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Ultimate strength of locally damaged steel stiffened cylinders under axial compression

Lookup NU author(s): Dr Burak Cerik

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Abstract

This paper focuses on the load-carrying behaviour of large diameter thin-walled stiffened cylinders with local damage when subjected to axial compressive loading. The case considered in this study corresponds to the residual strength assessment of columns of floating offshore structures with damage resulting from collisions with supply vessels. Numerical simulations of axial compression tests, which examine the collapse behaviour and the ultimate strength of ring- and orthogonally stiffened cylinders dented by a knife-edged indenter, are presented. The behaviour of eight small-scale ring-stiffened cylinders and four orthogonally stiffened cylinder specimens is analysed. Finite element analyses were performed using the ABAQUS FEA software package, and a close agreement between the experimental test results and the numerical predictions was achieved. To assess the factors influencing the reduction in ultimate strength under axial compression and to clarify the progressive collapse behaviour, further analyses were performed on design examples of ring- and orthogonally stiffened cylinders, considering both intact and damaged conditions.

Publication metadata

Author(s): Cerik BC

Publication type: Article

Publication status: Published

Journal: Thin-Walled Structures

Year: 2015

Volume: 95

Pages: 138-151

Print publication date: 01/10/2015

Online publication date: 14/07/2015

Acceptance date: 04/07/2015

Date deposited: 16/07/2015

ISSN (print): 0263-8231

ISSN (electronic): 1879-3223

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.tws.2015.07.004

DOI: 10.1016/j.tws.2015.07.004

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