction Model for the Combined Finite-Discrete Element Method and Its Validation." Mathematics 11, no. 19 (2023): 4197. http://dx.doi.org/10.3390/math11194197.

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In the conventional FDEM (Combined Finite and Discrete Element Method), each contact pair might have multiple contact points where friction forces are applied, leading to non-unique friction force assignments and potentially introducing computational errors. This study introduces a new contact friction algorithm for FDEM based on the resultant normal contact force. This method necessitates determining the friction force at a unique equivalent contact point, thereby significantly simplifying the computational flow and reducing memory usage. A series of numerical tests are performed to validate

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21

Cai, Weibing, Ke Gao, Shugang Ai, and Sheng Zhi. "A 2D energy-conserving contact model for the combined finite-discrete element method (FDEM)." Computers and Geotechnics 166 (February 2024): 105972. http://dx.doi.org/10.1016/j.compgeo.2023.105972.

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22

Ou, Weibing, Xudong Chen, Andrew Chan, Yingyao Cheng, and Hongfan Wang. "FDEM Simulation on the Failure Behavior of Historic Masonry Heritages Subjected to Differential Settlement." Buildings 12, no. 10 (2022): 1592. http://dx.doi.org/10.3390/buildings12101592.

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Historic masonry heritages, such as cathedrals, colonnades, and arch bridges, were constructed with individual components (e.g., stones, bricks, other materials) bound together with, e.g., mortar, and they are very vulnerable to foundation settlement, especially differential settlement which occurs frequently in engineering practice. These masonry structures are discontinuous, and therefore, their behavior under differential settlement is highly nonlinear and complex. In this study, the combined finite-discrete element method (FDEM) is employed to simulate the failure behavior of historic maso

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23

Wu, Yamin, Tuanjie Wang, Junfeng Duan, and Lei Song. "Mesoscale numerical study of size effect on concrete fracture characteristics based on FDEM." Electronic Journal of Structural Engineering 25, no. 1 (2025): 46–51. https://doi.org/10.56748/ejse.24667.

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Fracture characteristics of concrete remains a focal point of current research. Traditional experimental approaches and finite element simulations face limitations in the study of concrete's fracture behavior. The novel combined finite-discrete element method (FDEM) offers pronounced advantages for investigating concrete fracture at the mesoscopic scale. In this paper, utilizing the FDEM approach, a mesoscale concrete model encompassing aggregates, mortar, and the interfacial transition zone was constructed. Three-point bending simulations on concrete beams with precast cracks revealed the mes

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Deng, Penghai, Quansheng Liu, Xing Huang, and Hao Ma. "A new hysteretic damping model and application for the combined finite-discrete element method (FDEM)." Engineering Analysis with Boundary Elements 132 (November 2021): 370–82. http://dx.doi.org/10.1016/j.enganabound.2021.08.021.

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Xu, Chenyu, Quansheng Liu, Xuhai Tang, Lei Sun, Penghai Deng, and He Liu. "Dynamic stability analysis of jointed rock slopes using the combined finite-discrete element method (FDEM)." Computers and Geotechnics 160 (August 2023): 105556. http://dx.doi.org/10.1016/j.compgeo.2023.105556.

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Min, Gyeongjo, Daisuke Fukuda, and Sangho Cho. "3D Numerical Analysis Method for Simulating Collapse Behavior of RC Structures by Hybrid FEM/DEM." Applied Sciences 12, no. 6 (2022): 3073. http://dx.doi.org/10.3390/app12063073.

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Recent years have seen an increase in demand for the demolition of obsolete and potentially hazardous structures, including reinforced concrete (RC) structures, using blasting techniques. However, because the risk of failure is significantly higher when applying blasting to demolish RC structures than mechanical dismantling, it is critical to achieve the optimal demolition design and conditions using blasting by taking into account the major factors affecting a structure’s demolition. To this end, numerical analysis techniques have frequently been used to simulate the progressive failure resul

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Xu, Chenyu, Yingguo Hu, Genquan Li, Chenyang Ma, and Meishan Liu. "Study on Dynamic Evolution of the Landslide–Anchorage Structure System Under Earthquake with the Combined Finite–Discrete Element Method." Applied Sciences 15, no. 11 (2025): 6248. https://doi.org/10.3390/app15116248.

