Defining the Plastic Limit Moment for Shell Intersections Based on a New Criterion
Publication: Journal of Engineering Mechanics
Volume 140, Issue 8
Abstract
In this research, a new method and numerical procedure for determining the plastic limit load in shell intersections using elastic-plastic finite-element analysis are presented. The proposed method is based on the maximum criterion of the rate of the change of the relative plastic work. For experimental models of cylindrical vessels with radial nozzles under in-plane moment, the results of comparisons with the twice elastic slope method were considered for determining the plastic limit moment. A parametric study of the nonradial cylindrical shell intersections subjected to in-plane moment on the nozzle was performed to examine the influence of an angular parameter on the plastic limit moment on the basis of the proposed criterion.
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Acknowledgments
This study was supported by the Ministry of Education and Science of the Russian Federation.
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© 2014 American Society of Civil Engineers.
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Received: Apr 26, 2013
Accepted: Dec 17, 2013
Published online: Feb 7, 2014
Discussion open until: Jul 7, 2014
Published in print: Aug 1, 2014
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