An improved 3D DEM-FEM contact detection algorithm for the interaction simulations between particles and structures

Zheng, Zumei; Miao, Zhuang; Chen, Shunhua; Zhao, Chunlai

doi:10.1016/j.powtec.2016.09.076

Cited by 59 publications

(14 citation statements)

References 42 publications

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“…These packages however are not established to readily detect the disc-segment contacts, or otherwise have to use a bridging scheme [39] to communicate contact detections across the domains. There are algorithms [11,12,40] developed to detect finite-discrete element interfacial contacts. These algorithms, however, are not applicable to the EFG-DE interface and a separate approach is required.…”

Section: Contact Detectionmentioning

confidence: 99%

“…Also when the particle number increases, the implicit time schemes may require solving multiple matrices at each time step, which significantly increases the processing time [45]. Due to the above reasons, one common method in the coupled model is to determine the time step using explicit-explicit schemes [12,40], which is expressed as:…”

Section: Time Stepmentioning

confidence: 99%

“…A usual coupling method is to develop the finitediscrete element models (FDEM) [4][5][6][7][8][9]. For the finite element analyses, meshing, re-meshing, or mesh distortion sometimes adds to the computational expenses or comprises the simulation accuracy [10][11][12][13]. Similar meshing problems occur to other mesh-based numerical methods, such as the finite difference [14,15].…”

Section: Introductionmentioning

confidence: 99%

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A Mesh-Free Approach for Multiscale Modeling in Continuum–Granular Systems

Wang

Deng

Taheri

et al. 2020

Int. J. Comput. Methods

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Geotechnical systems often examine interactions that occur between continuum bodies and granular soils. The systems and interactions can be accurately simulated by using multiscale coupling approaches. The model for the continuum bodies is often constructed into a mesh. The meshing, however, is time consuming for a huge spatial system and if distorted is subject to adjustments. A mesh-free approach can be used to eliminate these drawbacks. In this study, a mesh-free approach for simulating continuum–granular systems is presented. This approach combines element-free Galerkin (EFG) and discrete element (DE) methods to approximate the interactions. The capabilities of the coupled EFG–DE method are validated through its solving two example problems: the cantilever beam–disc system and Cundall’s Nine Disc Test. The proposed approach appears to be an efficient and promising tool to model multiscale, multibody contacting problems.

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Section: Contact Detectionmentioning

confidence: 99%

Section: Time Stepmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Mesh-Free Approach for Multiscale Modeling in Continuum–Granular Systems

Wang

Deng

Taheri

et al. 2020

Int. J. Comput. Methods

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“…Therefore, Zhao and colleagues [42][43][44] used the three-dimensional FEM-DEM to analyze the tire-sand interaction and simulated the driving behavior of a rigid tire on sand. Michael et al, 45 Zheng et al, 46,47 and Yang et al 48,49 established a three-dimensional FEM-DEM model of pneumatic tire and granular terrain using self-developed calculation programs to study the tractive performance of tires on sand under different slip conditions. In these studies, all the tire models were rigid tires or simplified pneumatic tires which do not describe the mainly bearing structures of the radial tire such as belt layers, cord ply layers, and cap ply layers so that they cannot accurately predict the complex mechanics of the radial tire and its principal deformation.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on tractive performance of off-road tire on gravel road using a calibrated finite element method–discrete element method model and experimental validation

Zeng

Yang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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The interaction between off-road tires and granular terrain has a great influence on the tractive performance of off-road vehicles. However, the finite element method or the discrete element method cannot effectively study the interaction between off-road tires and granular terrain. The three-dimensional combined finite element and discrete element method is applied to handle this problem. In this study, a calibrated finite element method–discrete element method model is established, in which the finite element model of off-road tire is validated by stiffness tests, while the discrete element model of gravel particles is validated by triaxial compression tests. The calibrated finite element method–discrete element method model can describe the structural mechanics of the off-road tire and the macroscopic mechanical properties of the gravel road. Tractive performance simulations of the off-road tire on gravel road under different slip conditions are performed with the commercial software LS-DYNA. The simulation results are basically corresponded with the soil-bin test results in terms of granular terrain deformation and tractive performance parameters versus the slip rates. Finally, the effects of tread pattern, wheel load, and tire inflation pressure on tractive performance of off-road tire on granular terrain are investigated. It indicates that the calibrated finite element method–discrete element method can be an effective tool for studying the tire–granular terrain interaction and predicting the tractive performance of off-road tire on granular terrain.

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“…The DEM has its advantages in analyzing discrete materials and FEM is already quite mature in solving continuum problems. 28–31 DEM is used in this study to explore the transportation property and the degree of wear of scraper conveyor. In addition, the FEM is also applied in studying the deformations of scraper conveyor.…”

Section: Introductionmentioning

confidence: 99%

The transporting efficiency and mechanical behavior analysis of scraper conveyor

Wang

Zhao-jian

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Scraper conveyor is the main equipment for underground coal transportation, and its high-efficiency and smooth operation is of great significance to safety production. This study simulated the process of transporting bulk coal by the scraper conveyor using the discrete element method. Transporting efficiency of scraper conveyor affected by the chain speed, static frictional coefficient, particle size, and laying angle was studied. Then the relationship between the chain speed, static frictional coefficient and the chute wear was explored. The stress and deformation characteristics of the chute during the transportation were studied by coupling the discrete element method and finite element method. Results showed that the mass flow rate changed significantly with the chain speed and static frictional coefficient, while it varied slightly with the change of particle size and laying angle; the higher chain speed and larger bulk coal led to more serious wear of the chute, and large stress mainly concentrated at the direct contact area and the area under the impact load from the bulk coal. Therefore, when designing the chute structure, it is necessary to ensure the wear resistance and strength of the contact area on the chute. The results could provide a theoretical basis for structural optimization of scraper conveyor.

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An improved 3D DEM-FEM contact detection algorithm for the interaction simulations between particles and structures

Cited by 59 publications

References 42 publications

A Mesh-Free Approach for Multiscale Modeling in Continuum–Granular Systems

A Mesh-Free Approach for Multiscale Modeling in Continuum–Granular Systems

Numerical analysis on tractive performance of off-road tire on gravel road using a calibrated finite element method–discrete element method model and experimental validation

The transporting efficiency and mechanical behavior analysis of scraper conveyor

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