Topology optimization - engineering contribution to architectural design
Authors:
- Katarzyna Tajs-Zielińska,
- Bogdan Bochenek
Abstract
The idea of the topology optimization is to find within a con sidered design domain the distribution of material that is optimal in some sense. Mat erial, during optimization process, is redistributed and p arts that are not necessary from objective point of view are removed. The result is a solid/void structure, for which an obj ective function is minimized. This paper presents an application of topology optimization to multi-material structures. The design domain defined by shape of a structure is divided into s ub-regions, for which different materials are assigned. During de sign process material is reloc ated, but only within selected region. The proposed idea has bee n inspired by architectural de signs like multi-material facades of buildings. The effec tiveness of topology optimizatio n is determined by proper choice of numerical optimization algorithm. This paper utilises very efficient heuristic method called Cellular Automata. Cellular Automata are mathematical, d iscrete idealization of a physical systems. Engineering implementation of Cellular Automa ta requires decomposition of the design domain into a uniform lattice of cells. It is assume d, that the interaction between cells takes place only within the neighbouring cells. The inter action is governed by simple, local update rules, which are based on heuristics or physical l aws. The numerical studies show, that this method can be attractive alternative to traditional g radient-based algorithms. The proposed approach is evaluated by selected numerical examples o f multi-material bridge structures, for which various material configurations are exami ned. The numerical studies demonstrated a significant influence the material sub-regions l ocation on the final topologies. The influence of assumed volume fraction on final topologies fo r multi-material structures is also observed and discussed. The results of numerical calculati ons show, that this approach produces different results as compared with classical one-mater ial problems.
- Record ID
- CUT597f631ad52a4bda9b6e6d8a5d418e62
- Publication categories
- ; ;
- Author
- Journal series
- IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X, Irregular
- Issue year
- 2017
- Vol
- 245
- Pages
- [1-10]
- Article number
- 082057
- Other elements of collation
- il. kolor.; tab.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 26; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 245
- Conference
- World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium (WMCAUS 2017), 2017, 12-06-2017 - 16-06-2017, Prague, Czechy
- Keywords in English
- topology optimization, multi-material structures, cellular automata
- DOI
- DOI:10.1088/1757-899X/245/8/082057 Opening in a new tab
- URL
- http://iopscience.iop.org/article/10.1088/1757-899X/245/8/082057 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 15
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT597f631ad52a4bda9b6e6d8a5d418e62/
- URN
urn:pkr-prod:CUT597f631ad52a4bda9b6e6d8a5d418e62
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