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Strength prediction of adhesively bonded single lap joints with the eXtended Finite Element Method

Völkerink, Oliver and Kosmann, Jens and Schollerer, Martin and Holzhüter, Dirk and Hühne, Christian (2019) Strength prediction of adhesively bonded single lap joints with the eXtended Finite Element Method. Journal of Adhesion, 95 (5-7), pp. 474-494. Taylor & Francis. DOI: 10.1080/00218464.2018.1553120 ISSN 0021-8464

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Official URL: https://doi.org/10.1080/00218464.2018.1553120

Abstract

Because of a planar load introduction, a high strength over weight ratio, avoidance of holes, corrosion resistance and component reduction, adhesively bonded joints attract increasing attention in lightweight construction. Nonetheless, a reliable prediction of the joints’ behaviour in terms of stress and strength is still a tremendous challenge.In this study the eXtended Finite Element Method (XFEM) in combination with cohesive behaviour is used to model crack growth under quasi-static loading. The objective of this work is to study the influence of different continuum mechanical material models for the adhesive on XFEM strength predictions. It will be evaluated whether the strength prediction of joints mainly loaded in shear is more accurate with a high sophisticated material model. Therefore, strength predictions of Single Lap Joints (SLJ) with thick aluminium adherends are performed. Herein, digital image correlation (DIC) data recorded during experimental tests are used to assess the material models in combination with the derived material parameters. Furthermore, with the experimental results the performed strength predictions are evaluated. It could be revealed that XFEM in combination with a suitable yield criterion and appropriate material parameters is a valid technique for the strength prediction of lap shear joints since the variance to the experiments is less than 1 %.

Item URL in elib:https://elib.dlr.de/127827/
Document Type:Article
Title:Strength prediction of adhesively bonded single lap joints with the eXtended Finite Element Method
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Völkerink, Oliveroliver.voelkerink (at) dlr.dehttps://orcid.org/0000-0002-9589-1963
Kosmann, JensJens.Kosmann (at) dlr.dehttps://orcid.org/0000-0002-2225-4832
Schollerer, MartinMartin.Schollerer (at) dlr.dehttps://orcid.org/0000-0001-7015-9461
Holzhüter, DirkDirk.Holzhueter (at) dlr.dehttps://orcid.org/0000-0003-1001-2366
Hühne, ChristianChristian.Huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Date:2019
Journal or Publication Title:Journal of Adhesion
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:95
DOI :10.1080/00218464.2018.1553120
Page Range:pp. 474-494
Publisher:Taylor & Francis
ISSN:0021-8464
Status:Published
Keywords:XFEM; Drucker-Prager; lap-shear; finite element analysis; aerospace; damage mechanics
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 - Simulation and Validation, L - Structures and Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Völkerink, Oliver
Deposited On:21 Jun 2019 09:51
Last Modified:21 Jun 2019 09:51

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