Discrete and continuum modelling of excavator bucket filling

Coetzee, C.J.; Basson, Anton; Vermeer, P. A.

doi:10.1016/j.jterra.2006.07.001

Cited by 50 publications

(25 citation statements)

References 18 publications

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“…Using MPM with a frictional contact algorithm, Bardenhagen et al [18] simulated the grain interaction and stress bridging in granular material. Coetzee et al [19] presented the continuum simulation of excavator bucket filling using MPM. Their research [19] showed MPM accurately predicted the free surface shape of the granular material flowing into the bucket.…”

Section: Introductionmentioning

confidence: 99%

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Large deformation failure analysis of the soil slope based on the material point method

Huang

Guo

et al. 2015

Comput Geosci

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The failure analysis of the soil slope is a very important topic in the field of geomechanics. Being a fully Lagrangian particle method, the material point method (MPM) has distinct advantages in solving the extremely large deformation problem. For both cohesive and noncohesive soil slopes, the large deformation failure problems are analyzed using MPM and the Drucker-Prager constitutive model. For verification of the numerical method, the comparison between MPM and analytical solutions of the dam break problem is presented. Moreover, the numerical results by MPM are compared with the experimental results for the collapse of the aluminum-bar assemblage. Simulations reveal the cohesive soil slope under gravity has a shear band failure mode. Computational results show the reposed angle of non-cohesive soil slope is less than the internal friction angle, and the reason for this phenomenon is presented. The purpose of this study is to give a further understanding of the slope failure in different soil types and provide a computational tool for the failure analysis of soil slopes.

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Section: Introductionmentioning

confidence: 99%

“…Coetzee et al [19] presented the continuum simulation of excavator bucket filling using MPM. Their research [19] showed MPM accurately predicted the free surface shape of the granular material flowing into the bucket.…”

Section: Introductionmentioning

confidence: 99%

Large deformation failure analysis of the soil slope based on the material point method

Huang

Guo

et al. 2015

Comput Geosci

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“…It was applied to the modelling of anchors placed in soil [8], to excavator bucket filling [9], to problems of granular flow in a silo [10], to the simulation of experiments related to fault induced ground deformations [11], to run-out analysis of earthquakeinduced soil flows [12] and to geomembrane response to settlement in landfills [13]. Also, a quasi-static version of MPM has been developed for large deformations in geomechanics [14].…”

Section: Materials Point Methodsmentioning

confidence: 99%

Three Dimensional Analysis of a CFRD Dam Using the Material Point Method

Zabala¹,

Rodari²,

Oldecop³

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. Seismic safety of earth or rockfill dams and embankments is strongly conditioned by permanent displacements caused by earthquakes. For a severe earthquake, the permanent displacement pattern results from the combination of displacements generated by volumetric and shear plastic strains distributed within the structure, and those caused by sliding of the soil mass along one or more failure surfaces. Numerical procedures commonly used in practice do not consider the strain localization phenomena at failure surfaces and the associated mesh dependence of the solution. Typically, nonlinear finite element or finite difference codes yield an estimate of distributed deformations and dynamic response, without accounting for the plastic strain localization problem. In addition, some of the numerical approaches used in practice do not consider the change of configuration caused by large displacements. The material point method or MPM is a lagrangian "particle-mesh" numerical method. It has been previously used in modeling dynamic problems with large displacements and strain localization. With MPM, a body is discretized into a collection of lagrangian particles, which carry all the data needed to define the body's state. Interaction between particles takes place in a background fixed mesh, similar to those used in the finite element method. The MPM is applied in this paper to model the three dimensional dynamic response of Punta Negra dam, a concrete faced gravel dam which is being built in San Juan Province, Argentina..

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“…It is noteworthy that a continuum-based discrete approach named mesh-free FEM, exists, in which traditional finite elements are used no more [5], but the construction of a special shape function is necessary. Moreover, such localized shear lines, which are often observed in terramechanics, are said to be difficult to express, but no other report exists aside from that of Coetzee et al [6]. They applied the material-point method to the modeling of excavator bucket filling.…”

Section: Introductionmentioning

confidence: 99%