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Vademecum-based approach to multi-scale topological material design

The work deals on computational design of structural materials by resorting to computational homogenization and topological optimization techniques. The goal is then to minimize the structural (macro-scale) compliance by appropriately designing the material distribution (microstructure) at a lower s...

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Detalles Bibliográficos
Autores principales: Ferrer, A., Oliver, J., Cante, J. C., Lloberas-Valls, O.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7175661/
https://www.ncbi.nlm.nih.gov/pubmed/32355636
http://dx.doi.org/10.1186/s40323-016-0078-4
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author Ferrer, A.
Oliver, J.
Cante, J. C.
Lloberas-Valls, O.
author_facet Ferrer, A.
Oliver, J.
Cante, J. C.
Lloberas-Valls, O.
author_sort Ferrer, A.
collection PubMed
description The work deals on computational design of structural materials by resorting to computational homogenization and topological optimization techniques. The goal is then to minimize the structural (macro-scale) compliance by appropriately designing the material distribution (microstructure) at a lower scale (micro-scale), which, in turn, rules the mechanical properties of the material. The specific features of the proposed approach are: (1) The cost function to be optimized (structural stiffness) is defined at the macro-scale, whereas the design variables defining the micro-structural topology lie on the low scale. Therefore a coupled, two-scale (macro/micro), optimization problem is solved unlike the classical, single-scale, topological optimization problems. (2) To overcome the exorbitant computational cost stemming from the multiplicative character of the aforementioned multiscale approach, a specific strategy, based on the consultation of a discrete material catalog of micro-scale optimized topologies (Computational Vademecum) is used. The Computational Vademecum is computed in an offline process, which is performed only once for every constitutive-material, and it can be subsequently consulted as many times as desired in the online design process. This results into a large diminution of the resulting computational costs, which make affordable the proposed methodology for multiscale computational material design. Some representative examples assess the performance of the considered approach.
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spelling pubmed-71756612020-04-28 Vademecum-based approach to multi-scale topological material design Ferrer, A. Oliver, J. Cante, J. C. Lloberas-Valls, O. Adv Model Simul Eng Sci Research Article The work deals on computational design of structural materials by resorting to computational homogenization and topological optimization techniques. The goal is then to minimize the structural (macro-scale) compliance by appropriately designing the material distribution (microstructure) at a lower scale (micro-scale), which, in turn, rules the mechanical properties of the material. The specific features of the proposed approach are: (1) The cost function to be optimized (structural stiffness) is defined at the macro-scale, whereas the design variables defining the micro-structural topology lie on the low scale. Therefore a coupled, two-scale (macro/micro), optimization problem is solved unlike the classical, single-scale, topological optimization problems. (2) To overcome the exorbitant computational cost stemming from the multiplicative character of the aforementioned multiscale approach, a specific strategy, based on the consultation of a discrete material catalog of micro-scale optimized topologies (Computational Vademecum) is used. The Computational Vademecum is computed in an offline process, which is performed only once for every constitutive-material, and it can be subsequently consulted as many times as desired in the online design process. This results into a large diminution of the resulting computational costs, which make affordable the proposed methodology for multiscale computational material design. Some representative examples assess the performance of the considered approach. Springer International Publishing 2016-08-02 2016 /pmc/articles/PMC7175661/ /pubmed/32355636 http://dx.doi.org/10.1186/s40323-016-0078-4 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Research Article
Ferrer, A.
Oliver, J.
Cante, J. C.
Lloberas-Valls, O.
Vademecum-based approach to multi-scale topological material design
title Vademecum-based approach to multi-scale topological material design
title_full Vademecum-based approach to multi-scale topological material design
title_fullStr Vademecum-based approach to multi-scale topological material design
title_full_unstemmed Vademecum-based approach to multi-scale topological material design
title_short Vademecum-based approach to multi-scale topological material design
title_sort vademecum-based approach to multi-scale topological material design
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7175661/
https://www.ncbi.nlm.nih.gov/pubmed/32355636
http://dx.doi.org/10.1186/s40323-016-0078-4
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