Publication result detail

Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle

NÁHLÍK, L.; POKORNÝ, P.; ŠEVČÍK, M.; HUTAŘ, P.

Original Title

Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle

English Title

Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle

Type

WoS Article

Original Abstract

Railway axles are subjected to cyclic loading which can lead to fatigue failure. For safe operation of railway axles a damage tolerance approach taking into account a possible defect on railway axle surface is often required. The contribution deals with an estimation of residual fatigue lifetime of railway axle with initial inclined surface crack. 3D numerical model of inclined semi-elliptical surface crack in railway axle was developed and its curved propagation through the axle was simulated by finite element method. Presence of press-fitted wheel in the vicinity of initial crack was taken into account. A typical loading spectrum of railway axle was considered and residual fatigue lifetime was estimated by NASGRO approach. Material properties of typical axle steel EA4T were considered in numerical calculations and lifetime estimation.

English abstract

Railway axles are subjected to cyclic loading which can lead to fatigue failure. For safe operation of railway axles a damage tolerance approach taking into account a possible defect on railway axle surface is often required. The contribution deals with an estimation of residual fatigue lifetime of railway axle with initial inclined surface crack. 3D numerical model of inclined semi-elliptical surface crack in railway axle was developed and its curved propagation through the axle was simulated by finite element method. Presence of press-fitted wheel in the vicinity of initial crack was taken into account. A typical loading spectrum of railway axle was considered and residual fatigue lifetime was estimated by NASGRO approach. Material properties of typical axle steel EA4T were considered in numerical calculations and lifetime estimation.

Keywords

Inclined crack; railway axle; residual fatigue lifetime; fatigue crack propagation

Key words in English

Inclined crack; railway axle; residual fatigue lifetime; fatigue crack propagation

Authors

NÁHLÍK, L.; POKORNÝ, P.; ŠEVČÍK, M.; HUTAŘ, P.

RIV year

2021

Released

01.01.2017

Publisher

WORLD SCIENTIFIC PUBL CO PTE LTD

Location

SINGAPORE

ISBN

1756-9737

Periodical

Journal of Multiscale Modelling

Volume

7

Number

4

State

Republic of Singapore

Pages from

1

Pages to

6

Pages count

6

URL

https://www.worldscientific.com/doi/abs/10.1142/S1756973716400072

BibTex

@article{BUT170579,
  author="Luboš {Náhlík} and Pavel {Pokorný} and Martin {Ševčík} and Pavel {Hutař}",
  title="Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle",
  journal="Journal of Multiscale Modelling",
  year="2017",
  volume="7",
  number="4",
  pages="1--6",
  doi="10.1142/S1756973716400072",
  issn="1756-9737",
  url="https://www.worldscientific.com/doi/abs/10.1142/S1756973716400072"
}