Identification of parameters for DEM model of railway ballast

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F15%3APU118160" target="_blank" >RIV/00216305:26110/15:PU118160 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Identification of parameters for DEM model of railway ballast

Popis výsledku v původním jazyce

The railway ballast is an important component of the railway structure that affects service life of the whole railway track and quality of railway traffic. Many different experiments and in-situ measurements are performed in order to understand the railway ballast behaviour. However, the experiments and measurements are often expensive and limited, therefore the need of computer simulation arises. Due to the discrete character of railway ballast it is advantageous to simulate it by discrete elements like spheres, ellipsoids, tetrahedrons, polyhedrons, etc. using well established Discrete Element Method (DEM). To achieve correspondence between the real and the computer experiments it is necessary to identify model parameters. The contribution is focusedon identification of the two fundamental parameters of the DEM ballast model, particularly the normal contact stiffness and the angle of internal friction. These are identified form simulation of Oedometric test and Composite Element Tes

Název v anglickém jazyce

Identification of parameters for DEM model of railway ballast

Popis výsledku anglicky

The railway ballast is an important component of the railway structure that affects service life of the whole railway track and quality of railway traffic. Many different experiments and in-situ measurements are performed in order to understand the railway ballast behaviour. However, the experiments and measurements are often expensive and limited, therefore the need of computer simulation arises. Due to the discrete character of railway ballast it is advantageous to simulate it by discrete elements like spheres, ellipsoids, tetrahedrons, polyhedrons, etc. using well established Discrete Element Method (DEM). To achieve correspondence between the real and the computer experiments it is necessary to identify model parameters. The contribution is focusedon identification of the two fundamental parameters of the DEM ballast model, particularly the normal contact stiffness and the angle of internal friction. These are identified form simulation of Oedometric test and Composite Element Tes

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

13th INTERNATIONAL CONFERENCE AND EXHIBITION EDINBURGH

ISBN

0-947644-80-6

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

1-7

Název nakladatele

School of Engineering

Místo vydání

UK, Scotland

Místo konání akce

Scotland

Datum konání akce

30. 6. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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