Abstract
The paper investigates the influence of rubber elastic properties on modal behaviour of truck tyres. Hyperelastic models and numerical values of coefficients in these models used for defining rubber hyperelastic behaviour are presented. The choice of the appropriate hyperelastic model to be introduced in the tyre finite element model is motivated. The main characteristics of the finite element model of a radial truck tyre are presented. A series of modal analyses is performed, in which elastic properties of tread rubber are modified in a wide range. Finally, the influence of tread rubber elasticity characteristic values on natural frequencies and mode shapes of truck tyres is analysed. Keywords: tyre, hyperelasticity, modal behaviour, finite element model