An analytical model to predict stress fields around broken fibres and their effect on the longitudinal failure of hybrid composites

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Guerrero, JM (Author) Other; Tavares, RP (Author) Other; Otero, F (Author) Other; Mayugo, JA (Author) Other; Costa, J (Author) Other; Turon, A (Author) Other; Camanho, PP (Author) FEUP

Journal

Title: Composite Structures

Vol. 211

Pages: 564-576

ISSN: 0263-8223

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-00Q-6WE

DOI: 10.1016/j.compstruct.2018.12.044

Abstract (EN): This paper presents an analytical model to predict the stress redistribution around broken fibres in hybrid polymer composites. The model is used under the framework of a progressive failure approach to study the load redistribution around breaks in hybrid composites. The outcomes of the model are validated by comparing it with a spring element model. Moreover, the approach is further used to study the tensile behaviour of different hybrid composites. The results obtained show that the load redistribution around breaks depends on the stiffness ratio between both fibres as well as the matrix behaviour considered and the hybrid volume fraction. Furthermore, the different material parameters have a large effect on the tensile behaviour, with an increase of ductility achieved if the failure process of the two fibres is gradual.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13