Detail publikace

# Probabilistic Approach in Determining Operation Resistance of Switches

PLÁŠEK, O., SALAJKA, V.

Originální název

Probabilistic Approach in Determining Operation Resistance of Switches

Anglický název

Probabilistic Approach in Determining Operation Resistance of Switches

Jazyk

en

Originální abstrakt

The operation (throwing) resistance of switches depends on the both the design and operation condition. Some of the switch design parameters are defined; some other parameters can be specified as random quantities. As random quantities there can be specified e.g. friction coefficients depending on the lubrication of the slide baseplates, the height alignment of the slide baseplates, the changes of the rail profile due to wear, etc. For selected types of turnouts there have been developed computation models using the method of finite elements. These models have been applied to compute the parameters of the random quantity representing the operation resistance of switches. The computations have been performed using the Monte Carlo method. Deflection curves of switch rails in the course of setting displacement have been determined. The positioning of setting devices has been optimised. Maximum value of the throwing resistance of the switches in the course of the setting process has been analysed. Parameters of the random quantity describing this value have been related to parameters characterizing the switch setting and locking device. With respect to required reliability of switch operation there have been defined limiting values of the operation resistance of the switches. These limits have been included in the technical standards of Czech Railways.

Anglický abstrakt

The operation (throwing) resistance of switches depends on the both the design and operation condition. Some of the switch design parameters are defined; some other parameters can be specified as random quantities. As random quantities there can be specified e.g. friction coefficients depending on the lubrication of the slide baseplates, the height alignment of the slide baseplates, the changes of the rail profile due to wear, etc. For selected types of turnouts there have been developed computation models using the method of finite elements. These models have been applied to compute the parameters of the random quantity representing the operation resistance of switches. The computations have been performed using the Monte Carlo method. Deflection curves of switch rails in the course of setting displacement have been determined. The positioning of setting devices has been optimised. Maximum value of the throwing resistance of the switches in the course of the setting process has been analysed. Parameters of the random quantity describing this value have been related to parameters characterizing the switch setting and locking device. With respect to required reliability of switch operation there have been defined limiting values of the operation resistance of the switches. These limits have been included in the technical standards of Czech Railways.

Dokumenty

BibTex

``````
@inproceedings{BUT10773,
author="Otto {Plášek} and Vlastislav {Salajka}",
title="Probabilistic Approach in Determining Operation Resistance of Switches",
annote="The operation (throwing) resistance of switches depends on the both the design and operation condition. Some of the switch design parameters are defined; some other parameters can be specified as random quantities. As random quantities there can be specified e.g. friction coefficients depending on the lubrication of the slide baseplates, the height alignment of the slide baseplates, the changes of the rail profile due to wear, etc.
For selected types of turnouts there have been developed computation models using the method of finite elements. These models have been applied to compute the parameters of the random quantity representing the operation resistance of switches. The computations have been performed using the Monte Carlo method. Deflection curves of switch rails in the course of setting displacement have been determined. The positioning of setting devices has been optimised.
Maximum value of the throwing resistance of the switches in the course of the setting process has been analysed. Parameters of the random quantity describing this value have been related to parameters characterizing the switch setting and locking device. With respect to required reliability of switch operation there have been defined limiting values of the operation resistance of the switches. These limits have been included in the technical standards of Czech Railways.
",