Viscoelastic contact model development for the discrete element simulations of mixing process in agitated drum

Cone penetration in-situ tests are commonly used to measure the cone index of the soils. This measurement process can be modelled very well with Discrete Element Method (DEM) if the parameters of the correct contact model are defined properly. In this paper the Hertz-Mindlin with bonding contact model are used and the effect of the properties of this contact model on soil’s penetration resistance is investigated. Our aim was to determine those contact parameters which play important role in the penetration process, thus are necessary to take into account while calibrating the discrete element soil model to the results of real penetration tests.

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Generalized Maxwell Viscoelastic Contact Model-Based Discrete Element Method for Characterizing Low-Temperature Properties of Asphalt Concrete

Journal of Materials in Civil Engineering ◽

10.1061/(asce)mt.1943-5533.0001390 ◽

2016 ◽

Vol 28 (2) ◽

pp. 04015122 ◽

Cited By ~ 4

Author(s):

Jiaolong Ren ◽

Lu Sun

Keyword(s):

Low Temperature ◽

Discrete Element Method ◽

Asphalt Concrete ◽

Discrete Element ◽

Contact Model ◽

Model Based ◽

Viscoelastic Contact ◽

Element Method

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A contact model for the normal force between viscoelastic particles in discrete element simulations

Powder Technology ◽

10.1016/j.powtec.2018.10.022 ◽

2019 ◽

Vol 342 ◽

pp. 985-991 ◽

Cited By ~ 5

Author(s):

Erik Olsson ◽

Denis Jelagin

Keyword(s):

Normal Force ◽

Discrete Element ◽

Contact Model ◽

Discrete Element Simulations

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A Comparative Numerical Study of Particle Mixing on Different Grate Designs Through the Discrete Element Method

Journal of Pressure Vessel Technology ◽

10.1115/1.2767338 ◽

2006 ◽

Vol 129 (4) ◽

pp. 593-600 ◽

Cited By ~ 22

Author(s):

Harald Kruggel-Emden ◽

Erdem Simsek ◽

Siegmar Wirtz ◽

Viktor Scherer

Keyword(s):

Granular Flow ◽

Numerical Study ◽

Discrete Element ◽

Two Dimensions ◽

Three Dimensions ◽

Mixing Process ◽

Particle Mixing ◽

Mixing Parameters ◽

Discrete Element Simulations ◽

Over Time

Based on LEAT’s discrete element codes, granular flow and mixing on conveying equipment are studied in two and three dimensions. Discrete element simulations, which are briefly introduced, provide detailed information on particle positions and velocities over time. This information is used to derive quantities characterizing the dynamic process of mixing. The main focus of the study presented is the mixing process of inhomogeneous particle ensembles on different grate types. For this purpose, the introduced mixing parameters are used to compare the mixing in a 3D situation with the corresponding 2D approximation on identical grates and to compare different grate designs in two dimensions.

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