A COMPUTATIONAL METHOD FOR DAMAGE INTENSITY PREDICTION IN A LAMINATED COMPOSITE STRUCTURE

The present study describes the basic principles of a general damage computational approach for laminates and demonstrates this approach's prediction capabilities in simulating the complete fracture phenomenon in the case of several tests, both with and without delamination. In this paper, the Damage Mechanics approach is applied in order to solve delamination problems, such as the propagation of an initiated crack, the onset of delamination near edges, and the growth of delamination around holes. For the M55J/M18 carbon/epoxy material, numerical simulations are presented and then compared with experimental results. Pierre Ladevèze, Olivier Allix, Bernard Douchin, and David Lévêque 2

[1]  T. O'Brien.  Characterization of delamination onset and growth in a composite laminate , 1982 .

[2]  A.S.D. Wang,et al.  The Dependence of Transverse Cracking and Delamination on Ply Thickness in Graphite/Epoxy Laminates , 1982 .

[3]  M. Benzeggagh,et al.  Characterizing the Effect of Delamination Defect by Mode I Delamination Test , 1984 .

[4]  O. Allix,et al.  Interlaminar interface modelling for the prediction of delamination , 1992 .

[5]  Pierre Ladevèze,et al.  Damage modelling of the elementary ply for laminated composites , 1992 .

[6]  Pierre Ladevèze,et al.  A damage computational method for composite structures , 1992 .

[7]  P. Robinson,et al.  A Modified DCB Specimen for Mode I Testing of Multidirectional Laminates , 1992 .

[8]  Laurent Daudeville,et al.  A damage mechanics tool for laminate delamination , 1993 .

[9]  F. Yuan,et al.  Transverse Cracking and Stiffness Reduction in Composite Laminates , 1993 .

[10]  Pierre Ladevèze,et al.  Modelling and identification of the mechanical behaviour of composite laminates in compression , 1994 .

[11]  Alberto Corigliano,et al.  Damage analysis of interlaminar fracture specimens , 1995 .

[12]  P. Ladeveze,et al.  A damage computational approach for composites: Basic aspects and micromechanical relations , 1995 .

[13]  O. Allix,et al.  Damage mechanics of interfacial media: Basic aspects, identification and application to delamination , 1996 .

[14]  Pierre Ladevèze,et al.  Identification and validation of an interface damage model for delamination prediction , 1997 .

[15]  O. Allix,et al.  Delayed-Damage Modelling for Fracture Prediction of Laminated Composites under Dynamic Loading , 1997 .

[16]  D. Lévêque.  Analyse de la tenue au délaminage des composites stratifiés : identification d'un modèle d'interface interlaminaire , 1998 .

[17]  Olivier Allix,et al.  Identification and forecast of delamination in composite laminates by an interlaminar interface model , 1998 .

[18]  Pierre Ladevèze,et al.  A computational damage mechanics approach for laminates: Identification and comparison with experimental results , 1998 .