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  Volume 1, Number 2, June 2019, pages 167-183
open access

Tire rolling-resistance computation based on material viscoelasticity representation
Hamad S. Aldhufairi and Khamis E. Essa

    Rolling-resistance is growingly driving the focus of many tire research due to its significant impact on the vehicle fuel consumption. The finite element (FE) solution is commonly used as a cost-effective and satisfactory prediction tool compared to the experimental approach. Regardless, the FE choice is still an incomplete work especially in predicting the tire rolling-resistance. This paper investigates the implications of decision between linear (prony) and non-linear (parallel rheological framework (PRF)) viscoelastic models on predicting the tire\'s rolling-resistance, in particular, and mechanical comfort in FE under different vertical loadings and inflation pressures. The investigation involved following a different way, based on the hysteresis energy ratio, to obtain the rolling-resistance. The PRF model illustrated a good agreement with the experiments and the literature in the estimation of rolling-resistance, dissipative energy distribution and mechanical comfort in tire\'s structure while prony model had inconsistent and unreasonably small outcomes indicating its insensitivity to rolling.
Key Words
    tire; rolling resistance; parallel rheological framework; viscoelasticity; finite element analysis; energy loss
Hamad S. Aldhufairi and Khamis E. Essa: Department of Mechanical Engineering, University of Birmingham, Birmingham, B15 2TT, United Kingdom

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