Publication detail

Representation of bulk and surface crushing phenomenon in DEM model of railway ballast.

DUBINA, R. ELIÁŠ, J.

Original Title

Representation of bulk and surface crushing phenomenon in DEM model of railway ballast.

Type

conference paper

Language

English

Original Abstract

To simulate ballast behaviour in railway track using Discrete Element Models (DEM), it is reasonable to take into account the crushing and the abrasion of grains. Nowadays, two approaches have been used in discrete modelling. The first approach represents each grain as an assembly of smaller particles with cohesive contacts between them. The crushing is represented by rupturing of contacts between particles. Such approach is universal, but demands very high computational resources. Therefore, the second approach is utilized here. At the beginning every ballast grain is modelled as one rigid body and may be replaced by several smaller particles later. Both crushing and abrasion is considered. Crushing is studied on model of oedometric test of railway ballast.

Keywords

Railway ballast, Discrete Element Method (DEM), bulk crushing, oedometric test

Authors

DUBINA, R.; ELIÁŠ, J.

RIV year

2015

Released

28. 9. 2015

Location

Barcelona, Španělsko

ISBN

978-84-944244-7-2

Book

Proceedings of Particle-based Methods IV – Fundamentals and Applications

Pages from

34

Pages to

40

Pages count

7

BibTex

@inproceedings{BUT124066,
  author="Radek {Dubina} and Jan {Eliáš}",
  title="Representation of bulk and surface crushing phenomenon in DEM model of railway ballast.",
  booktitle="Proceedings of  Particle-based Methods IV – Fundamentals and Applications",
  year="2015",
  pages="34--40",
  address="Barcelona, Španělsko",
  isbn="978-84-944244-7-2"
}