Material modelling in cord-rubber structures

A model of linear, orthotropic cord-rubber composite material is defined in the paper, which enables to make an effective static analysis of complex p neumatic structures. A procedure in which physical nonlinearity and incompr essibility of rubber-like materials are taken into account is introduced in to the existing numerical tool, so far working as a geometrically nonlinear code. An analysis of an axisymmetrical pneumatic tire model, loaded with i nternal pressure, is performed as an example.