Numerical Analysis of Dynamical Response in Railway Switches and Crossings

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F15%3APU137083" target="_blank" >RIV/00216305:26110/15:PU137083 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1201/b21811-233" target="_blank" >http://dx.doi.org/10.1201/b21811-233</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1201/b21811-233" target="_blank" >10.1201/b21811-233</a>

Result language

angličtina

Original language name

Numerical Analysis of Dynamical Response in Railway Switches and Crossings

Original language description

Extreme stresses in all components of permanent way occur in switches and crossings during the passage of railway vehicles. Additional dynamic loading originates from changes in the track stiffness along the railway turnout, or alternatively from impact forces caused at points with geometrical imperfections. The stresses can be reduced by controlling track stiffness using rail fastenings with rail pads of different elasticity, or special elastic pads in slide plates in switches. A procedure for the numerical analysis of the dynamic response during the passage of railway vehicles is described. The solution is based on the finite element method (FEM), which is used for the calculation of track stresses. An FEM model was used with a fine structure that included all components of switches and crossings, including movable parts. The excitation forces are defined on the basis of the assumed interaction between track and vehicle. The track stiffness defined by FEM analyses is used for the calculation of dynamic vertical and lateral wheel load (Q and Y forces). A special model of a railway vehicle was built with the aim of calculating the forces at points where abrupt stiffness changes occur, as well as geometrical imperfections in the frog structure. The obtained excitation forces are backwards applied in the dynamic response calculation by the FEM. Dynamic response is analyzed by the direct integration of differential kinetic equations. The analyses described above were used as a tool for the design of track stiffness controlled by rail pad elasticity. The final arrangement of rail fastenings in the switches and crossings of a typical turnout structure was obtained via the optimization of the dynamic response within the interaction between railway track and vehicle.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TA01031297" target="_blank" >TA01031297: Increasing the quality of track in switches by flexibility</a><br>

Continuities

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

Publication year

2015

Confidentiality

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

Article name in the collection

Applied System Innovation - Proceedings of the International Conference on Applied System Innovation, ICASI 2015

ISBN

9781138028937

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

1163-1168

Publisher name

Neuveden

Place of publication

Osaka, Japonsko

Event location

Osaka

Event date

May 22, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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