Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stress concentration factors of multi-planar tubular XT-joints subjected to out-of-plane bending moments
Highlights The SCFs in multi-planar tubular XT-joints under three types of OPB loading were investigated. For the numerical study, a FE model was developed and verified against experimental data. Altogether, 81 FE models were generated to study the geometrical effects on the SCFs. A new set of SCF parametric equations was developed for the OPB-loaded multi-planar XT-joints.
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 multi-planar XT-joints subjected to out-of-plane bending (OPB) moment loading. In the present research, data extracted from the stress analysis of 81 finite element (FE) models, verified using experimental test results, was used to study the effects of geometrical parameters on the chord-side SCFs in multi-planar tubular XT-joints subjected to three types of OPB moment loading. Parametric FE study was followed by a set of the nonlinear regression analyses to develop three new SCF parametric equations for the fatigue analysis and design of OPB-loaded multi-planar XT-joints.
Stress concentration factors of multi-planar tubular XT-joints subjected to out-of-plane bending moments
Highlights The SCFs in multi-planar tubular XT-joints under three types of OPB loading were investigated. For the numerical study, a FE model was developed and verified against experimental data. Altogether, 81 FE models were generated to study the geometrical effects on the SCFs. A new set of SCF parametric equations was developed for the OPB-loaded multi-planar XT-joints.
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 multi-planar XT-joints subjected to out-of-plane bending (OPB) moment loading. In the present research, data extracted from the stress analysis of 81 finite element (FE) models, verified using experimental test results, was used to study the effects of geometrical parameters on the chord-side SCFs in multi-planar tubular XT-joints subjected to three types of OPB moment loading. Parametric FE study was followed by a set of the nonlinear regression analyses to develop three new SCF parametric equations for the fatigue analysis and design of OPB-loaded multi-planar XT-joints.
Stress concentration factors of multi-planar tubular XT-joints subjected to out-of-plane bending moments
Ahmadi, Hamid (Autor:in) / Kouhi, Ahmad (Autor:in)
11.01.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch