Prediction of stress distribution along the intersection of tubular T-joints by a novel structural stress approach

Liu, Gang; Zhao, Xiao-Ling; Huang, Yi

doi:10.1016/j.ijfatigue.2015.05.021

Cited by 32 publications

(2 citation statements)

References 16 publications

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“…Zavvar [24] for SCF design formulae and multiplanarity in KT-joints. As nonoverlapped tubular joints [2] are easy to fabricate and numerous techniques have been developed for assessing their strength and fatigue performances [4,5,[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], they are widely used in the construction of many tubular structures. However, when the brace-to-chord diameter ratio (β) is bigger than 0.6, nonoverlapped tubular joints may not be easily designed due to the limited range of geometric validity in many design codes [25,26].…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

“…For the past few decades, there have been quite a number of research programs devoted to the study of SCF values and parametric design formulae for various uniplanar tubular joints [3][4][5][6][7][8][9][10][11] and recently for reinforced tubular joints [12][13][14]. On the other hand, as multiplanar tubular joints dominate the practical applications for offshore structures, multiplanarity effects are important in determining the stress distribution at the vicinity of joint intersection.…”

Section: Introductionmentioning

confidence: 99%

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A Bracket‐Stiffened Two‐Planar Overlapped Tubular KT‐Joint for Offshore Jack‐Up Fatigue Analysis

Jian

Yue

Qiu

et al. 2021

Advances in Civil Engineering

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There have been a large number of research programs dedicated to the investigation of stress concentration factor and its parametric design formulae for a variety of uniplanar and multiplanar tubular joints. However, for the multiplanar overlapped tubular joints, the related reports are very limited due to the fact that the combining effect between multiplanarity and brace overlapping is quite complex. In this paper, a novel bracket-stiffened two-planar overlapped tubular KT-joint is proposed by adding two brackets between the upper diagonal and horizontal braces to alleviate the stress concentration at the brace-to-chord intersection area. As compared with the original KT-joint and KT-joint of larger brace gap, stress concentration reduction and fatigue strength enhancement at the most critical point of the proposed KT-joint are significant under both axial and in-plane bending (IPB) loads. The superiority of the proposed KT-joint is further tested with a simplified fatigue life assessment of offshore jack-up in field transit condition, when the KT-joint corresponding to the upper guide level is most critical and fatigue-sensitive. The obtained results with conservative assumptions may serve as guides or references in civil and offshore engineering practices.

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Section: Advances In Civil Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Bracket‐Stiffened Two‐Planar Overlapped Tubular KT‐Joint for Offshore Jack‐Up Fatigue Analysis

Jian

Yue

Qiu

et al. 2021

Advances in Civil Engineering

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Numerical Study of the Effect of the Brace Inclination on the Stress Concentration Factor for Three Different Welded Tubular Y-Joints Subjected to Deflected Bending Load

Chouha,

Jalal,

Maskaoui

et al. 2023

Lecture Notes in Mechanical Engineering

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Analysis of Stress Concentration Factors due to in-Plane Bending and out-of-Plane Bending Loads on Tubular TY-Joints of Offshore Structures

Sambo

Kol

Betchewe

2022

J. Marine. Sci. Appl.

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The aim of this work is to study the stress distributions and the location of hot spots stress in the vicinity of the intersection lines of the tubular elements of the tubular TY-joints. Using the finite element models, we analyze the effects of geometrical parameters on the stress concentration factor in the case of in-plane bending and out-of-plane bending loads, around the weld toe of the tubular joints. Our results reveal the location of the maximum stress concentration factor at the heel or toe in the case of in-plane bending loads and at the saddle point in the case of out-of-plane bending loads. Six parametric equations are established and used to calculate the stress concentration factor at critical locations using the non-linear regression method. The results obtained from the finite element analysis are close to the results of the parametric equations and the experimental data from the previous work.

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Prediction of stress distribution along the intersection of tubular T-joints by a novel structural stress approach

Cited by 32 publications

References 16 publications

A Bracket‐Stiffened Two‐Planar Overlapped Tubular KT‐Joint for Offshore Jack‐Up Fatigue Analysis

A Bracket‐Stiffened Two‐Planar Overlapped Tubular KT‐Joint for Offshore Jack‐Up Fatigue Analysis

Numerical Study of the Effect of the Brace Inclination on the Stress Concentration Factor for Three Different Welded Tubular Y-Joints Subjected to Deflected Bending Load

Analysis of Stress Concentration Factors due to in-Plane Bending and out-of-Plane Bending Loads on Tubular TY-Joints of Offshore Structures

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