Calculadora de Resistencia de Soldadura Gratis
Evalúa la resistencia de uniones soldadas según tamaño, longitud y tipo de electrodo. Resultados inmediatos.
Weld Load Capacity
105.2 kN
Weld Load Capacity vs Fillet Weld Leg Size (a)
Fórmula
## Fillet Weld Strength Fillet welds fail through the throat, which is the shortest path through the weld cross-section. ### Key Relationships **Effective throat = 0.707 x leg size** (for equal-leg fillets at 45 degrees) **Capacity = throat x length x allowable shear stress** The 0.707 factor is cos(45 degrees) = sin(45 degrees), representing the minimum cross-section through the triangular fillet.
Ejemplo Resuelto
A 6 mm fillet weld, 200 mm long, with 124 MPa allowable shear (E70 electrode).
- 01Throat = 0.707 x 6 = 4.24 mm
- 02Capacity = 4.24 x 200 x 124 = 105,152 N = 105.2 kN
- 03Strength per mm = 4.24 x 124 / 1000 = 0.526 kN/mm
Preguntas Frecuentes
What is the minimum fillet weld size?
Minimum weld size depends on the thicker plate being joined. For plates up to 6 mm, minimum fillet is 3 mm. For plates 6-13 mm, minimum is 5 mm. For plates over 13 mm, minimum is 6 mm (per AWS D1.1).
Why is the throat thickness less than the leg size?
The weld fails along its weakest plane, which cuts diagonally through the fillet. This diagonal distance (the throat) is shorter than the leg by a factor of cos(45) = 0.707.
Do I need to account for the weld return?
Weld returns (wrapping the weld around corners) add modest capacity and help reduce stress concentrations. Many codes require returns of at least 2 times the weld size at ends of members.
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