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Probability of instant rail break induced by wheel–rail impact loading using field test data

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Τίτλος: Probability of instant rail break induced by wheel–rail impact loading using field test data
Συγγραφείς: Nielsen, Jens, 1963, Abrahamsson, Thomas, 1956, Ekberg, Anders, 1967
Πηγή: In2Track-2 (CHARMEC EU19) International Journal of Rail Transportation. 10(1):1-23
Θεματικοί όροι: dynamic vehicle–track interaction, rail break probability, thin plate spline, subset simulation algorithm, Wheel–rail impact loads
Περιγραφή: The probability of an instant rail break, initiated at a single pre-existing rail foot crack due to a severe wheel impact loading, is predicted using statistical methods and a time-domain model for the simulation of dynamic vehicle–track interaction. A linear elastic fracture mechanics approach is employed to calculate the stress intensity at the crack in a continuously welded rail subjected to combined bending and temperature loading. Based on long-term field measurements in a wayside wheel load detector, a three-parameter probability distribution of the dynamic wheel load is determined. For a faster numerical assessment of the probability of failure, a thin plate spline regression is implemented to develop a meta-model of the performance function quantifying the stress intensity at the crack. The methodology is demonstrated by investigating the influence of initial crack length, fracture toughness and rail temperature difference on the risk for an instant rail break.
Περιγραφή αρχείου: electronic
Σύνδεσμος πρόσβασης: https://research.chalmers.se/publication/522606
https://research.chalmers.se/publication/522606/file/522606_Fulltext.pdf
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Items – Name: Title
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  Data: Probability of instant rail break induced by wheel–rail impact loading using field test data
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Nielsen%2C+Jens%22">Nielsen, Jens</searchLink>, 1963<br /><searchLink fieldCode="AR" term="%22Abrahamsson%2C+Thomas%22">Abrahamsson, Thomas</searchLink>, 1956<br /><searchLink fieldCode="AR" term="%22Ekberg%2C+Anders%22">Ekberg, Anders</searchLink>, 1967
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  Data: <i>In2Track-2 (CHARMEC EU19) International Journal of Rail Transportation</i>. 10(1):1-23
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  Data: <searchLink fieldCode="DE" term="%22dynamic+vehicle–track+interaction%22">dynamic vehicle–track interaction</searchLink><br /><searchLink fieldCode="DE" term="%22rail+break+probability%22">rail break probability</searchLink><br /><searchLink fieldCode="DE" term="%22thin+plate+spline%22">thin plate spline</searchLink><br /><searchLink fieldCode="DE" term="%22subset+simulation+algorithm%22">subset simulation algorithm</searchLink><br /><searchLink fieldCode="DE" term="%22Wheel–rail+impact+loads%22">Wheel–rail impact loads</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: The probability of an instant rail break, initiated at a single pre-existing rail foot crack due to a severe wheel impact loading, is predicted using statistical methods and a time-domain model for the simulation of dynamic vehicle–track interaction. A linear elastic fracture mechanics approach is employed to calculate the stress intensity at the crack in a continuously welded rail subjected to combined bending and temperature loading. Based on long-term field measurements in a wayside wheel load detector, a three-parameter probability distribution of the dynamic wheel load is determined. For a faster numerical assessment of the probability of failure, a thin plate spline regression is implemented to develop a meta-model of the performance function quantifying the stress intensity at the crack. The methodology is demonstrated by investigating the influence of initial crack length, fracture toughness and rail temperature difference on the risk for an instant rail break.
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        Value: 10.1080/23248378.2021.1874552
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      – SubjectFull: dynamic vehicle–track interaction
        Type: general
      – SubjectFull: rail break probability
        Type: general
      – SubjectFull: thin plate spline
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      – SubjectFull: subset simulation algorithm
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      – SubjectFull: Wheel–rail impact loads
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