Membrane Elements for Polygonal Cylindrical Reinforced by Rings and Stiffeners

摘要

The report is concerned with the development of membrane elements for cylindrical, fuselage-type structures. The proposed models include the out of plane bending modes of the reinforcing rings, an important feature in some applications to real situations. The performance of model 4 is tested on a circular cantilevered cylinder, loaded by a radial concentrated force on the end ring. Deflections and stresses are compared with previous analyses and test results. The conclusions are that, while good deflections are already obtained with simple models, more elaborate models are required to avoid stress output interpretations. Model 5 is satisfactory from this point of view. (Author)