Pipe and Tube Welds
Tags: Welded Stress and Strain
Axial Force on CJP ButtWeld formula
| \(\large{ \sigma = \frac{ P }{ A } }\) | |
| \(\large{ \sigma = \frac{ 4 \; P }{ \pi \; \left( D^2 \;-\; d^2 \right) } }\) | |
| \(\large{ d = D \;-\; 2 \; t }\) |
Where:
\(\large{ \sigma }\) (Greek symbol sigma) = stress in weld
\(\large{ \pi }\) = Pi
\(\large{ d }\) = pipe/tube inside diameter
\(\large{ D }\) = pipe/tube outside diameter
\(\large{ P }\) = total axial force
\(\large{ A }\) = weld throat area
\(\large{ t }\) = weld throat thickness
Shear Force on CJP ButtWeld formula
| \(\large{ \tau = \tau_p = \frac{ V }{ A } }\) | |
| \(\large{ \tau = \tau_p = \frac{ 4 \; V }{ \pi \; \left( D^2 \;-\; d^2 \right) } }\) | |
| \(\large{ d = D \;-\; 2 \; t }\) |
Where:
\(\large{ \tau }\) (Greak symbol tau) = shear stress
\(\large{ \tau_p }\) (Greak symbol tau) = shear stress parallel to weld direction
\(\large{ \pi }\) = Pi
\(\large{ d }\) = pipe/tube inside diameter
\(\large{ D }\) = pipe/tube outside diameter
\(\large{ V }\) = total shear force
\(\large{ A }\) = weld throat area
\(\large{ t }\) = weld throat thickness
Bending Moment on CJP ButtWeld formula
| \(\large{ \sigma = \frac{ M }{ E } }\) | |
| \(\large{ \sigma = \frac{ 32 \; M }{ \pi \; D^3 \; \left[ 1 \;-\; \left( \frac{ d }{ D } \right)^4 \right] } }\) | |
| \(\large{ d = D \;-\; 2 \; t }\) |
Where:
\(\large{ \sigma }\) (Greek symbol sigma) = stress in weld
\(\large{ \pi }\) = Pi
\(\large{ d }\) = pipe/tube inside diameter
\(\large{ D }\) = pipe/tube outside diameter
\(\large{ M }\) = bending moment
\(\large{ E }\) = modulus of weld section
\(\large{ t }\) = weld throat thickness
Torsion Moment on CJP ButtWeld formula
| \(\large{ \tau_p = \frac{ T }{ E } }\) | |
| \(\large{ \tau_p = \frac{ 16 \; T }{ \pi \; D^3 \; \left[ 1 \;-\; \left( \frac{ d }{ D } \right)^4 \right] } }\) | |
| \(\large{ d = D \;-\; 2 \; t }\) |
Where:
\(\large{ \tau_p }\) (Greak symbol tau) = shear stress parallel to weld direction
\(\large{ \pi }\) = Pi
\(\large{ d }\) = pipe/tube inside diameter
\(\large{ D }\) = pipe/tube outside diameter
\(\large{ T }\) = torque force
\(\large{ E }\) = modulus of weld section
\(\large{ t }\) = weld throat thickness
Tags: Welded Stress and Strain