Optimum Design of Stiffened Shear Webs with Supplementary Skin Stabilisation.

摘要

This report documents the result of an investigation of the optimum design of shear web structures whose function is to resist buckling. The structure considered was comprised of a simply supported thin metal web of constant depth, but infinite length, stabilized at uniform intervals by vertical stiffeners. The analysis was based on that of Stein and Fralich, and Cook and Rockey, and takes proper account of individual stiffener action in the buckling process and uses a realistic buckling mode between stiffeners. Results indicated that structural weight decreases continuously as stiffener spacing was reduced until an absolute minimum was achieved at a spacing well below practical limits. Computer routines based on the analysis have been written.