ecms_neu_mini.png

Digital Library

of the European Council for Modelling and Simulation

 

Title:

Coupling Finite And Discrete Element Methods Using An Open Source And A Commercial Software

Authors:

Akos Orosz, Kornel Tamas, Janos P. Radics, Peter T. Zwierczyk

Published in:

 

 

 

(2018). ECMS 2018 Proceedings Edited by: Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen European Council for Modeling and Simulation. doi: 10.7148/2018-0005

 

ISSN: 2522-2422 (ONLINE)

ISSN: 2522-2414 (PRINT)

ISSN: 2522-2430 (CD-ROM)

 

32nd European Conference on Modelling and Simulation,

Wilhelmshaven, Germany, May 22nd – May 265h, 2018

 

 

Citation format:

Akos Orosz, Kornel Tamas, Janos P. Radics, Peter T. Zwierczyk (2018). Coupling Finite And Discrete Element Methods Using An Open Source And A Commercial Software, ECMS 2018 Proceedings Edited by: Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen European Council for Modeling and Simulation. doi: 10.7148/2018-0399

DOI:

https://doi.org/10.7148/2018-0399

Abstract:

There are many cases where mechanical engineering structures interact with bulk materials, e.g. cultivating and mining machines.

The tool of the machine has effect on the aggregate and vice versa. The aggregate puts complex forces on the machines. These loads are usually simplified and replaced with a mean, distributed force, which is the input of further computations (e.g. finite element (FEM) simulations). This can be done, because the difference between two different, but statically equivalent loads becomes very small at sufficiently large distances from load. However, near the area, where loads act, the results using the simplification are not real, therefore finding the optimal tool design is difficult.

The discrete element method (DEM) models the materials using particles (elements) with independent translational and rotational degrees of freedom and arising forces (interactions) between them. This allows the simulation and tracking of each particle independently, which makes DEM ideal for modelling bulk materials. The FEM is usually used for modelling continua. If DEM is coupled with FEM, the result is a detailed stress distribution near the loads. In the possession of the detailed stress state, the optimization of the tool can be performed, and a better construction may be created.

 

Full text: