Detail publikačního výsledku

DEM simulation of ballast oedometric test

ELIÁŠ, J.

Originální název

DEM simulation of ballast oedometric test

Anglický název

DEM simulation of ballast oedometric test

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

ELIÁŠ, J.

Rok RIV

2015

Vydáno

12.05.2014

Místo

Svratka, Česká republika

ISBN

978-80-214-4871-1

Kniha

Engineering Mechnaics 2014

ISSN

1805-8248

Periodikum

Engineering Mechanics

Stát

Česká republika

Strany od

1

Strany do

4

Strany počet

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"
}