Investigation on stress concentration factor in concrete-filled steel tubular T-joints under out-of-plane bending moment

2017 ◽  
pp. 443-448
Author(s):  
I.A. Musa ◽  
F.R. Mashiri ◽  
X. Zhu
Keyword(s):  
Stress Concentration ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Bending Moment ◽  
T Joints ◽  
Out Of Plane ◽  
Plane Bending

Analysis of Thord Stress Concentration Factors of KKK Shape Square Steel Tube Node

2014 ◽  
Vol 1008-1009 ◽  
pp. 1363-1366
Author(s):  
Shao Jie Tian ◽  
Jin Feng Jiao
Keyword(s):  
Stress Concentration ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Bending Moment ◽  
Steel Tube ◽  
Fatigue Performance ◽  
Width Ratio ◽  
Head Width ◽  
Plane Bending ◽  
Square Steel Tube

The stress concentration factor is one of the important parameters of fatigue performance analysis of node.This article uses the ANSYS software, by which the space KKK chord shape square steel tube node stress concentration factor (SCF) is analyzed. Analyzed under three kinds of load (axial force, in-plane bending moment and out-of-plane bending moment ) ,SCF is influenced by Ƭ (branch, head of thickness ratio), β (branch, head width ratio), γ (director of generous than) of the chord and the effect of the nodes is valued in the design of selection of geometric parameters and the calculation of the fatigue performance

Stress Concentrations in DT/X Square-to-Square and Square-to-Round Tubular Joints

1994 ◽  
Vol 116 (2) ◽  
pp. 49-55 ◽  
Author(s):  
A. K. Soh ◽  
C. K. Soh
Keyword(s):  
Stress Concentration ◽  
Bending Moment ◽  
Bending Moments ◽  
Axial Loads ◽  
Stress Concentrations ◽  
Tubular Joints ◽  
Out Of Plane ◽  
Concentration Factors ◽  
Plane Bending ◽  
Stress Concentration Factors

A parametric stress analysis of DT/X square-to-square and square-to-round tubular joints subjected to axial loads, in-plane, and out-of-plane bending moments has been performed using the finite element technique in order to provide a sound basis for using such sections in the design of complex structures. The results of this analysis are presented as a set of equations expressing the stress concentration factor as a function of the relevant geometric parameters for various loading conditions. A comparison is made between the results obtained for square-to-square and square-to-round tubular joints and those obtained for round-to-round tubular joints by other researchers. In general, the stress concentration factors for square-to-square tubular joints are the highest, followed by those of the corresponding round-to-round joints, with those of the corresponding square-to-round joints the lowest when the joints are subject to axial loads. In the case of in-plane bending moment, the stress concentration factors for square-to-square joints are generally still the highest, but followed by those of the corresponding square-to-round joints, with those of the corresponding round-to-round joints the lowest. However, the stress concentration factors for the three types of joint are comparable when they are subject to out-of-plane bending moments.

The Parametrical Stress Analysis of Tubular T Joints

1985 ◽  
Vol 107 (4) ◽  
pp. 473-478
Author(s):  
T.-Y. Chen ◽  
B.-Z. Chen ◽  
Y.-Q. Wang
Keyword(s):  
Experimental Data ◽  
Stress Concentration ◽  
Stress Analysis ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Axial Loading ◽  
Geometric Parameters ◽  
T Joints ◽  
Data Tables ◽  
The Relationship

The relationship between the geometric parameters of α, β, γ and τ of tubular T joints and chord stress concentration factor, SCF, has been investigated. With the use of calculated values as well as experimental data tables were compiled for a wide variety of cases when axial loading on the branch is applied. Finally, a probability analysis is given as to the reliability of using a particular SCF value.

Probabilistic analysis of stress concentration factors in unstiffened gap tubular KT-joints of jacket structures under the out-of-plane bending moment loads

2016 ◽  
Vol 20 (4) ◽  
pp. 595-615 ◽  
Author(s):  
Hamid Ahmadi ◽  
Mir Amin Mousavi Nezhad Benam
Keyword(s):  
Stress Concentration ◽  
Probability Density ◽  
Bending Moment ◽  
Probability Density Functions ◽  
Density Functions ◽  
Out Of Plane ◽  
Jacket Structures ◽  
Concentration Factors ◽  
Plane Bending ◽  
Stress Concentration Factors

The stress concentration factor, which is one of the primary input parameters for the fatigue reliability analysis of tubular joints commonly found in offshore jacket structures, shows substantial scatter that highlights the importance of accurate derivation of its governing probability function. In this article, results of 144 finite element stress analyses, validated using experimental data, were used to derive the probability density functions for the stress concentration factors in unstiffened gap tubular KT-joints under four types of out-of-plane bending moment loadings. Based on a parametric finite element study, a sample database was prepared for the maximum chord-side stress concentration factors of central and outer braces, and density histograms were generated for these samples. Nine different probability density functions were fitted to these histograms. The maximum likelihood method was used to estimate the parameters of fitted distributions. In each case, Kolmogorov–Smirnov test was applied to assess the goodness-of-fit. Finally, the inverse Gaussian model was selected as the best-fitted distribution, and after substituting the values of estimated parameters, six fully defined probability density functions were proposed for the maximum chord-side stress concentration factors of central and outer braces in unstiffened gap KT-joints under four types of out-of-plane bending loading.

The Research on the Stress Concentration Factor of T-Joints Subjected to Axial Load

2010 ◽  
Vol 163-167 ◽  
pp. 460-464 ◽  
Author(s):  
Jia Zhang ◽  
Shu Ying Qu ◽  
Guo Dong Zhang ◽  
Hao Liu
Keyword(s):  
Finite Element Analysis ◽  
Stress Concentration ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Axial Load ◽  
Geometrical Parameters ◽  
Element Analysis ◽  
T Joints ◽  
The Finite Element Analysis ◽  
Abaqus Software

By terms of the numerical modeling of ABAQUS software, the analysis of the stress concentration factor (SCF) of tubular T-joints subjected to axial load is analyzed in this paper. The magnitude and the distribution of the SCF are also obtained. Through the finite element analysis of 816 models, the effect of geometrical parameters on the value and distribution of the SCF is investigated. Then based on these results, the parametric equations of the maximal SCF and SCF distribution for T-joints subjected to axial load are presented. Error analysis of these parametric equations is also carried out.

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