Bilinear approximations to the mode II delamination cohesive law using an inverse method

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Dourado, N (Author) Other; de Moura, MFSF (Author) FEUP; de Morais, AB (Author) Other; Pereira, AB (Author) Other

Journal

Title: Mechanics of Materials

Vol. 49

Pages: 42-50

ISSN: 0167-6636

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 16 Citations

ISI Web of Science

Scopus - 26 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-002-9TK

DOI: 10.1016/j.mechmat.2012.02.004

Abstract (EN): Cohesive zone modelling has proved to be a powerful tool to model delamination problems in high performance composites. Application to mode II delamination is of particular interest due to the large fracture process zone. In this paper, bilinear approximations to the mode II delamination cohesive law were determined for two carbon/epoxy composites. This was achieved by an inverse method that consisted of making Finite Element Analyses fit experimental load-displacement curves measured in well-known End-Notched Flexure tests. The optimal parameters of the bilinear cohesive law were determined by a genetic algorithm. The results showed the adequacy of the bilinear cohesive law and of the methodology employed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9