Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2021

Vydáno

01.01.2017

Nakladatel

WORLD SCIENTIFIC PUBL CO PTE LTD

Místo

SINGAPORE

ISSN

1756-9737

Periodikum

Journal of Multiscale Modelling

Svazek

7

Číslo

4

Stát

Singapurská republika

Strany od

1

Strany do

6

Strany počet

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"
}