NDLI: Bifurcation and collapse analysis of stringer and ring-stringer stiffened cylindrical shells with cutouts

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Bifurcation and collapse analysis of stringer and ring-stringer stiffened cylindrical shells with cutouts

Content Provider	NASA Technical Reports Server (NTRS)
Author	Palazotto, A. N.
Copyright Year	1975
Description	Results for cylindrical configurations using the STAGS computer program were presented. Discontinuities were imposed upon the shell's skin by incorporating symmetrical cutout openings. In addition, the surface is stiffened with both stringer and ring-stringer arrangements. The cutout problem has been shown to be highly nonlinear for smooth surface shells, but it was found that bifurcation and collapse loads are close when one is considering stiffened skin configurations. In order to arrive at this conclusion, it was necessary to evaluate the following: (1) comparison between smeared and discrete stiffener theory for linear solutions, (2) numerical finite difference convergence as directed toward buckling determination, (3) collapse load results with the various skin stiffeners. A linear bifurcation study relating to stiffening effects around cutout areas present within stringer and ring-stringer shell surfaces was included. Comparisons were made between a variety of geometric positions considering cutout frame and thickened skin additions.
File Size	2660368
Page Count	41
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760014499
Archival Resource Key	ark:/13960/t9770893n
Language	English
Publisher Date	1975-01-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Reinforcement Rings Cylindrical Shells Reinforcement Structures Breaking Ports Openings Structural Failure Skin Structural Member Nonlinear Systems Computer Programs Stringers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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