scholarly journals A discrete element method for dynamic simulation of arbitrary bodies

2015 ◽  
Vol 25 (4) ◽  
pp. 473-482
Author(s):  
A.S. Karavaev ◽  
◽  
S.P. Kopysov ◽  
A.S. Sarmakeeva ◽  
◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Dynamic Simulation ◽  
Discrete Element ◽  
Element Method

Ellipse Particle Modeling for Fresh Concrete and Dynamic Simulation of Slump Test

2010 ◽  
Vol 168-170 ◽  
pp. 746-750
Author(s):  
Quan Yuan ◽  
Zhan Qi Guo
Keyword(s):  
Discrete Element Method ◽  
Numerical Method ◽  
Dynamic Simulation ◽  
Experimental Research ◽  
Fresh Concrete ◽  
Discrete Element ◽  
Qualitative Simulation ◽  
Slump Test ◽  
Particle Modeling ◽  
Element Method

The Discrete Element Method(DEM) has become a powerful numerical method for analysing discontinuous media. This paper provides a new ellipse particle modeling of fresh concrete by DEM. So far, research has been limited to experimental research and qualitative simulation. In this research, the parameters are defined from rheology. Then, a quantitative simulation is proposed. Slumping behaviors of fresh concrete are simulated.

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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