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The landslides caused by slope instability are very harmful and have a destructive effect on existing engineering structures such as tunnels, bridges, and houses. At present, the dynamic design of the anchorage structure is mainly based on traditional statics, which fails to fully consider the dynamic evolution process of landslide and its synergistic mechanism with anchorage structure. It is urgent to study the landslide–anchorage structure system considering both the catastrophic process and the evolution process. Based on the advanced combined finite–discrete element method (FDEM), the pres

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Balić, Ivan, Hrvoje Smoljanović, Boris Trogrlić, and Ante Munjiza. "Seismic Analysis of the Bell Tower of the Church of St. Francis of Assisi on Kaptol in Zagreb by Combined Finite-Discrete Element Method." Buildings 11, no. 8 (2021): 373. http://dx.doi.org/10.3390/buildings11080373.

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The paper presents a failure analysis of the bell tower of the church of St. Francis of Assisi on Kaptol in Zagreb subjected to seismic activity using the finite-discrete element method—FDEM. The bell tower is a masonry building, and throughout history it has undergone multiple damages and reconstructions. It was significantly damaged during the earthquake in Zagreb which occurred on 22 March 2020 with a magnitude of 5.5. The analysis was performed on a simplified FDEM 2D numerical model which corresponds to the structure in its current pre-disaster state and the structure after the proposed p

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Min, Gyeongjo, Daisuke Fukuda, Sewook Oh, et al. "Three-Dimensional Combined Finite-Discrete Element Modeling of Shear Fracture Process in Direct Shearing of Rough Concrete–Rock Joints." Applied Sciences 10, no. 22 (2020): 8033. http://dx.doi.org/10.3390/app10228033.

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A three-dimensional combined finite-discrete element element method (FDEM), parallelized by a general-purpose graphic-processing-unit (GPGPU), was applied to identify the fracture process of rough concrete–rock joints under direct shearing. The development process of shear resistance under the complex interaction between the rough concrete–rock joint surfaces, i.e., asperity dilatation, sliding, and degradation, was numerically simulated in terms of various asperity roughness under constant normal confinement. It was found that joint roughness significantly affects the development of overall j

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Wang, Yongtao, Baicong Ma, Weihang Hua, et al. "Application of the FDEM Based on the CZM in Simulating Three-Point Bending Test of Frozen Soil." Atmosphere 13, no. 12 (2022): 2083. http://dx.doi.org/10.3390/atmos13122083.

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The combined finite–discrete element method (FDEM) based on the cohesive zone model (the CZM) achieves cracking simulation by inserting cohesive elements between solid elements. In this study, three-point bending fracture tests of frozen soil were simulated by using the FDEM based on the CZM. Firstly, the sensitivity of the cohesive model parameters was analyzed. Secondly, through a series of simulations of the three-point bending test of frozen soil, it was found that the model with reasonable values of the CZM parameters had a good adaptability to the three-point bending cracking test of fro

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Liu, Qi, and Penghai Deng. "Numerical Study of Rock Fragmentation Process and Acoustic Emission by FDEM Based on Heterogeneous Model." Mathematical Problems in Engineering 2020 (July 23, 2020): 1–13. http://dx.doi.org/10.1155/2020/2109584.

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Rock has the characteristics of natural heterogeneity and discontinuity. Its failure phenomenon induced by external force involves complex processes, including the microcrack initiation, propagation, coalescence, and the macrocrack formation. In this study, the Weibull random distribution based on the rock microstructure characteristics is introduced into the combined finite-discrete element method (FDEM) to establish the heterogeneous rock model, and the mechanical response and damage evolution of rock samples in uniaxial compression test are simulated. The results show that FDEM simulation w

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Cai, Weibing, Wei Wang, Shuai Zhang, and Yong Li. "A 3D contact interaction algorithm using unified distance potential field for the combined finite-discrete element method (FDEM)." Engineering Analysis with Boundary Elements 179 (October 2025): 106336. https://doi.org/10.1016/j.enganabound.2025.106336.

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Scaravaglione, Giulio, John-Paul Latham, and Jiansheng Xiang. "Numerical Model Study of Prototype Drop Tests on Cube and Cubipod® Concrete Armor Units Using the Combined Finite–Discrete Element Method." Journal of Marine Science and Engineering 9, no. 5 (2021): 460. http://dx.doi.org/10.3390/jmse9050460.

