[PDF] Top 20 Discrete element modelling of flexible fibre packing

... presents Discrete Element Model simulations of packing of non-cohesive flexible fibres in a cylindrical ...some modelling challenges in terms of stability which were overcome by imposing limits ... See full document

... The discrete element method (DEM) code for the current research work was validated against experimental results from AEAT [2001], a part of MODNET ...particle packing, and powder ... See full document

... Figure 9 shows the particle size distributions at a stress of 20 MPa from the unbonded simulation and two bonded simulations with the alternative bond breakage configura- tions. Both the simulation with ‘standard’ bonds ... See full document

... PBM modelling of the cone crusher ...random packing agglomerate used here is an isotropic particle (Li et al, 2013); in this case it is expected that the strength of the agglomerate is proportional to the ... See full document

... The material modelled in the current and previous work is Stone Mastic Asphalt (SMA), a dense gap- graded asphaltic mixture with a high content of course aggregate and binder rich mortar. The grading of the numerical ... See full document

... Abstract. The search of improvement of protective tech- niques against natural phenomena such as snow avalanches continues to use classic methods for calculating flexible structures. This paper deals with a new ... See full document

... Figs.17, 18, 19 and 20 show the further stages of the settling process, the evolution of the particle bed height has a good agreement with that obtained by Feng and Michaelides [3]. However, main differences are found ... See full document

... main modelling methods for dynamic analysis of a pipeline: finite element method (FEM), lumped parameter method (LPM) and discrete element method ... See full document

... volume packing fraction is the same for all the eight different ...radial packing density, solid packing fraction at the container wall is reduced compared to the rest of the bed, as denoted by the ... See full document

... The flexibility of the membrane is demonstrated by observing the failure modes after deformation. Figure 9 shows photographs of cemented specimens after shearing at 1 and 12 MPa confining pressure, revealing shear planes ... See full document

... Fig 12 shows the large increase in the number of windows connecting pores in cast porous metals made with 25vol.% addition of small beads. At these higher magnifications it is apparent that 3-4 pores are visible in a ... See full document

... An example of local dilation is overviewed in Figure 3, which is a region near the half-plane of the shear-cell. Note that the pushing-plate is below-right of the grain labelled A in Figure 3(a). As the plate moves ... See full document

... The discrete element method (DEM) has then been used to model the interaction between ballast and geogrid by simulating large box pull-out tests and comparing with experimental ... See full document

... and discrete phase simultaneously, and therefore, cannot be solved accurately by continu- ous or discrete approaches ...a discrete phase are important in applications as diverse as pharmaceutical ... See full document

... computational modelling of crack propagation is of crucial importance for understanding and predicting ...the discrete crack model, in which it is tried to mimic the observation that fracture induces a ... See full document

... This paper emphasizes and creates awareness of the be- haviour discrepancy of infilled steel frames, with similar percentages of openings, but different multiple openings’ positions as well as load conditions. A two ... See full document

... a discrete element method to develop lava dome models, and were able to simulate two distinct failure mechanisms: (1) shallow, super fi cial rockfalls and (2) deep-seated listric shear ... See full document

... The primary objectives of the above-mentioned research effort were to reduce track settlement rates, and to understand how grids interact with the ballast particles under moving wheel loads. A special apparatus, known as ... See full document

... Although only selected damping values were studied in impact simulation of the apple fruit on a hard surface the agreement in the features of the curve representing the behaviour of[r] ... See full document

... It is emphasised that the graph of stress versus strain could slightly change for each material as seen in Figure 2.3 . This fact could be implemented when inserting the graph of stress versus strain for materials into ... See full document