FE simulation of a cord-rubber composite tube subjected to bending due to operational loads on a railroad reverse curve with extremely low curve radius at sub-zero temperature

Gyula Szabó, K. Váradi

Research output: Contribution to journalConference article

Abstract

The aim of this study is to examine railway brake tubes subjected to bending due to operation on a railroad reverse curve with extremely low curve radius in case of critical load cases at -40 ℃ simulation has been performed in order to determine the input prescribed displacements of the FE simulation. Then, FE model is presented for the critical positions, without and with internal pressure. Stress and strain states have been analysed. Finally, a standard deflection test has been carried out along with the FE model of the deflection test based on the material model of the FE model of bending for experimental validation. Tsai-Hill failure indices are lower than 1 and equivalent stresses in rubber liners are lower than tensile strength of rubber for all load cases, so material failure is not imminent regarding such extreme operating conditions. With internal pressure applied, maximum failure indices tend to be lower. The deflection test results are in good agreement with the corresponding FE model deflection results, validating FE model of operation (reverse curve, -40 ℃).

Original languageEnglish
Pages (from-to)377-383
Number of pages7
JournalProceedings - European Council for Modelling and Simulation, ECMS
Volume33
Issue number1
Publication statusPublished - Jun 1 2019
Event33rd International ECMS Conference on Modelling and Simulation, ECMS 2019 - Caserta, Italy
Duration: Jun 11 2019Jun 14 2019

Fingerprint

Railroads
Rubber
Reverse
Tube
Radius
Composite
Deflection
Curve
Composite materials
Zero
Simulation
Temperature
Model
Internal
Critical Load
Tensile Strength
Experimental Validation
Railway
Brakes
Loads (forces)

Keywords

  • Bending
  • Cold environment
  • Cord-rubber tube
  • FE model
  • Filament-wound composite tube
  • Railway brake tube
  • Reverse curve

ASJC Scopus subject areas

  • Modelling and Simulation

Cite this

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title = "FE simulation of a cord-rubber composite tube subjected to bending due to operational loads on a railroad reverse curve with extremely low curve radius at sub-zero temperature",
abstract = "The aim of this study is to examine railway brake tubes subjected to bending due to operation on a railroad reverse curve with extremely low curve radius in case of critical load cases at -40 ℃ simulation has been performed in order to determine the input prescribed displacements of the FE simulation. Then, FE model is presented for the critical positions, without and with internal pressure. Stress and strain states have been analysed. Finally, a standard deflection test has been carried out along with the FE model of the deflection test based on the material model of the FE model of bending for experimental validation. Tsai-Hill failure indices are lower than 1 and equivalent stresses in rubber liners are lower than tensile strength of rubber for all load cases, so material failure is not imminent regarding such extreme operating conditions. With internal pressure applied, maximum failure indices tend to be lower. The deflection test results are in good agreement with the corresponding FE model deflection results, validating FE model of operation (reverse curve, -40 ℃).",
keywords = "Bending, Cold environment, Cord-rubber tube, FE model, Filament-wound composite tube, Railway brake tube, Reverse curve",
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AU - Szabó, Gyula

AU - Váradi, K.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - The aim of this study is to examine railway brake tubes subjected to bending due to operation on a railroad reverse curve with extremely low curve radius in case of critical load cases at -40 ℃ simulation has been performed in order to determine the input prescribed displacements of the FE simulation. Then, FE model is presented for the critical positions, without and with internal pressure. Stress and strain states have been analysed. Finally, a standard deflection test has been carried out along with the FE model of the deflection test based on the material model of the FE model of bending for experimental validation. Tsai-Hill failure indices are lower than 1 and equivalent stresses in rubber liners are lower than tensile strength of rubber for all load cases, so material failure is not imminent regarding such extreme operating conditions. With internal pressure applied, maximum failure indices tend to be lower. The deflection test results are in good agreement with the corresponding FE model deflection results, validating FE model of operation (reverse curve, -40 ℃).

AB - The aim of this study is to examine railway brake tubes subjected to bending due to operation on a railroad reverse curve with extremely low curve radius in case of critical load cases at -40 ℃ simulation has been performed in order to determine the input prescribed displacements of the FE simulation. Then, FE model is presented for the critical positions, without and with internal pressure. Stress and strain states have been analysed. Finally, a standard deflection test has been carried out along with the FE model of the deflection test based on the material model of the FE model of bending for experimental validation. Tsai-Hill failure indices are lower than 1 and equivalent stresses in rubber liners are lower than tensile strength of rubber for all load cases, so material failure is not imminent regarding such extreme operating conditions. With internal pressure applied, maximum failure indices tend to be lower. The deflection test results are in good agreement with the corresponding FE model deflection results, validating FE model of operation (reverse curve, -40 ℃).

KW - Bending

KW - Cold environment

KW - Cord-rubber tube

KW - FE model

KW - Filament-wound composite tube

KW - Railway brake tube

KW - Reverse curve

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