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This paper aims to evaluate the structural strength of unreinforced concrete armor units (CAU), named Cubipod®, used on rubble-mound breakwaters and coastal structures, through a numerical methodology using the combined finite–discrete element method (FDEM). A numerical modeling methodology is developed to reproduce the results of an experimental examination published by Medina et al. (2011) of a free-fall drop test performed on a 15 t conventional Cubic block and a 16 t Cubipod® unit. The field results of the Cube drop tests were used to calibrate the model. The numerically simulated response

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Deng, Penghai, Quansheng Liu, Xing Huang, Qi Liu, Hao Ma, and Weiwei Li. "Acquisition of normal contact stiffness and its influence on rock crack propagation for the combined finite-discrete element method (FDEM)." Engineering Fracture Mechanics 242 (February 2021): 107459. http://dx.doi.org/10.1016/j.engfracmech.2020.107459.

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Zhang, Shirui, Shili Qiu, Pengfei Kou, Shaojun Li, Ping Li, and Siquan Yan. "Investigation of Damage Evolution in Heterogeneous Rock Based on the Grain-Based Finite-Discrete Element Model." Materials 14, no. 14 (2021): 3969. http://dx.doi.org/10.3390/ma14143969.

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Granite exhibits obvious meso-geometric heterogeneity. To study the influence of grain size and preferred grain orientation on the damage evolution and mechanical properties of granite, as well as to reveal the inner link between grain size‚ preferred orientation, uniaxial tensile strength (UTS) and damage evolution, a series of Brazilian splitting tests were carried out based on the combined finite-discrete element method (FDEM), grain-based model (GBM) and inverse Monte Carlo (IMC) algorithm. The main conclusions are as follows: (1) Mineral grain significantly influences the crack propagatio

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Gholaminejad, Ahmadreza, Ahmad Mahboubi, and Ali Noorzad. "Combined DEM-FDM modelling of encased stone column." E3S Web of Conferences 92 (2019): 16012. http://dx.doi.org/10.1051/e3sconf/20199216012.

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Combination of the continuum-based numerical methods and the discrete element method (DEM) could be a powerful way of simulating complex problems. This approach benefits from the capabilities of both methods. The main feature of the discrete element method is that the soil grains are considered as individual particles without need to impose any behaviour law in modelling the medium. The limitation of this method is, however, its high computational demand. In continuum based methods, on the other hand, it is impossible to trace micro scale phenomena. According to these facts, combining continuu

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Xiaoxiong, Guo, Wang Ning, Xu Xueliang, and Ye Zihui. "Analysis of Extent of Deformation Range and Failure Characteristics of Rocks Surrounding a Tunnel Crossing Fault Zone Based on FDEM." Advances in Civil Engineering 2022 (August 10, 2022): 1–12. http://dx.doi.org/10.1155/2022/9643584.

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The combined finite-discrete element method (FDEM) and laboratory test were selected to study the extent of deformation range and time-dependent deformation of surrounding rock during tunnel excavation without support in a fault-crossing tunnel project. FDEM was found to accurately reflect the deformation and failure characteristics of different surrounding rocks during stress release, including conjugate shear and extrusion. Analysis of the results showed that the disturbance range of surrounding rocks could reach 1.5 to 2.5 times the tunnel diameter when crossing the fault zone. The rock sur

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Fang, Liangfei, Chengmao Cao, Qing Li, Kuan Qin, Xingdong Sun, and Jun Ge. "Fracture Analysis of Compacted Clay Soil Beams with Offset Notches Based on Three-Point Bending Test: Experimental Characterization and Numerical Simulation." Advances in Civil Engineering 2022 (January 17, 2022): 1–17. http://dx.doi.org/10.1155/2022/3699196.

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The design and performance of tillage components such as subsoiler are generally characterized by the fracture features of soil mass in agricultural engineering, thus making the improvements of those tillage tools challenging due to the fact that the soil fracture mechanisms cannot be accurately explored and implemented. To alleviate this issue, in this paper, a physical three-point bending (TPB) test is conducted for investigating the fractural and fragmental characteristics of the compacted clay beams (CCB) with offset notches under the framework of mixed-mode I + II fracture, and the crack

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Karimi, Omid, Marie-Helene Fillion, and Philip Dirige. "A Methodology for Assessing the Impact of In Situ Fractures on the Intensity of Blast-Induced Damage." Mining 5, no. 1 (2025): 7. https://doi.org/10.3390/mining5010007.

