STRENGTH ANALYSIS OF COMPOSITE STRUCTURES USING FINITE FRACTURE MECHANICS

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

Camanho, PP (Author) FEUP; Arteiro, A (Author) Other

Conference proceedings International

Title: Proceedings of the 6th International Conference on Mechanics and Materials in Design - M2D2015

Pages: 727-728

6th International Conference on Mechanics and Materials in Design

Ponta Delgada/Azores, 26-30 July 2015

Indexing

ISI Web of Knowledge - 0 Citations

Other information

Authenticus ID: P-00K-MX9

Abstract (EN): A new model based on finite fracture mechanics is proposed to predict the strength of composite laminates in the presence of stress concentrations. Failure and the associated crack extension at the onset of instability are predicted when both stress-based and energy-based criteria are simultaneously satisfied. The material properties required by the model are the ply elastic properties, and the laminate unnotched strength and fracture toughness, which may depend on the crack extension. Using experimental data obtained in quasi-isotropic carbon-epoxy laminates it is concluded that the model predictions are very accurate, resulting in improvements over the traditional strength prediction methods. It also is shown that the proposed finite fracture mechanics model can be used to predict the brittleness of different combinations of materials and geometries.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2