چكيده لاتين :
This paper addresses the finite element modelling of a steel belted radial tyre under static contact load using ABAQUS code. The model combines the 3D parts of the complex tread patterns and the quasi axisymmetric part of the tyre in which the tread blocks are not included. These two sections were meshed separately and linked together using a tying algorithm implemented in the code. The fibber reinforced parts of the tyre including ply, belts, and cap ply were modelled using rebar layer embedded in the surface elements. A hyperelastic material model was used in conjunction with a linear elastic one to describe the stress-strain behaviour of rubber and reinforcing fibres, respectively. The developed model was used to simulate the 175/70R14 steel-belted radial tyre subjected to inflation and contact loads. Three belts angles were selected to examine the effect of belt angle variations on the mechanical behaviour of the tyre. In addition, the results were also compared with a similar tyre model in which a simply ribbed tread was used instead of complex tread pattern. The friction between tread surface and contact road surface was simulated using the Coulombיs friction law. The numerical results and also the comparison of experimentally measured tyre deflection under concentrated vertical load revealed that neglecting the details of the tread blocks has very minor effect on the predicted tyre deformation. However, differences can be large enough when considering secondary or higher variables such as contact pressure, stress, and strain energies. It is also shown that a belt angle of 20° is the best comprised value among the selected design parameters.
