A Semi Analytical Method to Predict the Ultimate Strength and Collapse Behaviour of Orthogonally Stiffened Panels

摘要

Understanding the response of a stiffened panel under compressive load is important for an ultimate limit state analysis of a ship structure. Panel load shortening curves are required for determining failure characteristics using a progressive collapse type methodology. This paper presents a semi analytical approach to predict the load shortening behaviour of a stiffened panel under uni axial compressive load. The method takes into account local and overall failure modes including gross panel collapse, interframe collapse and local component buckling. Results demonstrate that the method predicts the effects of gross panel buckling on the pre and post collapse behaviour of the panel. The method compares well to equivalent finite element analyses.