Abstract A high priority in vehicle development is the precise definition of the steering characteristics. One crucial parameter for the design and correct dimensioning of the steering components is the maximum steering wheel moment, which occurs at the static parking maneuver. The static parking maneuver is characterized by zero vehicle velocity with applied brakes, large steering wheel angle along with high camber angles. The main contributions to the steering wheel torque in this maneuver are the tire forces and moments that are caused by the friction between the tire and the road. Next to the friction coefficient between tire and road, these forces depend dominantly on the pressure distribution in the tire contact patch. The current tire models, which are used for simulations in the early development stage, calculate inaccurate pressure distributions in the contact patch that do not correspond with measurements. Consequently, the predicted friction forces are inaccurate and an exact design of the steering components is currently not possible. The main objective of this contribution is the development of a model, which allows calculating the tire contact area and pressuring distribution considering vertical load, inflation pressure, tire properties and high camber angles. To achieve this goal, the present paper provides an analysis of comprehensive measurements of the pressure distribution in the contact patch and an evaluation of its dependency on the most relevant influencing parameters such as wheel load, inflation pressure and camber. These findings are then used to propose a new and more accurate model to calculate the pressure distribution. For this purpose, a new approach is being pursued to describe the tire contact patch by the use of a super ellipse. Furthermore, the calculation of the pressure distribution is developed within this contact area. A regression model is used to identify the model parameter’s sensitivity to the constraints of the parking maneuver.


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    Titel :

    Tire contact patch pressure distribution model for the static parking maneuver


    Beteiligte:
    Weinberger, Mario (Autor:in) / Becker, J. (Autor:in) / Schramm, D. (Autor:in)


    Erscheinungsdatum :

    01.01.2018


    Format / Umfang :

    16 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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