Tension/compression anisotropy enhanced topology design

verfasst von
Georgios Gaganelis, Dustin Roman Jantos, Peter Mark, Philipp Junker
Abstract

A strategy for tension/compression anisotropy enhancement of topology optimization approaches is presented. To this end, a spectral decomposition of stresses and strains into tension and compression contributions allows for a multi-material optimization that favors tension or compression affine materials, dependent on the predominant local state. Numerical computations hence yield the topology of a construction part with maximum stiffness at constraint design volume. Additionally, the spatial distribution of a tension affine and a compression affine material is optimized, which is motivated by concrete engineering: financially cheap material, for example concrete, is applied in compression dominant regions in favor of stiffer but more expensive material, which is applied only in tension dominant regions, for example steel. The enhancement is applied both to a classical (mathematical) optimization method and the thermodynamic topology optimization. Several numerical examples are investigated and yield design suggestions for tension/compression sensitive construction parts, e.g., for future lightweight structures made of reinforced concrete.

Organisationseinheit(en)
Institut für Kontinuumsmechanik
Externe Organisation(en)
Ruhr-Universität Bochum
Typ
Artikel
Journal
Structural and Multidisciplinary Optimization
Band
59
Seiten
2227-2255
Anzahl der Seiten
29
ISSN
1615-147X
Publikationsdatum
15.02.2019
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Software, Steuerungs- und Systemtechnik, Angewandte Informatik, Computergrafik und computergestütztes Design, Steuerung und Optimierung
Elektronische Version(en)
https://doi.org/10.1007/s00158-018-02189-0 (Zugang: Geschlossen)
 

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