Tailoring for strength of composite steered-fibre panels with cutouts

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Lopes, CS (Author) Other; Gurdal, Z (Author) Other; Camanho, PP (Author) FEUP

Journal

Title: Composites Part A: Applied Science and Manufacturing

Vol. 41

Pages: 1760-1767

ISSN: 1359-835X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 104 Citations

ISI Web of Science

Scopus - 134 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Engineering > Aerospace engineering

Other information

Authenticus ID: P-003-0D9

DOI: 10.1016/j.compositesa.2010.08.011

Abstract (EN): A large number of composite parts Include cutouts to accommodate windows doors and bolted joints These regions are hot-spots in terms of design because they concentrate stresses hence becoming critical in terms of the structural integrity of the part A traditional approach to the problem of stress concentrations around cutouts is to locally increase the laminate thickness in order to Improve the strength margins Often this practice attracts more loads to the cutout besides increasing part weight A more effective solution is to tailor the panel in-plane stiffness by means of fibre-steered laminates and avoid the stress concentrations altogether The present research demonstrates that It is possible to design and manufacture composite panels whose buckling and first-ply failure responses are insensitive to the existence of a central hole Moreover it is shown that the structural performance of these designs more than doubles that of straight-fibre configurations

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8