Homogenization‐based topology optimization for high‐resolution manufacturable microstructures

Summary This paper presents a projection method to obtain high‐resolution, manufacturable structures from efficient and coarse‐scale homogenization‐based topology optimization results. The presented approach bridges coarse and fine scale, such that the complex periodic microstructures can be represe...

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Bibliographic Details
Published inInternational journal for numerical methods in engineering Vol. 113; no. 8; pp. 1148 - 1163
Main Authors Groen, Jeroen P., Sigmund, Ole
Format Journal Article
LanguageEnglish
Published Bognor Regis Wiley Subscription Services, Inc 24.02.2018
Subjects
Heuristic methods
High resolution
Homogenization
manufacturing constraints
Topology optimization
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Summary:Summary This paper presents a projection method to obtain high‐resolution, manufacturable structures from efficient and coarse‐scale homogenization‐based topology optimization results. The presented approach bridges coarse and fine scale, such that the complex periodic microstructures can be represented by a smooth and continuous lattice on the fine mesh. A heuristic methodology allows control of the projected topology, such that a minimum length scale on both solid and void features is ensured in the final result. Numerical examples show excellent behavior of the method, where performances of the projected designs are almost equal to the homogenization‐based solutions. A significant reduction in computational cost is observed compared to conventional topology optimization approaches.
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ISSN:0029-5981
1097-0207
DOI:10.1002/nme.5575