A micro-macro mechanistic approach to damage in short-fiber composites is developed in this paper. At the micro-scale, the damage mechanisms such as matrix cracking, fiber/matrix debonding are analyzed to define the associated damage variables. The stiffness reduction law dependent on these variables is then established using micromechanical models and average orientation distributions of fibers and microcracks. The macroscopic response is obtained by means of thermodynamics of continuous media, continuum damage mechanics and a finite element formulation.
Revised: May 4, 2007 |
Published: March 1, 2004
Citation
Nguyen B.N., and M.A. Khaleel. 2004.Prediction of Damage in Randomly Oriented Short-Fibre Composites by means of A Mechanistic Approach. In IUTAM Symposium on Multiscale Modeling and Characterization of Elastic-Inelastic Behavior of Engineering Materials, edited by Ahzi, S, et al. 333-341. Dordrecht:Kluwer Academic Publishers.PNNL-SA-41590.