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http://dx.doi.org/10.5762/KAIS.2015.16.3.2263

A Study of the Effect of Imperfection on Buckling Strength in Thin Cylindrical Shells under Bending  

Jang, Min-Seo (Department of Civil & Environmental Engineering Korea University)
Park, Jong-Sup (Department of Civil Engineering, Sangmyung University)
Lee, Yun-Woo (Department of Civil & Environmental Engineering Korea University)
Kang, Soung-Yong (Department of Civil & Environmental Engineering Korea University)
Kang, Young-Jong (Department of Civil & Environmental Engineering Korea University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.3, 2015 , pp. 2263-2271 More about this Journal
Abstract
The thin cylindrical shell structure under compression should be checked with buckling stability. Initial imperfection effects on buckling strength has been investigated by many researchers. Even though there have been a number of these studies, more studies of buckling strength with various initial imperfections are still necessary. In Eurocode, there is a design parameter that is applicable only on specific imperfection by section thickness rather than on various initial imperfection. In this study, structural analyses, using geometry and material nonlinear analysis, of cylindrical buckling strength with various initial imperfection were performed and compared with Eurocode design strength and Finite Element Method (FEM) analysis results. Moreover, the modified design parameter, which gives more exact prediction result of buckling strength under bending with initial imperfection, is proposed for various initial imperfections.
Keywords
Bend buckling; Buckling strength; Cylindrical shell buckling; Geometry and material nonlinear analysis; Initial imperfection;
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