Local buckling and postbuckling analysis of omega-stringer-stiffened composite panels

The local buckling and postbuckling behaviour of omega-stringer-stiffened composite panels is investigated using novel computational models developed explicitly for different load cases. A Lévy type solution is derived for the local buckling under uniaxial compression and successfully evaluated based on a developed dedicated algorithm. The Ritz method is used to develop a computational model for multiaxial load cases implementing the Lagrange multiplier method and different combinations of supe ...