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Analytical and numerical residual stress models for fiber metal laminates – comparison and application

Hausmann, Joachim and Naghipour, Parya and Schulze, Karola (2013) Analytical and numerical residual stress models for fiber metal laminates – comparison and application. Procedia Materials Science, 2, pp. 68-73. Elsevier. ISSN 2211-8128

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Fiber metal laminates (FML) consist of alternately stacked plies of polymer matrix composites and metallic foils. Such material systems exhibit advantageous properties regarding fracture toughness, impact resistance and structural strength. Glass fiber reinforced aluminum (GLARE) with the constituents glass fibers, epoxy resin and aluminum foils is state-of-the-art. To improve the processing of FML thermoplastic matrix systems are promising. Carbon fibers could enhance the stiffness of the laminates. However, both modifications have a serious influence on thermal residual stresses grown by the mismatch of coefficient of thermal expansion and the cooling down from processing temperature. Finite element analysis (FEA) provides a reliable tool to predict the state of thermal residual stresses for FML made of different constituents. Otherwise, analytical models are an under-estimated but powerful tool, too. Closed formulas based on mechanical relationships can be applied fast and easy. Both, numerical and analytical methods are used to analyze thermal residual stresses caused by processing of different material systems.

Item URL in elib:https://elib.dlr.de/85463/
Document Type:Article
Title:Analytical and numerical residual stress models for fiber metal laminates – comparison and application
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hausmann, Joachimjoachim.hausmann (at) dlr.deUNSPECIFIED
Naghipour, Paryaparya.naghipour (at) dlr.deUNSPECIFIED
Schulze, Karolakarola.schulze (at) dlr.deUNSPECIFIED
Date:February 2013
Journal or Publication Title:Procedia Materials Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 68-73
Keywords:fibre metal laminates; thermal residual stresses; modelling; processing
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: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Hausmann, Dr.-Ing. Joachim
Deposited On:27 Nov 2013 14:47
Last Modified:27 Nov 2013 14:47

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