Hi and thanks for the tip.
I have added the beam elements to existing surfaces using the 'split edge' command in design modeler and then adding a beam. Now when I do the analysis it seems that the shells are not 'interacting' with the bean elements. I have used 'form new part' but how do i make sure that the shell is in fact acting in conjunction with the beam elements that I have bisected the existing surface with?
thanks
John