This paper has reviewed existing models for various types of railway vehicle suspension components, showing the key role that they play in the building of the overall multi-body vehicle model. Considering the increased accuracy of wheel-rail contact models which has been achieved after decades of model refinements, it is likely that future research shall also look at improved models of suspension components to allow for further improvements in the accuracy of rail vehicle models. Although reliable models are now well established for nearly all suspension components in a rail vehicle, the availability of modelling approaches having different levels of complexity, accuracy and ease of use calls for an increased awareness of the implications that choices made at the suspension component modelling level have on the accuracy and trustworthiness of the overall rail vehicle model. Furthermore, no matter how accurate the suspension component model is, it will produce correct results only when fed by an appropriate set of parameter values. Hence, the development of new suspension component models shall be considered together with the definition of appropriate (theoretical and experimental) methods to derive the parameter data for use in the simulations. For most components considered in this paper, the experimental approach based on laboratory tests presently represents the preferred option, but in the future, extended use of refined modelling and simulation techniques can be anticipated to reduce the experimental effort and provide improved theoretical background to the data-definition process. This paper has also recognised the track flexibility model as an essential component of the overall vehicle model. Various track models are available, with different levels of complexity from simple lumped parameter ones to a combination of multi-body and finite elements. The usefulness of each approach depends on the frequency range of interest. Simple track models work well for frequencies up to, at least, 20 Hz, but to extend the frequency range of the analysis, a more detailed track model is needed. Finally, model checking and validation represent key steps of the overall model-building process. To date, no clear specification of a validation process is available in the standards in force: although there is probably a wide consensus on the good practices required to build and verify a railway vehicle model, a formal definition of the model verification process is still lacking, as well as the quantitative definition of the expected matching error of the model with respect to line test measurements, so that model validation remains a matter of subjective assessment. It is expected, however, that the work being performed in the DynoTrain project and in working groups attending to the revision of railway standards will in the future achieve a clearer and more objective definition of the model validation process.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Modelling of suspension components in a rail vehicle dynamics context


    Weitere Titelangaben:

    Modellierung von Federungsteilen im Zusammenhang mit der Eisenbahnfahrzeugdynamik


    Beteiligte:
    Bruni, Stefano (Autor:in) / Vinolas, Jordi (Autor:in) / Berg, Mats (Autor:in) / Polach, Oldrich (Autor:in) / Stichel, Sebastian (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 49 , 5 ; 1021-1072


    Erscheinungsdatum :

    2011


    Format / Umfang :

    52 Seiten, 38 Bilder, 2 Tabellen, 133 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Modelling of suspension components in a rail vehicle dynamics context

    Bruni,S. / Vinolas,J. / Berg,M. et al. | Kraftfahrwesen | 2011


    Modelling of suspension components in a rail vehicle dynamics context

    Bruni, Stefano / Vinolas, Jordi / Berg, Mats et al. | Taylor & Francis Verlag | 2011


    Impact of Suspension Component Modelling on the Accuracy of Rail Vehicle Dynamics Simulation

    Alfi, S. / Bruni, S. / Mazzola, L. | British Library Conference Proceedings | 2008


    Suspension frame and electric suspension rail vehicle

    YANG JING / ZHANG SAI / WANG AIBIN et al. | Europäisches Patentamt | 2023

    Freier Zugriff