Burst strength evaluation of the FW-CFRP hybrid composite pipes considering plastic deformation of the liner

In the present study, elasto-plastic analysis on the filament-wound carbon fiber-reinforced plastic (FW-CFRP) hybrid composite pipes subjected to internal pressure was proposed. The analysis is based on the Hencky relation and Ludwick’s strain-hardening function. In order to evaluate the availability, the distributions of stress and strain based on the present analysis and finite element method were compared. Burst strength of the FW-CFRP hybrid composite pipes and residual strength after impact were predicted based on the maximum strain criterion. The analytical predictions are in good agreement with the experimental results.