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The impact of structural flexibilities of wheelsets and rails on the hunting behaviour of a railway vehicle.

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Title: The impact of structural flexibilities of wheelsets and rails on the hunting behaviour of a railway vehicle.
Authors: Kaiser, Ingo1 ikaiser@nebrija.es, Poll, Gerhard2, Voss, Gerhard2, Vinolas, Jordi1
Source: Vehicle System Dynamics. Apr2019, Vol. 57 Issue 4, p564-594. 31p.
Subjects: Railroad design & construction, Impact (Mechanics), Multibody systems, Wheels, Friction
Abstract: The hunting motion of a passenger coach is investigated using a multibody system in which the wheelsets and the rails can be modelled as flexible bodies. By comparing the results for different model variants, in which the structural flexibilities of the wheelsets and of the rails are either taken into account or neglected, the impact of the flexibilities is analysed. It turns out that the flexibilities of both the wheelsets and the rails have a significant impact on the hunting behaviour by increasing the lateral motions of the wheelsets and lowering the critical speed. In order to investigate the impact of the flexibilities under different operating conditions, the calculations are carried out for track geometries using different rail profiles (60E1, 60E2) and different rail cants (1:40, 1:20) and for different values for the friction coefficient (0.25...0.4) at the wheel-rail contact. The results show that the influence of the flexibilities is the strongest for high lateral forces, which occur e.g. for contact geometries leading to high hunting frequencies and for high values of the friction coefficient. The results also show in some cases a strong impact of the flexibilities on the position of the wheel-rail contact on the running surface of the rail, which is of particular interest with respect to wear simulation. [ABSTRACT FROM AUTHOR]
Copyright of Vehicle System Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: The impact of structural flexibilities of wheelsets and rails on the hunting behaviour of a railway vehicle.
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  Data: <searchLink fieldCode="JN" term="%22Vehicle+System+Dynamics%22">Vehicle System Dynamics</searchLink>. Apr2019, Vol. 57 Issue 4, p564-594. 31p.
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  Data: <searchLink fieldCode="DE" term="%22Railroad+design+%26+construction%22">Railroad design & construction</searchLink><br /><searchLink fieldCode="DE" term="%22Impact+%28Mechanics%29%22">Impact (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Multibody+systems%22">Multibody systems</searchLink><br /><searchLink fieldCode="DE" term="%22Wheels%22">Wheels</searchLink><br /><searchLink fieldCode="DE" term="%22Friction%22">Friction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The hunting motion of a passenger coach is investigated using a multibody system in which the wheelsets and the rails can be modelled as flexible bodies. By comparing the results for different model variants, in which the structural flexibilities of the wheelsets and of the rails are either taken into account or neglected, the impact of the flexibilities is analysed. It turns out that the flexibilities of both the wheelsets and the rails have a significant impact on the hunting behaviour by increasing the lateral motions of the wheelsets and lowering the critical speed. In order to investigate the impact of the flexibilities under different operating conditions, the calculations are carried out for track geometries using different rail profiles (60E1, 60E2) and different rail cants (1:40, 1:20) and for different values for the friction coefficient (0.25...0.4) at the wheel-rail contact. The results show that the influence of the flexibilities is the strongest for high lateral forces, which occur e.g. for contact geometries leading to high hunting frequencies and for high values of the friction coefficient. The results also show in some cases a strong impact of the flexibilities on the position of the wheel-rail contact on the running surface of the rail, which is of particular interest with respect to wear simulation. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Vehicle System Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/00423114.2018.1484933
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 31
        StartPage: 564
    Subjects:
      – SubjectFull: Railroad design & construction
        Type: general
      – SubjectFull: Impact (Mechanics)
        Type: general
      – SubjectFull: Multibody systems
        Type: general
      – SubjectFull: Wheels
        Type: general
      – SubjectFull: Friction
        Type: general
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      – TitleFull: The impact of structural flexibilities of wheelsets and rails on the hunting behaviour of a railway vehicle.
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            NameFull: Kaiser, Ingo
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            NameFull: Poll, Gerhard
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            NameFull: Voss, Gerhard
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            NameFull: Vinolas, Jordi
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            – D: 01
              M: 04
              Text: Apr2019
              Type: published
              Y: 2019
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              Value: 57
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            – TitleFull: Vehicle System Dynamics
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