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The shear stress due to warping is given by (Ref.[2] 7.4.3.2.3, Ref.[3])
Mxs |
the warping torque (see "Standard diagrams for warping torque, bimoment and the St.Venant torsion") |
wM |
the unit warping |
Cm |
the warping constant |
t |
the element thickness |
The shear stress due to warping is calculated in the critical points (see circles in figure)
For I sections, we have the following :
Starting from the wM diagram, we calculate the value
for the critical points.
The shear stress due to warping is calculated in these critical points (see circles in figures)