Discrete Element Method Numerical Modelling on Crystallization of Smooth Hard Spheres under Mechanical Vibration

2007 ◽  
Vol 24 (7) ◽  
pp. 2032-2035 ◽  
Author(s):  
An Xi-Zhong
Keyword(s):  
Numerical Modelling ◽  
Discrete Element Method ◽  
Hard Spheres ◽  
Mechanical Vibration ◽  
Discrete Element ◽  
Element Method

scholarly journals Numerical modelling of suffusion by discrete element method: a new internal stability criterion based on mechanical behaviour of eroded soil

2017 ◽  
Vol 140 ◽  
pp. 10011
Author(s):  
Nadjibou Abdoulaye Hama ◽  
Tariq Ouahbi ◽  
Said Taibi ◽  
Hanène Souli ◽  
Jean-Marie Fleureau ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Discrete Element Method ◽  
Mechanical Behaviour ◽  
Stability Criterion ◽  
Discrete Element ◽  
Internal Stability ◽  
Element Method

Numerical Modelling of Masonry Dams Using the Discrete Element Method

2016 ◽  
pp. 171-199
Author(s):  
Eduardo Martins Bretas
Keyword(s):  
Numerical Modelling ◽  
Discrete Element Method ◽  
Seismic Analysis ◽  
Failure Mechanisms ◽  
Discrete Element ◽  
Structural Safety ◽  
Structural Behaviour ◽  
History Of ◽  
Numerical Tool ◽  
Element Method

This work concerns the numerical modelling of masonry dams using the Discrete Element Method. It begins with a review of the history of masonry dams and their behaviour. A numerical tool based on the Discrete Element Method developed specifically for the structural assessment of masonry dams is then presented. The mechanical calculations performed by the tool are discussed in detail, together with the approach used for the modelling of passive anchors and the modules for seismic analysis and hydromechanical analysis. Structural and hydraulic analyses of a diverse set of existing masonry dams conducted using the tool are then presented. The Discrete Element Method is shown to be capable of reproducing the structural behaviour of masonry dams and identifying their likely failure mechanisms as required for structural safety evaluations.

Discrete element method to model cracking for two layer systems

TAPPI Journal ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 101-108
Author(s):  
Daniel Varney ◽  
Douglas Bousfield
Keyword(s):  
Discrete Element Method ◽  
Flexural Modulus ◽  
Single Layer ◽  
Discrete Element ◽  
Flexural Stress ◽  
Layer System ◽  
Three Point Bending ◽  
Moving Force ◽  
Coating Layers ◽  
Element Method

Cracking at the fold is a serious issue for many grades of coated paper and coated board. Some recent work has suggested methods to minimize this problem by using two or more coating layers of different properties. A discrete element method (DEM) has been used to model deformation events for single layer coating systems such as in-plain and out-of-plain tension, three-point bending, and a novel moving force picking simulation, but nothing has been reported related to multiple coating layers. In this paper, a DEM model has been expanded to predict the three-point bending response of a two-layer system. The main factors evaluated include the use of different binder systems in each layer and the ratio of the bottom and top layer weights. As in the past, the properties of the binder and the binder concentration are input parameters. The model can predict crack formation that is a function of these two sets of factors. In addition, the model can predict the flexural modulus, the maximum flexural stress, and the strain-at-failure. The predictions are qualitatively compared with experimental results reported in the literature.

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