Effective Cross Sections of Asymmetric Rings on Cylindrical Shells
Publication: Journal of Structural Engineering
Volume 124, Issue 9
Abstract
Rings or ringbeams are often used to stiffen cylindrical tanks, silos, towers, and pressure vessels. A ring acts together with the axisymmetric shell to form a composite structure. The structural analysis of such a composite structure under general loadings is usually not simple, and often has to be numerical. Although the membrane stress in a symmetrical ring stiffener under axisymmetric loadings may be calculated from a simple effective ring analysis, no existing simple method is able to predict the bending stresses caused by either eccentric loading (bending moment) or the use of an asymmetric section as a ring stiffener. In this paper, the deformations of a general unsymmetrical ring stiffener are analyzed using linear shell bending theory. A new rational method of determining both the precise membrane and the bending stresses throughout the discrete ring stiffener using effective ring analysis is devised. The new method is suitable for use in a shell design standard.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 124 • Issue 9 • September 1998
Pages: 1074 - 1080
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Sep 1, 1998
Published in print: Sep 1998
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