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    Block–Wheel–Rail Temperature Assessments Via Longitudinal Train Dynamics Simulations

    Source: Journal of Computational and Nonlinear Dynamics:;2022:;volume( 017 ):;issue: 011::page 111007
    Author:
    Wu, Qing;Spiryagin, Maksym;Cole, Colin
    DOI: 10.1115/1.4055431
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Two research gaps were identified in block–wheel–rail temperature assessment. First, current studies are not combined with train dynamics, which are better descriptions of the block–wheel–rail working environment. Second, current studies cannot simulate long rail sections. This paper developed a block–wheel–rail temperature assessment model by following the finite element idea. Models were validated by comparing with ansys Finite Element models and measured data. Case studies were carried out by combining the temperature model with a Longitudinal Train Dynamics model. A full-service and an emergency brake simulation were carried out for a 150-wagon heavy haul train on a 5680 m long rail section. The results show that, due to brake force differences at different wagon positions, the maximum block and wheel temperature differences among individual wagons in the full-service brake simulation were 117.01 °C and 117.91 °C, respectively. This highlighted the contribution of introducing train dynamics into block–wheel–rail temperature assessment. Rail temperature increases caused by wheel–rail temperature differences and frictional heating were about 10.60 °C and 2.65 °C, respectively.
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      Block–Wheel–Rail Temperature Assessments Via Longitudinal Train Dynamics Simulations

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4288462
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    contributor authorWu, Qing;Spiryagin, Maksym;Cole, Colin
    date accessioned2022-12-27T23:21:35Z
    date available2022-12-27T23:21:35Z
    date copyright9/16/2022 12:00:00 AM
    date issued2022
    identifier issn1555-1415
    identifier othercnd_017_11_111007.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4288462
    description abstractTwo research gaps were identified in block–wheel–rail temperature assessment. First, current studies are not combined with train dynamics, which are better descriptions of the block–wheel–rail working environment. Second, current studies cannot simulate long rail sections. This paper developed a block–wheel–rail temperature assessment model by following the finite element idea. Models were validated by comparing with ansys Finite Element models and measured data. Case studies were carried out by combining the temperature model with a Longitudinal Train Dynamics model. A full-service and an emergency brake simulation were carried out for a 150-wagon heavy haul train on a 5680 m long rail section. The results show that, due to brake force differences at different wagon positions, the maximum block and wheel temperature differences among individual wagons in the full-service brake simulation were 117.01 °C and 117.91 °C, respectively. This highlighted the contribution of introducing train dynamics into block–wheel–rail temperature assessment. Rail temperature increases caused by wheel–rail temperature differences and frictional heating were about 10.60 °C and 2.65 °C, respectively.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleBlock–Wheel–Rail Temperature Assessments Via Longitudinal Train Dynamics Simulations
    typeJournal Paper
    journal volume17
    journal issue11
    journal titleJournal of Computational and Nonlinear Dynamics
    identifier doi10.1115/1.4055431
    journal fristpage111007
    journal lastpage111007_9
    page9
    treeJournal of Computational and Nonlinear Dynamics:;2022:;volume( 017 ):;issue: 011
    contenttypeFulltext
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