Stress concentration analysis of internally ring-stiffened two-planar tubular KK-joints

Ahmadi, Hamid ORCID: and Alinezhad, Rasoul and Atalo, Adel Alizadeh (2021) Stress concentration analysis of internally ring-stiffened two-planar tubular KK-joints. Ships and Offshore Structures. ISSN 1744-5302


The majority of tubular joints commonly found in offshore jacket structures are multi-planar and investigating the effect of loaded out-of-plane braces on the values of the stress concentration factor (SCF) in offshore tubular joints has been the objective of numerous research works. In the present research, data extracted from the stress analysis of 243 finite element (FE) models, verified against available numerical and experimental data, was used to study the effects of geometrical parameters on the chord-side SCFs in two-planar tubular KK-joints reinforced with internal ring stiffeners subjected to balanced axial loading of braces which is usually the dominant loading type in a KK-joint. Parametric FE study was followed by a set of nonlinear regression analyses to develop three new SCF parametric equations.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 28 Jul 2022 03:43
Last Modified: 01 Aug 2022 04:00
Uncontrolled Keywords: Internal ring stiffener, Two-planar tubular KK-joint, Jacket-type platform, Stress concentration factor (SCF), Fatigue
Fields of Research (2020): 40 ENGINEERING > 4015 Maritime engineering > 401504 Ship and platform structures (incl. maritime hydrodynamics)
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
Socio-Economic Objectives (2020): 17 ENERGY > 1702 Energy exploration > 170203 Oil and gas exploration
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