Static strength of axially loaded tubular KT-joints at elevated temperatures: Study of geometrical effects and parametric formulation

Dodaran, Neda Azari and Ahmadi, Hamid ORCID: https://orcid.org/0000-0002-6192-6275 and Lotfollahi-Yaghin, Mohammad Ali (2018) Static strength of axially loaded tubular KT-joints at elevated temperatures: Study of geometrical effects and parametric formulation. Marine Structures, 61. pp. 282-308. ISSN 0951-8339


Abstract

This paper aims to study the structural behavior of tubular KT-joints subjected to axial loading at fire induced elevated temperatures. At first, a finite element (FE) model was developed and validated against the data available from experimental tests. Then, a set of 810 FE analyses were performed to study the influence of temperature and dimensionless geometrical parameters (β, γ, θ, and τ) on the ultimate strength and initial stiffness. The joints were analyzed under two types of axial loading and five different temperatures (20 °C, 200 °C, 400 °C, 550 °C, and 700 °C). Up to now, there has not been any design formula available for determining the ultimate strength of KT-joints at elevated temperatures. Hence, after parametric study, a new equation was developed through nonlinear regression analyses, for calculating the ultimate strength of KT-joints subjected to axial loading at elevated temperatures.


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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: 27 Jul 2022 03:51
Last Modified: 03 Aug 2022 03:09
Uncontrolled Keywords: Tubular KT-Joint, Fire condition, Axial loads, Static strength, Parametric formula
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
40 ENGINEERING > 4005 Civil engineering > 400507 Fire safety engineering
Socio-Economic Objectives (2020): 17 ENERGY > 1702 Energy exploration > 170203 Oil and gas exploration
Identification Number or DOI: https://doi.org/10.1016/j.marstruc.2018.06.009
URI: http://eprints.usq.edu.au/id/eprint/50262

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