Failure analysis of composite multi-stringer panels using simplified models

The postbuckling response and failure of multi-stringer panels is analyzed using finite element models with three levels of approximation. The first model is based on a relatively coarse mesh to capture the global postbuckling response of a multi-stringer panel. The second model can predict the nonlinear response as well as the debonding and crippling failure mechanisms in a Single Stringer Compression Specimen (SSCS). The third model consists...