Models based on variational analysis are compared with respect to the elastic properties of cross-ply laminates with transverse cracks. All models use the principle of minimum complementary energy for calculation of the stress state in a laminate element between two cracks, as was the case with the original model by Hashin (1985). The models are based on assumptions of different degree of accuracy, where the most refined model was developed by the present authors. Experimental data for the longitudinal stiffness are compared with predictions for glass fiber/epoxy cross-ply laminates. The agreement between model predictions and data is good provided the initial assumptions of the stress state are sufficiently accurate
Godkänd; 1995; Bibliografisk uppgift: Papers presented at an International Symposium on Advanced Technology for Design and Fabrication of Composite Materials and Structures, organized by Consorzio per la ricerca e l'educazione permanente, held at the Politecnico di Torino; 20090821 (andbra)