共 45 条
Ultimate Strength of Internal Ring-Reinforced KT Joints Under Brace Axial Compression
被引:0
作者:
Rasul, Adnan
[1
]
Karuppanan, Saravanan
[1
]
Perumal, Veeradasan
[1
]
Ovinis, Mark
[2
]
Iqbal, Mohsin
[1
]
机构:
[1] Univ Teknol PETRONAS, Dept Mech Engn, Perak 32610, Malaysia
[2] Birmingham City Univ, Sch Engn & Built Environm, Birmingham, England
来源:
CIVIL ENGINEERING JOURNAL-TEHRAN
|
2024年
/
10卷
/
05期
关键词:
KT-Joint;
Response Surface Methodology;
Ultimate Strength;
Ring-Stiffeners;
Initial Stiffness;
Optimization;
Finite Element Analysis;
Strength Ratio;
TUBULAR T-JOINTS;
STRESS-CONCENTRATION FACTORS;
COLLAR-PLATE;
STATIC STRENGTH;
OFFSHORE STRUCTURES;
DT-JOINTS;
PREDICTION;
LOADS;
D O I:
暂无
中图分类号:
TU [建筑科学];
学科分类号:
0813 ;
摘要:
Internal ring stiffeners are frequently used to improve the ultimate strength of tubular joints in offshore structures. However, there is a noticeable absence of specific design guidance regarding the assessment of their ultimate strengths in prominent offshore codes and design guides. No equations are available to determine the ultimate strength of internal ringreinforced KT joints. This work developed equations to determine the ultimate strength and the strength ratio of internal ring -reinforced KT joints based on numerical models and parametric studies comprising ring parameters and joint parameters. Specifically, a finite element model and a response surface approach with eight parameters (X,, delta, psi, zeta, theta, tau, gamma, and beta) as inputs and two outputs (ultimate strength and the strength ratio) were evaluated since efficient response surface methodology has been proven to give precise and comprehensive predictions. KT -joint with parameters X,=0.9111, delta=0.2, psi=0.7030, zeta=0.3, theta=45 degrees, tau=0.90, gamma=16.25, and beta=0.6 has the maximum ultimate strength, and the KT -joint with parameters: X,=1, delta=0.2, psi=0.8, zeta=0.5697, theta=45 degrees, tau=0.61, gamma=24, and beta=0.41 has the maximum strength ratio. The KT -joints with the optimized parameters were validated through finite element analysis. The percentage difference was less than 1.7%, indicating the applicability and high accuracy of the response surface methodology.
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页码:1543 / 1560
页数:18
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