SCF equations in multi-planar welded tubular DT-joints including bending effects

Karamanos, Spyros A.; Romeijn, A.; Wardenier, J.

doi:10.1016/s0951-8339(01)00020-x

Cited by 50 publications

(14 citation statements)

References 3 publications

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“…Karamos, et al [10] derived the SCF formula and investegated stress distribution along intersection line on the multiplanar DTjoint due to the bending load. Research was also undertaken by Wingerde, et al [11] formulating the SCF formula for uniplanar tubular joints K and multiplanar KK.…”

Section: Literatures Reviewmentioning

confidence: 99%

Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures

Walujo¹,

Setyo²,

Fasyin³

2018

MATEC Web Conf.

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Abstract. The purpose of this study is to investigate the proper Stress Concentration Factor (SCF) of a 60° two-planar DKT tubular joint of a tripod wellhead offshore structure. So far, calculation of SCF for a multiplane tubular joint was based on the formulation for the simple/uniplanar tubular joints that yield in over/under prediction of the SCF of the joint. This situation in turn decreasing the accuracy of fatigue life prediction of the structures. The SCF is one of the most important parameters in the tubular joint fatigue analysis. The tubular joint is modelled as finite element models with bending loads acting on the braces that cover a wide range of dimensionless geometrical parameters (β, τ, ). The effect of such parameters on the SCF distribution along the weld toe of braces and chord on the joint are investigated. Validation of the finite element model has shown good agreement to the global structural analysis results. The results of parametric studies show that the peak SCF mostly occurs at around crown 2 point of the outer central brace. The increase of the β leads to decrease the SCF. While the increase of the τ and γ leads to increase the SCF. The effect of parameter β and γ on the SCF are greater than the effect of parameter τ.

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Section: Literatures Reviewmentioning

confidence: 99%

Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures

Walujo¹,

Setyo²,

Fasyin³

2018

MATEC Web Conf.

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show abstract

“…For multi-planar joints, the reader is referred to [28,29] (for the SCF calculation in XX-joints), [30] (for the SCF determination in KK-joints), [31] (for the study of SCFs in DT-joints), and [32][33][34][35] (for the comprehensive investigation of SCFs in two-and threeplanar tubular KT-joints), among others.…”

Section: Stress Concentration Factors In Unstiffened Tubular Jointsmentioning

confidence: 99%

Probability density functions of SCFs in internally ring-stiffened tubular KT-joints of offshore structures subjected to axial loading

Ahmadi

Mohammadi

Yeganeh

2015

Thin-Walled Structures

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“…The aim of this study was to simplify the equations for design purposes. Karamanos et al [26] proposed SCF equations in multi-planar welded tubular DT-joints including bending effects. Special attention was focused on the location where critical stress concentration occurs, as well as on the so-called ''carry-over phenomenon'' and its implications on the hot-spot stress value.…”

Section: Literature Reviewmentioning

confidence: 99%

Geometrical effect on SCF distribution in uni-planar tubular DKT-joints under axial loads

Ahmadi

Lotfollahi-Yaghin

Aminfar

2011

Journal of Constructional Steel Research

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SCF equations in multi-planar welded tubular DT-joints including bending effects

Cited by 50 publications

References 3 publications

Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures

Stress Concentration Factor of A Two-Planar Double KT Tubular Joint due to In-Plane Bending Loading in Steel Offshore Structures

Probability density functions of SCFs in internally ring-stiffened tubular KT-joints of offshore structures subjected to axial loading

Geometrical effect on SCF distribution in uni-planar tubular DKT-joints under axial loads

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