Parametric study of a pneumatic tire under inflation using the FEM approach

The influence of some structural parameters of a pneumatic tire on its deformation and stresses under inflation pressure has been analyzed. The 2D axisymmetrical finite element model was applied. Large displacements have been taken into account in the strain-displacement relations. Orthotropy ratio variations appearing in a specific tire cord-rubber composite have been also considered. The following input data have been taken: belt ply width, belt cord angle and longitudinal stiffness of carcass fiber. The tire model was verified using the experimental results. Good correlation was observed between the corresponding displacements.