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Shape optimization of cast parts with porous material

Schumacher, Axel and Hakim, Khaled and Bartsch, Marion (2009) Shape optimization of cast parts with porous material. In: Proceeding of the WCSMO 8, CD-ROM, Paper Nr.1190, 7 Seiten. WCSMO-8 8th World Congress on Structural and Multidisciplinary Optimization, 01.-05. Juni 2009, Lissabon, Portugal.

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Abstract

The effect of microscopic material inhomogeneities on the shape optimization of structural parts has been investigated. For the example of a flat, dog-bone shaped tensile test specimen it has been shown that material porosity has an influence on the stress distribution in the specimen and therefore on the shape optimization results in general. The porosity has been implemented by a random generator into the structural analysis model. In order to capture the scattering of the pore distribution in real materials, 30 models have been generated for each combination of shape design variables. The stochastic responses with expectation value and variance have been approximated by response surfaces. The comparison of the optima for different porosities shows that the location of the optimum depends strongly on the porosity.

Item URL in elib:https://elib.dlr.de/61221/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Shape optimization of cast parts with porous material
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schumacher, AxelHAW HamburgUNSPECIFIED
Hakim, KhaledHAW HamburgUNSPECIFIED
Bartsch, MarionMarion.Bartsch (at) dlr.deUNSPECIFIED
Date:2 June 2009
Journal or Publication Title:Proceeding of the WCSMO 8, CD-ROM, Paper Nr.1190, 7 Seiten
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Shape optimization – uncertainties – cast parts – porous material
Event Title:WCSMO-8 8th World Congress on Structural and Multidisciplinary Optimization
Event Location:Lissabon, Portugal
Event Type:international Conference
Event Dates:01.-05. Juni 2009
Organizer:International Society for Structural and Multidisciplinary Optimization
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:03 Dec 2009 15:25
Last Modified:03 Dec 2009 16:25

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