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Drilling and blasting is the conventional method used for rock fragmentation in open pit mining. Blast-induced damage can reduce the level of stability of benches and pit slopes. To develop an optimal blast design, an adequate knowledge of the rock properties and in situ fractures is needed. Fractures are generally the paths of least resistance for explosive energy and can affect the intensity of blast-induced damage. Discrete Fracture Networks (DFNs) are 3D representations of joint systems used for estimating the distribution of in situ fractures in a rock mass. The combined finite/discrete e

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Zhang, Bangwen, Anjun Deng, Dangwei Wang, Yang Shi, and Xianyong Dong. "Numerical Analysis of Motion Characteristics of Sliding or Rolling and Saltation of Sediment Particles under Turbulent Flow." Water 14, no. 9 (2022): 1506. http://dx.doi.org/10.3390/w14091506.

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The processes of sediment particle movement were studied through numerical simulation using a coupled method with focus on discussing the characteristics of sliding or rolling and saltation sediment particles, respectively. Turbulent flow was simulated using large eddy simulation (LES). The sediment particle was simulated using the combined finite-discrete element method (FDEM). The interaction forces of turbulent flow and sediment particle were calculated using the immersed boundary method (IBM). It indicated that the collisions of saltating particle with low concentration increase the saltat

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Cai, Weibing, Ke Gao, Yan Qiao, Shu-Gang Ai, and Yu Feng. "A 2D continuous-discontinuous unified pore-fracture seepage model for hydro-mechanical coupling in the combined finite-discrete element method (FDEM) using node binding scheme." Computers and Geotechnics 173 (September 2024): 106517. http://dx.doi.org/10.1016/j.compgeo.2024.106517.

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Min, G. J., D. Fukuda, S. W. Oh, Y. Nara, H. Liu, and S. H. Cho. "Numerical Analysis of Anisotropic Influence of Mode-I Fracture Toughness under Dynamic Loading for Rock using GPGPU-based Three-Dimensional Combined Finite-Discrete Element Method (FDEM)." IOP Conference Series: Earth and Environmental Science 861, no. 3 (2021): 032077. http://dx.doi.org/10.1088/1755-1315/861/3/032077.

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Mai, Longquan, and Hao Li. "Finite–Discrete Element Method Simulation Study on Development of Water-Conducting Fractures in Fault-Bearing Roof under Repeated Mining of Extra-Thick Coal Seams." Sustainability 16, no. 12 (2024): 5177. http://dx.doi.org/10.3390/su16125177.

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The formation of water-conducting fractures in overlying strata caused by underground coal mining not only leads to roof water inrush disasters, but also water-conducting fractures penetrate the aquifer, resulting in the occurrence of a mine-water-inrush disaster and the loss of water resources. It destroys the sustainability of surface water and underground aquifers. This phenomenon is particularly significant in extra-thick coal seams and fault-bearing areas. Numerical simulation is an effective method to predict the failure range of mining overburden rock with low cost and high efficiency.

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Jia, Jun, Xiangjun Pei, Gang Liu, Guojun Cai, Xiaopeng Guo, and Bo Hong. "Failure Mechanism of Anti-Dip Layered Soft Rock Slope under Rainfall and Excavation Conditions." Sustainability 15, no. 12 (2023): 9398. http://dx.doi.org/10.3390/su15129398.

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The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially in soft metamorphic rock slopes. This paper aims to explore the instability mechanism of anti-dip layered soft metamorphic rock landslides. Taking the slope of a mining area in the southern Qinling Mountains of China as a geological prototype, a large-scale centrifuge model test and a numerical simulation based on the combined finite and discrete element method (FDEM) were performed. The deformation and failure process, failure mode, and failure path of the slope under rainfall and excav

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Huang, Weihan, Ke Gao, and Yu Feng. "Predicting Stick-Slips in Sheared Granular Fault Using Machine Learning Optimized Dense Fault Dynamics Data." Journal of Marine Science and Engineering 12, no. 2 (2024): 246. http://dx.doi.org/10.3390/jmse12020246.

