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Experimental and numerical analysis of bolt-loaded open-hole laminates reinforced by winded carbon rovings

Botzkowski, Tim and Galkin, Siegfried and Wagner, Sebastian and Sikora, Sebastian P. and Kärger, Luise (2016) Experimental and numerical analysis of bolt-loaded open-hole laminates reinforced by winded carbon rovings. Composite Structures, 141, pp. 194-202. Elsevier. ISSN 0263-8223

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Official URL: http://www.elsevier.com/locate/compstruct

Abstract

Quasistatic and oscillating forces transferred into carbon composite parts by bolts are limited by poor bearing stresses. There are various approaches to reinforce open holes, for example by the use of integrated metal sheets or by complexly stitched rovings. In the present paper, the influence of a winded roving applied to a bolt-loaded open-hole laminate is investigated in terms of the structural responses. As basis of this research, a non-reinforced open-hole laminate as well as single winded carbon loops are regarded as reference samples. Both reference-laminate and reference single-loops are tested experimentally under bolt-loading to obtain load–displacement results, which are used to set simulation Parameters and to validate corresponding finite element (FE) models. For numerical investigation, threedimensional finite volume element models are generated to describe the carbon loops considering cross sections as well as ondulations of the fibre rovings. The influence of manufacturing effects on the roving’s cross sections is considered and assessed. Based on these findings, an idealised model of the multi-loop reinforced open-hole laminate is set up. Subsequently, the accuracy of this analysis method is validated by experimental tests of a laminate reinforced by three loops.

Item URL in elib:https://elib.dlr.de/103203/
Document Type:Article
Title:Experimental and numerical analysis of bolt-loaded open-hole laminates reinforced by winded carbon rovings
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Botzkowski, TimKITUNSPECIFIED
Galkin, SiegfriedKITUNSPECIFIED
Wagner, SebastianNMIUNSPECIFIED
Sikora, Sebastian P.sebastian.sikora (at) dlr.deUNSPECIFIED
Kärger, LuiseKITUNSPECIFIED
Date:2016
Journal or Publication Title:Composite Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:141
Page Range:pp. 194-202
Editors:
EditorsEmail
Ferreira, A.J.M.UNSPECIFIED
Publisher:Elsevier
ISSN:0263-8223
Status:Published
Keywords:bolted joints, Tailored Fibre Placement (TFP), winded carbon reinforcement, manufacturing effects, structural simulation, bearing load
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugstruktur (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Lightweight and Hybrid Design Methods
Institute of Vehicle Concepts
Deposited By: Sikora, Sebastian
Deposited On:12 Jul 2016 13:12
Last Modified:10 Jan 2019 15:46

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