DELAMINATION ANALYSIS BY DAMAGE MECHANICS - SOME APPLICATIONS

Delamination is a phenomenon which involves complex degradation of bot h layers and inter-laminar connections. To take into account these deg radations, the composite laminate is modeled at a meso scale as a stac king of homogeneous layers connected by interfaces. Layers and interfa ces may be damaged. Both onset of delamination and its propagation on a short distance are predicted. Two applications are presented, the nu merical simulations are compared with experimental results: (i) delami nation in the vicinity of a straight edge of a specimen under tension or compression, (ii) delamination near the hole of a perforated plate under tension.