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Predicting earthquakes through reasonable methods can significantly reduce the damage caused by secondary disasters such as tsunamis. Recently, machine learning (ML) approaches have been employed to predict laboratory earthquakes using stick-slip dynamics data obtained from sheared granular fault experiments. Here, we adopt the combined finite-discrete element method (FDEM) to simulate a two-dimensional sheared granular fault system, from which abundant fault dynamics data (i.e., displacement and velocity) during stick-slip cycles are collected at 2203 “sensor” points densely placed along and

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Urlainis, Alon, Gili Lifshitz Sherzer, and Igal M. Shohet. "Multi-Scale Integrated Corrosion-Adjusted Seismic Fragility Framework for Critical Infrastructure Resilience." Applied Sciences 14, no. 19 (2024): 8789. http://dx.doi.org/10.3390/app14198789.

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This study presents a novel framework for integrating corrosion effects into critical infrastructure seismic risk assessment, focusing on reinforced concrete (RC) structures. Unlike traditional seismic fragility curves, which often overlook time-dependent degradation such as corrosion, this methodology introduces an approach incorporating corrosion-induced degradation into seismic fragility curves. This framework combines time-dependent corrosion simulation with numerical modeling, using the finite–discrete element method (FDEM) to assess the reduction in structural capacity. These results are

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Liu, Quansheng, Weiqin Wang, and Hao Ma. "Parallelized combined finite‐discrete element (FDEM) procedure using multi‐GPU with CUDA." International Journal for Numerical and Analytical Methods in Geomechanics 44, no. 2 (2019): 208–38. http://dx.doi.org/10.1002/nag.3011.

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Song, Yushan, Yuqing Fan, Huaming An, Hongyuan Liu, and Shunchuan Wu. "Investigation of the Dynamic Pure-Mode-II Fracture Initiation and Propagation of Rock during Four-Point Bending Test Using Hybrid Finite–Discrete Element Method." Sustainability 14, no. 16 (2022): 10200. http://dx.doi.org/10.3390/su141610200.

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A hybrid finite–discrete element method (FDEM) is proposed to investigate dynamic pure-mode-II fracture behaviors. The transition of continuum to discontinuum was applied to the FDEM through the use of three fracture modes, so that the whole fracture process could be modeled naturally. The FDEM was then employed to model the dynamic pure-mode-II fracture behavior of rock during a four-point bending test with a prefabricated notch. The results showed that the fracture initiated from the tip of the prefabricated notch under a relatively lower loading rate, i.e., 1 m/s and 5 m/s. However, when th

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Sun, Kangning, Liheng He, Xiaotong Zhuang, and Shijie Zheng. "Research on Blasting Fragment Distribution and Parameter Optimization of Open-Pit Mines Based on FDEM." Highlights in Science, Engineering and Technology 106 (July 16, 2024): 466–72. http://dx.doi.org/10.54097/g70ssb84.

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This study employs the Finite-Discrete Element Coupling Method (FDEM) to simulate and optimize the blasting process in open-pit mines, focusing on the fragmentation distribution and key blasting parameters. The FDEM, which integrates the finite element (FE) and discrete element (DE) methods, provides a comprehensive approach to simulate the initiation, propagation, and coalescence of cracks in rock materials under external loads. The research utilizes field monitoring data from Zijinshan Gold and Copper Mine, encompassing stress waves, vibration velocities, and blasting block distributions dur

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Cuomo, S., M. Camusso, P. Gambardella, S. Moretti, and L. Frigo. "Modelling the impact of landslides on geosyntethics-reinforced barrier using DEM-FDM analyses." IOP Conference Series: Materials Science and Engineering 1260, no. 1 (2022): 012035. http://dx.doi.org/10.1088/1757-899x/1260/1/012035.

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Abstract Geosynthetics-reinforced barriers can be used as protection structures for mitigating the risk posed by fast-moving flow-like landslides such as debris avalanches. In the design of such kind of barriers a crucial role is generally played by the correct analysis of the mutual interaction between the flowing mass and the barrier. This paper is focused on the evaluation of the impact forces and the deformation mechanisms of the barrier. An extensive numerical campaign of dynamic analyses has been performed by means of a coupled 3D Discrete Element Model (DEM) code, namely Particle Flow C

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