Erik Kostson
Ansys Employee
we need to set a keyopt under the beam: keyopt,typeids(1),4,2 (add it to the apdl command snippet shown below)
See help manual for this key option that gives both bending and torsion shear stress (by default it is only torsion).

So with that option, we get the results as shown below (with the max in the centre of the section):