Modeling of fiber-reinforced, pressurised and preformed hoses

In this work, we study the effects of fiber reinforcements on the deformation behavior of hoses under internal pressure. We model helically wound reinforcements in three configurations: a straight hose, a full torus and a quarter torus. For straight hoses, the deformation in both diameter and length is significantly influenced by the wrapping angle of the fibers. Notably, a neutral wrapping angle exists where no deformation occurs under internal pressure. For the full and quarter torus models, the variation of the toroidal helix wrapping angle along the cross-section is taken into account. We discuss the extent to which the type and orientation of the fiber reinforcements affect the Bourdon effect, using the finite element method.