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Effects of transient dynamic loading on the energy absorption capability of composite bolted joints undergoing extended bearing failure

Feser, Thomas and Hassan, Jazib and Waimer, Matthias and O'Higgins, Ronan and McCarthy, C. T. and Toso, Nathalie and Voggenreiter, Heinz and McCarthy, M. A. (2020) Effects of transient dynamic loading on the energy absorption capability of composite bolted joints undergoing extended bearing failure. Composite Structures, 247. Elsevier. doi: 10.1016/j.compstruct.2020.112476. ISSN 0263-8223.

Full text not available from this repository.

Official URL: https://doi.org/10.1016/j.compstruct.2020.112476

Abstract

Carbon fibre reinforced polymer (CFRP) materials are widely used in transport aircraft. Crashworthiness requirements demand sufficient energy absorption capacity, especially in the fuselage structure. In a recently-proposed approach, specifically-designed tension absorber joints utilize tension loads for energy absorption via progressive bearing failure. For further development of the concept, experimental tests are performed on pin- joints in quasi-isotropic CFRP material, under transient dynamic loading at 3 m/s. Investigated parameters are laminate thickness, stacking sequence and pin diameter, and the results are evaluated using the performance parameters ultimate bearing strength, mean crush stress and mass-specific energy absorption. A strong relation between the ratio of pin diameter to laminate thickness, D/t, and the performance parameters is found. Compared to previous results for quasi-static loading, the ultimate bearing strength is increased whereas the mean crush stress and mass-specific energy absorption are reduced. Digital image correlation and computed tomography analysis reveals the mechanisms behind the observed trends. The results provide a basis for further optimization of energy-absorbing joints and validation of finite element models.

Item URL in elib:https://elib.dlr.de/135182/
Document Type:Article
Title:Effects of transient dynamic loading on the energy absorption capability of composite bolted joints undergoing extended bearing failure
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Feser, ThomasThomas.Feser (at) dlr.dehttps://orcid.org/0000-0003-4741-5361
Hassan, JazibBernal Institute, School of Engineering, University of LimerickUNSPECIFIED
Waimer, Matthiasmatthias.waimer (at) dlr.deUNSPECIFIED
O'Higgins, RonanBernal Institute, School of Engineering, University of LimerickUNSPECIFIED
McCarthy, C. T.Bernal Institute, School of Engineering, University of LimerickUNSPECIFIED
Toso, NathalieNathalie.Toso (at) dlr.dehttps://orcid.org/0000-0003-2803-1450
Voggenreiter, HeinzDLR Institute of Structures and DesignUNSPECIFIED
McCarthy, M. A.Bernal Institute, School of Engineering, University of LimerickUNSPECIFIED
Date:7 June 2020
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:247
DOI :10.1016/j.compstruct.2020.112476
Publisher:Elsevier
ISSN:0263-8223
Status:Published
Keywords:Composite bolted joints High strain-rate testing Energy absorption Progressive bearing failure
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Feser, Thomas
Deposited On:16 Jun 2020 13:03
Last Modified:16 Jun 2020 13:03

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