New parametric equations for stress concentration factors in tubular K-joints under balanced axial loading

1997 ◽  
Vol 19 (4) ◽  
pp. 309-317 ◽  
Author(s):  
M Morgan
Keyword(s):  
Stress Concentration ◽  
Axial Loading ◽  
Concentration Factors ◽  
Stress Concentration Factors

Stress concentration factors in square and circular cross-sectioned bars with axial slots

2003 ◽  
Vol 38 (3) ◽  
pp. 247-258 ◽  
Author(s):  
T H Hyde ◽  
G Notarangelo ◽  
C Pappalettere ◽  
W Sun
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Axial Loading ◽  
Careful Consideration ◽  
Nominal Stress ◽  
Fe Method ◽  
Concentration Factors ◽  
Stress Concentration Factors

The stress concentration factors (SCFs) in the region of a slot, with semicircular ends, in square and circular cross-sectioned bars have been obtained using the finite element (FE) method. Results are presented for torsion, bending (in two different directions) and axial loading. The effects of the length and width of the slot on the magnitudes and positions of the SCFs were investigated; the overall dimensions of the bars were kept constant. The choice of appropriate nominal stresses for defining the SCFs was given careful consideration. The choice of nominal stress for the torsion case is shown to be of particular importance. The SCFs due to torsion are found to be higher than those due to bending and axial loading. Also, except for short slots, the SCFs due to axial loading are lower than the SCFs caused by the most severe bending case.

Stress concentration factors of circular chord and square braces K-joints under axial loading

2017 ◽  
Vol 113 ◽  
pp. 287-298 ◽  
Author(s):  
Yu Chen ◽  
Jun Wan ◽  
Kang Hu ◽  
Jian Yang ◽  
Xixiang Chen
Keyword(s):  
Stress Concentration ◽  
Axial Loading ◽  
Concentration Factors ◽  
Stress Concentration Factors

scholarly journals SCFs study of tubular T/Y steel joints under inplane loading

2019 ◽  
Vol 252 ◽  
pp. 06010
Author(s):  
Lalitesh Kumar ◽  
Ajay Kumar ◽  
Danuta Barnat-Hunek ◽  
Elżbieta Szczygielska ◽  
Monika Garbacz
Keyword(s):  
Stress Concentration ◽  
Hot Spot ◽  
Axial Loading ◽  
Geometrical Parameters ◽  
Fe Modelling ◽  
Element Analysis ◽  
Hot Spot Stress ◽  
Concentration Factors ◽  
Stress Concentration Factors ◽  
Steel Joints

Stress concentration factors (SCFs) at welded tubular joints are one of the prime factors that affect the fatigue life of a structure. In the present work, finite element analysis (FEA) is used to find the hot spot stress and subsequently the stress concentration factors of Tubular T/Y steel Joints. Static axial tensile loading case is used in the present work. The circular hollow sections (CHS) are considered. The parametric study of the variation in SCF, with the change in joint angle (ϴ) and geometrical parameters such as β, τ, γ for T/Y-Joints subjected to inplane axial loading, is done. The validation of FE modelling technique of present work is done by comparing with the various SCFs equations available in the literature

Fatigue Properties of TCS Stainless Steel Weld Joints in Axial Loading

2010 ◽  
Vol 29-32 ◽  
pp. 664-668
Author(s):  
Wei Li ◽  
Qiang Li ◽  
Ping Wang
Keyword(s):  
Stainless Steel ◽  
Stress Concentration ◽  
Axial Loading ◽  
Element Model ◽  
Butt Joint ◽  
Fatigue Properties ◽  
Mean Values ◽  
Weld Joints ◽  
Concentration Factors ◽  
Stress Concentration Factors

Based on the grouping method and lifting and lowering method, the weld joints of TCS stainless steel such as butt joint and corner joint were experimentally examined to clarify their fatigue properties in axial loading. The probabilistic S-N curves were established from the viewpoint of the survival probability and confidence level, and the stress concentration factors were evaluated by using finite element model. As a result, corresponding to fatigue life of N=2×106, the mean values of fatigue limit for corner joint and butt joint are evaluated to be 162.7MPa and 173.7MPa, respectively. The stress concentration factors for butt joint and corner joint are evaluated to be 1.55 and 2.22, respectively.

scholarly journals Stress Concentration Factors for Multi-planar Tubular Joints Subjected to Axial Loading

2020 ◽  
Vol 213 ◽  
pp. 03014
Author(s):  
Kai Zhou ◽  
Jingjing Zuo ◽  
Wenhua Wang ◽  
Shiliu Bao
Keyword(s):  
Stress Concentration ◽  
Hot Spot ◽  
Axial Loading ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Geometrical Parameters ◽  
Tubular Joints ◽  
Axial Forces ◽  
Concentration Factors ◽  
Stress Concentration Factors

The support structure for an offshore wind turbine is subjected to combined hydrodynamic loads and aerodynamic loads. The tubular joints are the weakest component leading to fatigue failure of the whole structure. Based on the multi-pile foundation structure which is used widely in China, the typical threeplanar tubular Y-joints is selected to study stress concentration factor (SCF). Then, the load types subjected to axial loadings of three-planar tubular Y-joints are determined. The finite element models of three-planar tubular Y-joints are established and used to calculate hot spot stresses. The stress concentration factors along the weld of the three-planar tubular Y-joints under the axial forces are obtained. The effects of geometrical parameters on SCFs are studied.

Stress concentration factors due to axial loading of axisymmetric external projections on hollow tubes

1987 ◽  
Vol 22 (1) ◽  
pp. 1-6 ◽  
Author(s):  
R A Evans ◽  
S J Hardy ◽  
T H Hyde
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Axial Loading ◽  
Published Data ◽  
The Finite Element Method ◽  
Concentration Factors ◽  
Stress Concentration Factors ◽  
Good Agreement ◽  
Element Method

The finite element method has here been used to determine stress concentration factors due to axial loading applied to axisymmetric, external projections on hollow tubes. A range of tube and projection dimensions have been covered by the investigation. There is good agreement between the present results and previously published data. The results are presented in a manner which allows stress concentration factors to be quickly determined, for any shape within the range covered by the investigation.

scholarly journals Stress Concentration Factors for Welded Plate T-Joints Subjected to Tensile, Bending and Shearing Loads

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 546
Author(s):  
Krzysztof L. Molski ◽  
Piotr Tarasiuk
Keyword(s):  
Stress Concentration ◽  
Plate Thickness ◽  
Percentage Error ◽  
Geometrical Parameters ◽  
T Joints ◽  
Loading Mode ◽  
Weld Toe ◽  
Concentration Factors ◽  
Parametric Expression ◽  
Stress Concentration Factors

The paper deals with the problem of stress concentration at the weld toe of a plate T-joint subjected to axial, bending, and shearing loading modes. Theoretical stress concentration factors were obtained from numerical simulations using the finite element method for several thousand geometrical cases, where five of the most important geometrical parameters of the joint were considered to be independent variables. For each loading mode—axial, bending, and shearing—highly accurate closed form parametric expression has been derived with a maximum percentage error lower than 2% with respect to the numerical values. Validity of each approximating formula covers the range of dimensional proportions of welded plate T-joints used in engineering applications. Two limiting cases are also included in the solutions—when the weld toe radius tends to zero and the main plate thickness becomes infinite.

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