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Probability of rail break caused by out-of-round wheel loads

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Titel: Probability of rail break caused by out-of-round wheel loads
Autoren: Nielsen, Jens, 1963, Ekberg, Anders, 1967
Quelle: Driving research and innovation to push Europe's rail system forward (IN2TRACK3) In2Track-2 (CHARMEC EU19) Engineering Structures. 294
Schlagwörter: Subset simulation algorithm, Poly -harmonic spline, Wheel -rail impact, Dynamic vehicle -track interaction, Linear elastic fracture mechanics, Out -of -round wheel, Rail break probability
Beschreibung: A simulation procedure to predict the probability of rail break due to a measured wheel load spectrum is presented. The load distribution includes a representative proportion of high-magnitude dynamic loads generated by out-of-round wheels. Linear elastic fracture mechanics is applied to determine the stress intensities of preexisting rail head cracks in a continuously welded rail subjected to combined bending and temperature loading. Rail bending moments are evaluated using a validated time-domain model of dynamic vehicle-track interaction. The considered multi-dimensional stochastic parameter space includes field test data of dynamic loads from a wheel impact load detector and crack depths from eddy current data. Meta-models based on polyharmonic splines are applied to reduce the computational cost of the analysis. Supported by the extensive field test data, the simulation procedure is demonstrated by investigating the influences of freight traffic type, track support stiffness and rail temperature on the probability of a rail break initiated at a pre-existing rail head crack.
Dateibeschreibung: electronic
Zugangs-URL: https://research.chalmers.se/publication/537487
https://research.chalmers.se/publication/537487/file/537487_Fulltext.pdf
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  Data: Probability of rail break caused by out-of-round wheel loads
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  Data: <searchLink fieldCode="AR" term="%22Nielsen%2C+Jens%22">Nielsen, Jens</searchLink>, 1963<br /><searchLink fieldCode="AR" term="%22Ekberg%2C+Anders%22">Ekberg, Anders</searchLink>, 1967
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  Data: <i>Driving research and innovation to push Europe's rail system forward (IN2TRACK3) In2Track-2 (CHARMEC EU19) Engineering Structures</i>. 294
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  Data: <searchLink fieldCode="DE" term="%22Subset+simulation+algorithm%22">Subset simulation algorithm</searchLink><br /><searchLink fieldCode="DE" term="%22Poly+-harmonic+spline%22">Poly -harmonic spline</searchLink><br /><searchLink fieldCode="DE" term="%22Wheel+-rail+impact%22">Wheel -rail impact</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+vehicle+-track+interaction%22">Dynamic vehicle -track interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Linear+elastic+fracture+mechanics%22">Linear elastic fracture mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Out+-of+-round+wheel%22">Out -of -round wheel</searchLink><br /><searchLink fieldCode="DE" term="%22Rail+break+probability%22">Rail break probability</searchLink>
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  Label: Description
  Group: Ab
  Data: A simulation procedure to predict the probability of rail break due to a measured wheel load spectrum is presented. The load distribution includes a representative proportion of high-magnitude dynamic loads generated by out-of-round wheels. Linear elastic fracture mechanics is applied to determine the stress intensities of preexisting rail head cracks in a continuously welded rail subjected to combined bending and temperature loading. Rail bending moments are evaluated using a validated time-domain model of dynamic vehicle-track interaction. The considered multi-dimensional stochastic parameter space includes field test data of dynamic loads from a wheel impact load detector and crack depths from eddy current data. Meta-models based on polyharmonic splines are applied to reduce the computational cost of the analysis. Supported by the extensive field test data, the simulation procedure is demonstrated by investigating the influences of freight traffic type, track support stiffness and rail temperature on the probability of a rail break initiated at a pre-existing rail head crack.
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.engstruct.2023.116717
    Languages:
      – Text: English
    Subjects:
      – SubjectFull: Subset simulation algorithm
        Type: general
      – SubjectFull: Poly -harmonic spline
        Type: general
      – SubjectFull: Wheel -rail impact
        Type: general
      – SubjectFull: Dynamic vehicle -track interaction
        Type: general
      – SubjectFull: Linear elastic fracture mechanics
        Type: general
      – SubjectFull: Out -of -round wheel
        Type: general
      – SubjectFull: Rail break probability
        Type: general
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      – TitleFull: Probability of rail break caused by out-of-round wheel loads
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          Name:
            NameFull: Nielsen, Jens
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            NameFull: Ekberg, Anders
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            – D: 01
              M: 01
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              Y: 2023
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              Value: 294
          Titles:
            – TitleFull: Driving research and innovation to push Europe's rail system forward (IN2TRACK3) In2Track-2 (CHARMEC EU19) Engineering Structures
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