The Buckling of a Thin Sheet Transversely Stiffened

The paper describes a theoretical analysis of the stability of a thin rectangular sheet with transverse ribs, simply supported at all edges, when subjected to compressive end load. The method is the Rayleigh‐Ritz energy method. The results obtained in the previous paper by the same authors, “The buckling of grids of stringers and ribs”, have been freely used. A “buckling equation” has been obtained from which it is possible to calculate the requisite flexural stiffness of the ribs in any case, assuming a value for their torsional rigidity.