Effects of geometrical parameters on the local joint flexibility (LJF) of three-planar tubular T-joints in offshore structures

Ahmadi, Hamid ORCID: https://orcid.org/0000-0002-6192-6275 and Akhtegan, Mohammad (2022) Effects of geometrical parameters on the local joint flexibility (LJF) of three-planar tubular T-joints in offshore structures. Ships and Offshore Structures, 17 (7). pp. 1604-1615. ISSN 1744-5302


Abstract

In this paper, the results of a parametric study conducted on the local joint flexibility (LJF) of three-planar tubular T-joints are presented and discussed. A set of finite element (FE) analyses were carried out on 81 FE models subjected to two types of axial loading in order to study the effects of geometrical characteristics of three-planar T-joint on the LJF factor (fLJF). Generated FE models were verified against available experimental data and parametric equations. The fLJF values in three-planar and uniplanar T-joints were compared. Results showed that the multi-planarity effect on the LJF is considerable and consequently the application of the equations already available for uniplanar T-joints to calculate the fLJF in three-planar T-joints may result in highly over- or under-predicting results. To tackle this problem, FE results were used to develop a new parametric formula for the prediction of the fLJF in axially loaded three-planar T-joints.


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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 03:39
Last Modified: 09 Aug 2022 05:22
Uncontrolled Keywords: LJF factor, Local joint flexibility, Axial loading, Three-planar tubular T-joint, Jacket structure
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: https://doi.org/10.1080/17445302.2021.1937794
URI: http://eprints.usq.edu.au/id/eprint/50508

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