Analysis of filament-wound fiber-reinforced sandwich pipe under combined internal pressure and thermomechanical loading

This is a presentation based on the classical laminated-plate theory of an elastic solution for the thermal stress and strain in a filament-wound fiber-reinforced sandwich pipe subjected to internal pressure and temperature change. The sandwich pipe is created using resin material for the core layer and reinforced materials with an alternate-ply for the skin layers. Considering the complicated material properties of the skin layers reinforced by alternate-ply composites, the thermal stress analysis is based on treating typical sandwich pipes that are three-dimensional, cylindrical, and orthotropic. A computer program was developed to conduct stress and deformation analyses of sandwich pipe with different winding angles. Moreover, an optimum winding angle of the filament-wound fiber-reinforced materials was designed by using a netting approach analysis.