Combined finite element and peridynamic analyses for predicting failure in a stiffened composite curved panel with a central slot

This study presents an analysis approach based on a merger of the finite element method and the peridynamic theory. Its validity is established through qualitative and quantitative comparisons against the test results for a stiffened composite curved panel with a central slot under combined internal pressure and axial tension. The predicted initial and final failure loads, as well as the final failure modes, are in close agreement with the experimental observations. This approach demonstrates the capability of the PD approach to assess the durability of complex composite structures.

► Combined finite element method and peridynamic theory is an effective method for damage initiation and growth in composite laminates. ► Simulations predict the splitting failure mode at the final damage state similar to experimental observations. ► Verification involves qualitative and quantitative comparisons against the test results for a stiffened composite curved panel with a central slot.