SCFs in offshore two-planar tubular TT-joints reinforced with internal ring stiffeners

Ahmadi, Hamid ORCID: https://orcid.org/0000-0002-6192-6275 and Imani, Hossein (2022) SCFs in offshore two-planar tubular TT-joints reinforced with internal ring stiffeners. Ocean Systems Engineering, 12 (1). pp. 1-22. ISSN 2093-6702


Abstract

The majority of tubular joints commonly found in offshore jacket structures are multi-planar. 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. However, due to the diversity of joint types and loading conditions, a number of quite important cases still exist that have not been studied thoroughly. Among them are internally ring-stiffened two-planar TT-joints subjected to axial loading. 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 TT-joints reinforced with internal ring stiffeners subjected to two types of axial loading. Parametric FE study was followed by a set of nonlinear regression analyses to develop six new SCF parametric equations for the fatigue analysis and design of axially-loaded two-planar TT-joints reinforced with internal ring stiffeners.


Statistics for USQ ePrint 50520
Statistics for this ePrint Item
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 04:26
Last Modified: 30 Sep 2022 02:13
Uncontrolled Keywords: Fatigue, Internal ring stiffener, Offshore jacket structure, Stress concentration factor (SCF), Two-planar tubular TT-joint
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
Identification Number or DOI: doi:10.12989/ose.2022.12.1.001
URI: http://eprints.usq.edu.au/id/eprint/50520

Actions (login required)

View Item Archive Repository Staff Only