Simulation of fracture propagation in fibre-reinforced concrete using FDEM: an application to tunnel linings

Farsi, Ado; Bedi, Ashwani; Latham, John; Bowers, Kathleen

doi:10.1007/s40571-019-00305-5

Cited by 24 publications

(3 citation statements)

References 30 publications

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“…In 2020, a special issue titled "combined finite discrete element method and virtual experimentation" were published in the Journal of Computational Particle Mechanics. The issue presented the fundamental developments (Gao and Feng, 2020;Lei et al, 2020;Yan et al, 2020;Knight et al, 2020;Joulin et al, 2020), simulation technologies (Mohammadnejad et al, 2020;Munjiza et al, 2020a;Wang et al, 2020) and applications (Okubo et al, 2020;Boyce et al, 2020;Munjiza et al, 2020b;Chau et al, 2020;Zhang et al, 2020;Farsi et al, 2020) of the method. It can be seen that parallel accelerated computing, multi-field coupling, multi-field applications, as well as the fundamental theory development are the trend of the method.…”

Section: Introductionmentioning

confidence: 99%

Y-Mat: an improved hybrid finite-discrete element code for addressing geotechnical and geological engineering problems

Liu

Zhang

et al. 2022

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PurposeContinua and discontinua coexist in natural rock materials. This paper aims to present an improved approach for addressing the mechanical response of rock masses based on the combined finite-discrete element method (FDEM) proposed by Munjiza.Design/methodology/approachSeveral algorithms have been programmed in the new approach. The algorithms include (1) a simpler and more efficient algorithm to calculate the contact force; (2) An algorithm for tangential contact force closer to the actual physical process; (3) a plastic yielding criterion (e.g. Mohr-Coulomb) to modify the elastic stress for fitting the mechanical behavior of elastoplastic materials; and (4) a complete code for the mechanical calculation to be implemented in Matrix Laboratory (MATLAB).FindingsThree case studies, including two standard laboratory experiments (uniaxial compression and Brazilian split test) and one engineering-scale anti-dip slop model, are presented to illustrate the feasibility of the Y-Mat code and its ability to deal with multi-scale rock mechanics problems. The results, including the progressive failure process, failure mode and trajectory of each case, are acceptable compared to other corresponding studies. It is shown that, the code is capable of modeling geotechnical and geological engineering problems.Originality/valueThis article gives an improved FDEM-based numerical calculation code. And, feasibility of the code is verified through three cases. It can effectively solve the geotechnical and geological engineering problems.

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Section: Introductionmentioning

confidence: 99%

Y-Mat: an improved hybrid finite-discrete element code for addressing geotechnical and geological engineering problems

Liu

Zhang

et al. 2022

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“…It can simulate the behavioral process of materials from continuous deformation to discontinuous deformation. In the field of civil engineering, this method has been applied to analyze the deformation of rocks surrounding highway construction and the development of cracks in concrete structures and to perform simulation tests of the mass strength of various rock and soil types [24][25][26][27], all of which demonstrated good computational and simulation performances.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Extent of Deformation Range and Failure Characteristics of Rocks Surrounding a Tunnel Crossing Fault Zone Based on FDEM

Xiaoxiong

Wang

et al. 2022

Advances in Civil Engineering

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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 surrounding the tunnel was found to incur significant conjugate shear deformation and extrusion deformation: conjugate shear deformation was identified as dominant in the deep rock mass, whereas extrusion deformation prevailed in the rock mass near the cave wall. The conjugate shear distribution was represented as a spiral line of deformation circling around the tunnel section, with an elliptical main deformation zone with its long axis parallel to the fault plane. Compared with the findings when crossing the intact rock mass, the deformation of the surrounding rocks when crossing the fault zone was characterized by rapid development, deep expansion area, and large deformation. The study conclusions were that supporting bolts and steel arches should be implemented timely when excavating fault zones and that both lithology and optimal construction timing were essential considerations in determining the length of the supporting bolts.

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“…e modelled results indicates that the proposed method is useful for the fracture mechanics analysis and design of the FGMs structures. Farsi et al used the FDEM method to simulate fracture propagation in fibrereinforced-concrete-(FRC-) lined tunnels [31]. e modelled results show the capabilities of FDEM method for better understanding of the fracture mechanics and crack propagation in FRC tunnels.…”

Section: Introductionmentioning

confidence: 99%

Combined Finite‐Discrete Element Modelling of Dynamic Rock Fracture and Fragmentation during Mining Production Process by Blast

Song

Liu

et al. 2021

Shock and Vibration

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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 fracture propagation and resultant fragmentation process. In addition, the proposed method has well captured the crushed zone, cracked zone, and the radial long crack zone. After that, the FDEM is employed to model the dynamic fracture and resultant fragmentation process by blast during sublevel caving process in an underground mine. Then the FDEM has well modelled the stress propagation process, as well as the fracture initiation and fragmenting process. Finally, the effects of borehole spacing and initial gas pressure are discussed. It is concluded that the FDEM is a value numerical approach to study the dynamic rock fracture process by blast.

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Simulation of fracture propagation in fibre-reinforced concrete using FDEM: an application to tunnel linings

Cited by 24 publications

References 30 publications

Y-Mat: an improved hybrid finite-discrete element code for addressing geotechnical and geological engineering problems

Y-Mat: an improved hybrid finite-discrete element code for addressing geotechnical and geological engineering problems

Analysis of Extent of Deformation Range and Failure Characteristics of Rocks Surrounding a Tunnel Crossing Fault Zone Based on FDEM

Combined Finite‐Discrete Element Modelling of Dynamic Rock Fracture and Fragmentation during Mining Production Process by Blast

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