Comput.Struct. 82, 227--239, 2004
D. Pahr and F.G. Rammerstorfer
Institute of Lightweight Design and Structural Biomechanics,
TU Wien, Vienna, Austria
The paper shows a finite element based multi-scale method for studying problems
related to the mechanical behavior of perforated layered composites.
Unit cell models and hierarchical meso-macro concepts are presented.
Regarding the ``effective first ply failure strength'', both inter- and
intra-laminar failure as well as free edge effects are taken into account on
the meso-level (ply level).
In this way the deformation and strength evaluation of structures containing
perforated laminates can be performed simply on the structural, i.e.
Furthermore this procedure is very efficient because the structural analysis
does not need to account for the perforation explicitly, neither in the finite
element discretization nor in the evaluation of stress fields.