Simulation of damage in composites by means of interface models: parameter identification

The problem of parameter identification in interface models, which are here conceived for the simulation of delamination and debonding in composites, is discussed in this paper. An elastic-damage time-dependent model for the interlaminar surfaces of layered composites is first presented and its main features are discussed through an extensive parametric study; this constitutive model can be used to simulate both pure-mode and mixed-mode crack propagation phenomena. An indirect identification procedure is then described: it is based on the use of the extended Kalman filter and on an approximate, simplified computation of the sensitivity of the structural response to model parameters. This identification procedure is used to identify the interface model parameters on the basis of the responses of standard interlaminar fracture tests.

[1]  R. E. Kalman,et al.  A New Approach to Linear Filtering and Prediction Problems , 2002 .

[2]  Shigeru Aoki,et al.  Identification of Gurson's material constants by using Kalman filter , 1997 .

[3]  P. Krysl,et al.  Finite element simulation of ring expansion and fragmentation: The capturing of length and time scales through cohesive models of fracture , 1999 .

[4]  Isaac M Daniel,et al.  Effects of strain rate on delamination fracture toughness of graphite/epoxy , 1985 .

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

[6]  G. Nicolao,et al.  Optimal design of robust predictors for linear discrete-time systems , 1995 .

[7]  John W. Hutchinson,et al.  Models of Interface Separation Accompanied by Plastic Dissipation at Multiple Scales , 1999 .

[8]  Smeared-tip superposition method for cohesive fracture with rate effect and creep , 1994, International Journal of Fracture.

[9]  D. Borst,et al.  A NON-LINEAR FINITE ELEMENT APPROACH FOR THE ANALYSIS OF MODE-I FREE EDGE DELAMINATION IN COMPOSITES , 1993 .

[10]  Laurent Vulliet,et al.  An interface model to describe viscoplastic behavior , 1996 .

[11]  矢川 元基,et al.  Proceedings of the 46th Japan National Congress for Applied Mechanics, 1997 , 1997 .

[12]  Alberto Corigliano,et al.  Modeling and simulation of crack propagation in mixed-modes interlaminar fracture specimens , 1996 .

[13]  R. Frassine,et al.  Viscoelastic effects on the interlaminar fracture behaviour of thermoplastic matrix composites : II. Rate and temperature dependence in unidirectional peek/carbon-fibre laminates , 1996 .

[14]  Alberto Corigliano,et al.  Formulation, identification and use of interface models in the numerical analysis of composite delamination , 1993 .

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

[16]  O. Allix,et al.  Some aspects of interlaminar degradation in composites , 2000 .

[17]  J. Gillespie,et al.  Mechanisms for rate effects on interlaminar fracture toughness of carbon/epoxy and carbon/PEEK composites , 1989 .

[18]  Alberto Corigliano,et al.  Parameter identification of a time-dependent elastic-damage interface model for the simulation of debonding in composites ☆ , 2001 .

[19]  W. S. Johnson.  Delamination and Debonding of Materials , 1985 .

[20]  Alberto Corigliano,et al.  Rate-dependent interface models: formulation and numerical applications , 2001 .

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

[22]  Alberto Corigliano,et al.  Identification of Gurson–Tvergaard material model parameters via Kalman filtering technique. I. Theory , 2000 .