STRESS CONCENTRATION FACTOR CALCULATION
DY-BUTT JOINT - PARTIAL PENETRATION
INSTRUCTIONS
1. Choose the notch radius r
Three different notch radius are available. Choose between 0.05mm, 0.30mm and 1.00mm.
2. Choose the sheet thickness t
Note: The allowed sheet thicknesses t depend on the chosen radius. Following t thicknesses are available:
3. Choose the weld seam width to thickness ratio f
Note: The weld seam width to thickness ratio f must be in range of: 0.15 - 15
4. Choose root face to sheet thickness ratio z
Note: The root face to sheet thickness ratio z must be in range of: 0.02 - 0.8
5. Choose flank angle β
Note: The flanke angle β must be in range of: 5°-80°
6. Press button "Calculate SCFs"
Three different notch radius are available. Choose between 0.05mm, 0.30mm and 1.00mm.
2. Choose the sheet thickness t
Note: The allowed sheet thicknesses t depend on the chosen radius. Following t thicknesses are available:
| r | t |
|---|---|
| 0.05 mm: | 0.5 mm - 7.5 mm |
| 0.3 mm: | 3.6 mm - 25.0 mm |
| 1.0 mm: | 10.0 mm - 100.0 mm |
3. Choose the weld seam width to thickness ratio f
Note: The weld seam width to thickness ratio f must be in range of: 0.15 - 15
4. Choose root face to sheet thickness ratio z
Note: The root face to sheet thickness ratio z must be in range of: 0.02 - 0.8
5. Choose flank angle β
Note: The flanke angle β must be in range of: 5°-80°
6. Press button "Calculate SCFs"
FURTHER INFORMATION
Neuronal Network
The following picture shows the Neuronal Network Algorithm used for SCF calculation.
The neuronal network consists of four different layers. Each layor conveys a matrix and a weightening function.
For this neuronal network the tanh is used as weightening function. The entire algorithm is shown in the picture below.
Polynomial Regression Function
The following picture shows the Polynomial Regression Functions used for SCF calculation.
The regression coefficients stored in the table depend on the load case and the geometry.
The left side of the table provides the coefficients for the SCF at the weld toe.
The right side of the table provides the coefficients for the SCF at the weld root.
| Toe |
 |
| Root |
 |
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Parameters
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Input
r [mm]
t [mm]
f
z
β [deg]
|
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Choose an Algorithm
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Stress Concentration Factors (SCF)
SCF AT THE WELD TOE
SCF AT THE WELD ROOT
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