How to add beams at the periphery of the plates?
The line elements are generated by converting the edges of a planar element into line elements.
To do this from Main menu go to Node/Element> Create element > Create Converted Line Elements.
1) Select appropriate Material and Section Properties for the Beam or Truss element to be created.
2) Select the plates for which you want beams to be created. Click on Apply.
If elements are to be generated only on the periphery of the region selected check on ‘Create only on Periphery’.