Meso-macro approach to predict the damage evolution of transverse cracking in laminated composite
Abstract
Transverse cracking is generally the first macrodefect to appear in laminated composites. Although it is generally not catastrophic for the structure, it is the cause of other defects which are more critical. It is therefore important to be able to predict onset and multiplication of the cracking phenomenon. We are going to model this degradation using damage mechanics in order to replace the damaged material by an equivalent homogeneous material. First, a damage variable is defined from the physical dimensions of the defect. Then our purpose is to realize a meso-macro approach of the phenomenon. This allows the ply to be described as a separate entity and any stacking sequence to be analyzed after identification of a small number of parameters by a different way from the other works which consider only cross-plied laminates. Finally, the model is validated by comparison between computation and experiment.
- Publication:
-
ONERA TP
- Pub Date:
- 1992
- Bibcode:
- 1992ONERA....S....R
- Keywords:
-
- Composite Materials;
- Crack Initiation;
- Crack Propagation;
- Laminates;
- Damage Assessment;
- Mechanical Properties;
- Microstructure;
- Ply Orientation;
- Thermodynamics;
- Structural Mechanics