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Structural and Multidisciplinary Optimization
Erschienen in: Structural and Multidisciplinary Optimization 2/2017

28.06.2016 | RESEARCH PAPER

Evolutionary topology optimization of elastoplastic structures

verfasst von: Liang Xia, Felix Fritzen, Piotr Breitkopf

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 2/2017

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Abstract

We have recently proposed in (Fritzen et al., Int J Numer Methods Eng 106(6):430–453, 2016) an evolutionary topology optimization model for the design of multiscale elastoplastic structures, which is in general independent of the applied material law. Facing the variability of the final design for minor parameter changes when dealing with plastic structural designs, we further improve the robustness and the effectiveness of the BESO optimization procedure in this work by introducing a damping scheme on sensitivity numbers and by progressively reducing the sensitivity filtering radius. The damping scheme constraining the variance of the sensitivity numbers stabilizes the topological evolution process in particular for dissipative structural designs. By setting initially a large filter radius value and reducing it gradually, the emergence of the redundant structural branches, which are to be eliminated afterwards and are the main reasons deteriorating the design process, could be avoided. The robustness and the effectiveness of the improved model has been validated by means of benchmark numerical examples of conventional homogeneous structures.
Vorheriger Artikel Introducing a level-set based shape and topology optimization method for the wear of composite materials with geometric constraints
Nächster Artikel Structural analysis and optimization of tall buildings connected with skybridges and atria

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Metadaten
Titel
Evolutionary topology optimization of elastoplastic structures
verfasst von
Liang Xia
Felix Fritzen
Piotr Breitkopf
Publikationsdatum
28.06.2016
Verlag
Springer Berlin Heidelberg
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 2/2017
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-016-1523-1

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