In this paper two enveloping models were described that can be used in combination with the rigid ring model: an extended basic function model and a linear radial-interradial spring model. Results were presented of the quasi-static validation of the enveloping models for different obstacle shapes and tyres. It was shown that both enveloping models describe the effective road surface in a satisfactory way. In addition, the enveloping models were used in combination with the SWIFT rigid ring model to simulate tyre dynamic responses to several obstacles. Dynamic simulations were compared with measurements for several conditions and it was shown that simulations agree well with measurements. Apparently, the enveloping models are able to give a rather good excitation of the rigid ring model and the concept of using an effective road surface works well. In addition to the investigation of single obstacles, measurements and simulations with combinations of different obstacles in series were performed to simulate more arbitrary, severe uneven, road surfaces. It was shown that the rigid ring model in combination with suitable enveloping models is able to describe the tyre dynamic response on successive obstacle impacts as well. Consequently, the model may be used for simulating the dynamic response of a tyre on measured, arbitrary uneven road surfaces as well. To demonstrate this is the most important recommendation for further research. As far as the enveloping models are concerned, the robustness of the basic function model algorithm must be improved to be able to handle the interaction of many steps and the computational effort of the linear radial-interradial spring model must be reduced. To validate the models, the response of the rigid ring model, including enveloping models, must be compared with measurements carried out on actual road surfaces in a vehicle environment. First validation results were presented, but more validation is necessary. Another recommendation for further research is investigating whether the effective input method could be extended for three-dimensional road surfaces as well.


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    Titel :

    An efficient dynamic ride and handling tyre model for arbitary road unevennesses


    Weitere Titelangaben:

    Ein effizientes dynamisches Reifenmodell für Komfort- und Fahrverhaltenssimulationen auf unebenen Fahrbahnen


    Beteiligte:
    Schmeitz, A. (Autor:in) / Pauwelussen, J.P. (Autor:in)


    Erscheinungsdatum :

    2001


    Format / Umfang :

    27 Seiten, 21 Bilder, 18 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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