Publication detail

DEM simulation of ballast oedometric test

ELIÁŠ, J.

Original Title

DEM simulation of ballast oedometric test

Type

conference paper

Language

English

Original Abstract

The granular nature of the railway ballast in connection with fast dynamic loading makes it an ideal application of the Discrete Element Method (DEM). The contribution employs DEM to simulate the ballast behavior in large oedometric test. Ballast grains are represented by convex polyhedral particles with shape randomly generated via Voronoi tessellation. A novel algorithm to compute repulsive contact force based on intersecting volume of polyhedrons is presented. Crushing of grains is included via splitting the particles into smaller polyhedrons when some stress-based criterion is fulfilled.

Keywords

Discrete Element Method, polyhedrons, crushing, Voronoi tessellation, ballast

Authors

ELIÁŠ, J.

RIV year

2014

Released

12. 5. 2014

Location

Svratka, Česká republika

ISBN

978-80-214-4871-1

Book

Engineering Mechnaics 2014

ISBN

1805-8248

Periodical

Engineering Mechanics ....

State

Czech Republic

Pages from

1

Pages to

4

Pages count

4

BibTex

@inproceedings{BUT114205,
  author="Jan {Eliáš}",
  title="DEM simulation of ballast oedometric test",
  booktitle="Engineering Mechnaics 2014",
  year="2014",
  journal="Engineering Mechanics ....",
  pages="1--4",
  address="Svratka, Česká republika",
  isbn="978-80-214-4871-1",
  issn="1805-8248"
}