Kinetic response analysis of different types of baffle submitted to rock avalanches based on discrete element method

The model of an actual 4070 m3 bell-less top blast furnace with two parallel hoppers was established, and the distribution of the sinter, pellet, and lump ore in the hopper and the stock surface was analyzed based on the discrete element method. The results show that the distribution of different types of ores is not uniform in the hopper already. In the radial direction of the stock surface, the sinter volume fraction in the center and peripheral region of the stock surface is higher than that in the intermediate region of the stock surface, but the volume distribution of the pellet and lump ore is opposite to the sinter volume distribution. Owing to the size of lump ore is small, so the pressure drop of burden layer in the intermediate region of the stock surface is larger than that in the center and peripheral region. In the circumferential direction of the stock surface, the standard deviation of the volume distribution of the sinter, pellet, and lump ore is 1.28, 0.92 and 0.49, respectively.

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Modeling of the fragmentation by Discrete Element Method

DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ◽

10.1051/dymat/2009215 ◽

2009 ◽

Author(s):

C. Mariotti ◽

V. Michaut ◽

J. F. Molinari

Keyword(s):

Discrete Element Method ◽

Discrete Element ◽

Element Method

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Discrete element method to model cracking for two layer systems

TAPPI Journal ◽

10.32964/tj18.2.101 ◽

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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