Simulation of soil deformation and resistance at bar penetration by the Distinct Element Method

Tanaka, Hiroaki; Momozu, M.; Oida, Akira; Yamazaki, Minoru

doi:10.1016/s0022-4898(99)00013-0

Cited by 79 publications

(44 citation statements)

References 1 publication

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“…Local damping is adopted as well. Once the sample is created (unlike most of the numerical models describing the penetrometric driving (Tanaka et al, 2000)), the penetrometer is modeled by a series of particles bonded together by a combination of contact and parallel bond. This choice has been made to simulate and control penetrometric driving described by the wave propagation u(x,t) created by the impact of the hammer (figure 2).…”

Section: The Model and The Simulationmentioning

confidence: 99%

Dynamic cone penetration tests in granular media: Determination of the tip's dynamic load-penetration curve

Escobar¹,

Benz²,

Gourvès³

et al. 2013

AIP Conference Proceedings

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Abstract. In this article a two-dimensional discrete numerical model, realized in PFC 2D , is presented. This model is used in the dynamic penetration tests in a granular medium. Its objective being the validation of the measurement technique offered by Panda 3® (Benz et al. 2011) which is designed to calculate the tip's load-penetration curve for each impact in the soil where different parameters are used. To do so, we have compared the results obtained by calculation during the impacts to those measured directly in the model of a penetrometer through the installation of the gauges at the cone.

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Section: The Model and The Simulationmentioning

confidence: 99%

Dynamic cone penetration tests in granular media: Determination of the tip's dynamic load-penetration curve

Escobar¹,

Benz²,

Gourvès³

et al. 2013

AIP Conference Proceedings

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“…Although the experimental result could not be obtained and the validity of the simulation was, therefore, still unclear, it seemed interesting to know that the reaction at the root cap showed, on average, a slightly increasing tendency in terms of the depth direction. If the root elongation could be understood from the viewpoint of a similar mechanism of cone penetration into the soil, the trend in the figure might be similar to the result of penetration resistance of a cone into soil (Tanaka et al, 2000), although the soil resistance obtained is very small. …”

Section: Root Reaction In Elongationmentioning

confidence: 81%

“…As a tool for modelling, we applied the discrete element method (DEM) (Cundall and Strack, 1979), whose superiority could be well recognized in the dynamics of particulate media such as soil (Tanaka et al, 2000). The model parameters were identified from the results of experiments using a growth box.…”

Section: Background and Purpose Of The Studymentioning

confidence: 99%

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A model of root elongation by dynamic contact interaction

et al. 2008

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O Or ri ig gi in na al l r re es se ea ar rc ch h a ar rt ti ic cl le e A model of root elongation by dynamic contact interactionAbstract: Recent findings on the functions of roots from the chemical and biological standpoints have strengthened the need for research on the mechanisms of root growth by physical and mathematical approaches. This study was aimed at developing a root growth model, based on dynamic interactions between the root and its ambient environment. As a tool for modelling, we employed the discrete element method (DEM) with the assumption that root growth could be expressed in terms of dynamic interactions between growing root elements and soil elements. Using a corresponding time scale, the results of a DEM simulation indicated a sufficiently accurate shape of root elongation, which could be verified by a root growth experiment. Moreover, a comparison of fractal dimensions from DEM results and experimental results showed almost similar values of 1.0, which is the dimension of a line.

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“…In recent years, a large number of discrete element methods are applied to agricultural production, and from simulation of working parts of furrow opener, subsoiler, covering device and dozer and other working parts touching the soil, the experimental data and simulation results obtained match highly [1][2][3]. In this paper, discrete element particle dynamics method -the discrete element method is used to simulate the moving behavior between granular materials.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Core Ploughshare Furrow Opener Based on the Discrete Element Method

Shiqiang¹,

Zifu²,

Jiang³

et al. 2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

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Abstract. The working process of the furrow opener is the state of movement between the working parts and the soil particles. The discrete element method (DEM) could not only truly express the geometrical characteristics of the soil particles but also be suitable for the experimental study on the furrow opener. In this paper, the physical and mechanical properties parameters of the surface soil particles were measured by the equipments, such as the soil triaxial apparatus, the direct shear apparatus, and so on. We established the discrete element 3-D model of the surface soil particles. The core ploughshare furrow opener was simulated by the discrete element software. We also revised the discrete element simulation model using the glass soil bin and the high-speed camera technology. The results of tests compared with discrete element simulation showed that both had the good correlation and the same laws. At the same time, we verified the validity of the simulation model parameter selection. We provided the effective method for the study and optimization design of the furrow opener.

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Simulation of soil deformation and resistance at bar penetration by the Distinct Element Method

Cited by 79 publications

References 1 publication

Dynamic cone penetration tests in granular media: Determination of the tip's dynamic load-penetration curve

Dynamic cone penetration tests in granular media: Determination of the tip's dynamic load-penetration curve

A model of root elongation by dynamic contact interaction

Experimental Research on the Core Ploughshare Furrow Opener Based on the Discrete Element Method

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