Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of geometrical parameters on the degree of bending (DoB) in multi-planar tubular XT-joints of offshore structures subjected to axial loading
Abstract The degree of bending (DoB) characterizes the member through-the-thickness stress distribution which has a profound effect on the fatigue behavior of tubular joints commonly found in steel offshore structures and the determination of DoB values is essential for improving the accuracy of fatigue life estimation. Multi-planar joints are an intrinsic feature of offshore tubular structures and the multi-planarity might have a considerable effect on the DoB values at the brace-to-chord intersection. Nevertheless, for multi-planar joints which cover the majority of practical applications, much fewer investigations have been reported on the DoB due to the complexity and high cost involved. In the present research, data extracted from the stress analysis of 81 finite element (FE) models, verified using available parametric equations, was used to study the effects of geometrical parameters on the DoB values in multi-planar tubular XT-joints subjected to two types of axial loading. Parametric FE study was followed by a set of the nonlinear regression analyses to develop four new DoB parametric equations for the fatigue analysis and design of axially loaded multi-planar XT-joints.
Effects of geometrical parameters on the degree of bending (DoB) in multi-planar tubular XT-joints of offshore structures subjected to axial loading
Abstract The degree of bending (DoB) characterizes the member through-the-thickness stress distribution which has a profound effect on the fatigue behavior of tubular joints commonly found in steel offshore structures and the determination of DoB values is essential for improving the accuracy of fatigue life estimation. Multi-planar joints are an intrinsic feature of offshore tubular structures and the multi-planarity might have a considerable effect on the DoB values at the brace-to-chord intersection. Nevertheless, for multi-planar joints which cover the majority of practical applications, much fewer investigations have been reported on the DoB due to the complexity and high cost involved. In the present research, data extracted from the stress analysis of 81 finite element (FE) models, verified using available parametric equations, was used to study the effects of geometrical parameters on the DoB values in multi-planar tubular XT-joints subjected to two types of axial loading. Parametric FE study was followed by a set of the nonlinear regression analyses to develop four new DoB parametric equations for the fatigue analysis and design of axially loaded multi-planar XT-joints.
Effects of geometrical parameters on the degree of bending (DoB) in multi-planar tubular XT-joints of offshore structures subjected to axial loading
Ahmadi, Hamid (Autor:in) / Chamani, Shadi (Autor:in) / Kouhi, Ahmad (Autor:in)
Applied Ocean Research ; 104
25.09.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| DOAJ | 2015