I should add that the simulation is in an assembly. The webs are 2 different parts and separate from the truss. I assumed global contact.
It is not possible to display the stress results of solid and beam (truss) components at once.
If you look in the Edit Definition menu of the stress plot, you will see that you can choose for the display of Solid and Shells or the display of Beams.
Reason is that Beam elements are not defined by Von Mises stress, as Solid elements do.
If you define a Displacement plot, it is possible to see the two different element types at once.
Thank you very much! I was able to see the stresses.