Abstract
This article presents a new model for the analysis of the matrix cracking in [0n/90m/0n] carbon fiber-reinforced laminates under fatigue. It is based on ideas of continuous damage mechanics (CDM) and of lattice schemes. The model describes nonuniform damage evolution in a heterogeneous matrix. A local fracture criterion in terms of a critical damage level is related to the generation of macroscopic discontinuity (crack nucleation). The latter causes stress redistribution in adjoining cartas. A concept of local stress intensity factors is applied for a simulation of matrix crack growth. The model also accounts for a shielding effect of matrix- cracks and the influence of suffer 0° layers. Information not only on the total number, but also on the coordinate of each matrix crack together with the distribution of stresses and damage can be obtained for any moment of loading history. A general block scheme of the model is presented together with the results of numerical simulation. These results are compared both with the experimental data of other authors and with scaling characteristics (including multifraetality) obtained by the author's treatment of experiments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
