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Abstract
A finite element model is developed to predict the macro properties like radial, lateral, longitudinal, torsional stiffness and force & moment characteristics in steady state rolling condition for pneumatic tyres. This model combines accuracy together with a substantially reduced computational effort. The cord reinforced rubber sections such as body ply, belt, and cap-strip are modelled with orthotropic composite material properties, and rubber sections are modelled with the hyperelastic material model. In another finite element model cord reinforced rubber sections are represented with rebar layer embedded in hyperelastic rubber material and other sections are same as the previous model. The results from this finite element models are then compared with the experimental results. It is concluded that the results obtained from the finite element model with orthotropic composite material properties give more accurate results with remarkably reduced computational effort than the finite element model with embedded rebar layer in its reinforcement layers.