scholarly journals IC Project Results w17_unedetection -“Simulation of underground nuclear explosions using the combined finite discrete element method” and “Fracture Formation and Permeability Evolution at in situ Pressure, Temperature and Stress Conditions”

2019 ◽  
Author(s):  
Bryan Jeffry Euser ◽  
Esteban Rougier ◽  
Earl E. Knight ◽  
Zhou Lei
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Stress Conditions ◽  
Permeability Evolution ◽  
Underground Nuclear Explosions ◽  
Nuclear Explosions ◽  
Fracture Formation ◽  
Element Method

scholarly journals Coupling in-situ X-ray micro- and nano-tomography and discrete element method for investigating high temperature sintering of metal and ceramic powders

2017 ◽  
Vol 140 ◽  
pp. 13006 ◽  
Author(s):  
Zilin Yan ◽  
Christophe L. Martin ◽  
Didier Bouvard ◽  
David Jauffrès ◽  
Pierre Lhuissier ◽  
...  
Keyword(s):  
High Temperature ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Ceramic Powders ◽  
X Ray ◽  
Element Method

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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