Abstract
In this work, a formex procedure is presented in order to provide a conceptually consistent method of formex formulation in the context of substructure analysis. Grids composed of beams with multiple web openings are treated for which substructuring is well suited. An open web beam can be regarded as an assembly of typical units. Formex formulations are produced for such typical units and for the whole assembly. The concepts of plenices are also employed in order to organise a suitable system for a formex representation of partitioned configurations. Also, a formex function is introduced which makes it possible to generate some distorted configurations from regular patterns. A reader with no familiarity with formex algebra may wish to consult Ref. 2 or Ref. 6 for a brief sketch of formex algebra and Ref. 7 for a quick reference on plenices.
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