A preliminary model of high pressure roll grinding using the discrete element method and multi-body dynamics coupling

2016 ◽  
Vol 156 ◽  
pp. 32-42 ◽  
Author(s):  
Gabriel K.P. Barrios ◽  
Luís Marcelo Tavares
Keyword(s):  
High Pressure ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Preliminary Model ◽  
Body Dynamics ◽  
Multi Body ◽  
Element Method

Effect of the roll stud diameter on the capacity of a high-pressure grinding roll using the discrete element method

2020 ◽  
Vol 154 ◽  
pp. 106412 ◽  
Author(s):  
Yu Nagata ◽  
Yuki Tsunazawa ◽  
Kouji Tsukada ◽  
Yuichi Yaguchi ◽  
Yosuke Ebisu ◽  
...  
Keyword(s):  
High Pressure ◽  
Discrete Element Method ◽  
Discrete Element ◽  
High Pressure Grinding Roll ◽  
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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