A coupled 3D discrete elements/isogeometric method for particle/structure interaction problems

Gao, Wei; Feng, Y. T.

doi:10.1007/s40571-019-00267-8

Cited by 13 publications

(6 citation statements)

References 41 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.…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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%

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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“…Since the 1980s, various non-disc/spherical or irregular particle shapes have been proposed in DEM including ellipses [16,17], ellipsoids [18], super-quadrics [19], cylinders [20], dilated or Minkowski-sum generated shapes [21,22,23], poly-ellipsoids [24,25] and poly-super-ellipsoids [26], polygons [27,28] and polyhedra [29,30,31,32]. More recent inclusions are level-set defined shapes based on CT scanned images [33], and analytical function represented smooth shapes, such as Fourier series-based for 2D shapes [34], NURBS (or B-spline) based [35] 3D shapes, spherical harmonic represented 3D objects [36,37], and isogeometric representation of 3D surfaces [38,39]. No doubt, these shapes significantly enhance the shape representation capability of DEM for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

An energy-conserving contact theory for discrete element modelling of arbitrarily shaped particles: Basic framework and general contact model

Feng

2021

Computer Methods in Applied Mechanics and Engineering

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“…A detailed description of contact search and calculation of contact between discrete spherical particles and boundary conditions discretized by finite elements was provided by Santasusana (2016), Santasusana et al (2016) which lay the foundation for the present work. Gao and Feng (2019) extended this idea by exchanging the FEM with the isogeometric method, however, this is not expected to confer any advantages for this paper's scope. Irazábal et al (2019) conducted a detailed investigation of suitable time integrators, especially with regard to the integration of the rotational motion, which is of great importance in the present case.…”

Section: Introductionmentioning

confidence: 99%

Advanced Modeling and Simulation of Rockfall Attenuator Barriers Via Partitioned DEM-FEM Coupling

Sautter

Hofmann

Wendeler³

et al. 2021

Front. Built Environ.

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Attenuator barriers, in contrast to conventional safety nets, tend to smoothly guide impacting rocks instead of absorbing large amounts of strain energy arresting them. It has been shown that the rock’s rotation plays an important role in the bearing capacity of these systems. Although experimental tests have to be conducted to gain a detailed insight into the behavior of both the structures and the rock itself, these tests are usually costly, time-consuming, and offer limited generalizability to other structure/environment combinations. Thus, in order to support the engineer’s design decision, reinforce test results and confidently predict barrier performance beyond experimental configurations this work describes an appropriate numerical modeling and simulation method of this coupled problem. For this purpose, the Discrete Element Method (DEM) and the Finite Element Method (FEM) are coupled in an open-source multi-physics code. In order to flexibly model rocks of any shape, sphere clusters are used which employ simple and efficient contact algorithms despite arbitrarily complicated shapes. A general summary of the FEM formulation is presented as well as detailed derivations of finite elements particularly pertinent to rockfall simulations. The presented modeling and coupling method is validated against experimental testing conducted by the company Geobrugg. Good agreement is achieved between the simulated and experimental results, demonstrating the successful practical application of the proposed method.

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A coupled 3D discrete elements/isogeometric method for particle/structure interaction problems

Cited by 13 publications

References 41 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

An energy-conserving contact theory for discrete element modelling of arbitrarily shaped particles: Basic framework and general contact model

Advanced Modeling and Simulation of Rockfall Attenuator Barriers Via Partitioned DEM-FEM Coupling

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