Hybrid titanium-CFRP laminates for high-performance bolted joints

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Camanho, PP (Author) FEUP; Fink, A (Author) Other; Obst, A (Author) Other; Pimenta, S (Author) Other

Journal

Title: Composites Part A: Applied Science and Manufacturing

Vol. 40

Pages: 1826-1837

ISSN: 1359-835X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 74 Citations

ISI Web of Science

Scopus - 89 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Engineering > Aerospace engineering

Other information

Authenticus ID: P-003-DSZ

DOI: 10.1016/j.compositesa.2009.02.010

Abstract (EN): This paper presents an experimental and numerical investigation of the mechanical response of bolted joints manufactured using new hybrid composite laminates based on the substitution of CFRP plies with titanium plies. The local hybridization of the material is proposed to increase the efficiency of the bolted joints in CFRP structures. Two modeling strategies, based on non-linear finite element methods, are proposed for the analysis of the bolt-bearing and transition regions of the hybrid laminates. The bolt-bearing region is simulated using a three-dimensional finite element model that predicts ply failure mechanisms, whereas the free-edge of the transition region is simulated using plane stress and cohesive elements. The numerical and experimental results indicate that the use of hybrid composites can drastically increase the strength of CFRP bolted joints and therefore increase the efficiency of this type of connection. In addition, the numerical models proposed are able to predict the failure mechanisms and the strength of hybrid composite laminates with a good accuracy.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12