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Hybrid titanium–CFRP laminates for high-performance bolted joints

Camanho, P.P. and Fink, Axel and Obst, A. and Pimenta, S. (2009) Hybrid titanium–CFRP laminates for high-performance bolted joints. Composites Part A: Applied Science and Manufacturing, 40 (12), pp. 1826-1837. Elsevier. doi: 10.1016/j.compositesa.2009.02.010. ISSN 1359-835X.

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Official URL: http://www.sciencedirect.com/science?_ob=PublicationURL&_cdi=5567&_pubType=J&_acct=C000007338&_version=1&_urlVersion=0&_userid=100058&md5=e052beb8c23f44829b458382d05286a5&jchunk=40#40


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.

Item URL in elib:https://elib.dlr.de/68646/
Document Type:Article
Title:Hybrid titanium–CFRP laminates for high-performance bolted joints
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Camanho, P.P.DEMEGI, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalUNSPECIFIED
Obst, A.ESA-ESTEC, European Space Agency, Mechanical Engineering Dept., Keplerlaan 1, NL-2200 AG Noordwijk, The NetherlandsUNSPECIFIED
Pimenta, S.INEGI- Instituto de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalUNSPECIFIED
Date:December 2009
Journal or Publication Title:Composites Part A: Applied Science and Manufacturing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.compositesa.2009.02.010
Page Range:pp. 1826-1837
Keywords:Strength, Finite element analysis, Mechanical testing, Joints/joining
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Ries, Doris
Deposited On:24 Jan 2011 11:30
Last Modified:04 Apr 2013 16:27

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