FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket

Abstract Additive manufacturing (AM) enables production of components that are not possible to make using traditional methods. In particular, lattice-type structures are of recent interest due to their potential for high strength-to-weight ratios and other desirable properties. However, standard per...

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Autores principales:	Todd Doehring, William Nelson, Thomas Harris, Alan Freed
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0ee4a1a0b0474ccb914876d031f2630b
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spelling	oai:doaj.org-article:0ee4a1a0b0474ccb914876d031f2630b2021-12-02T16:18:04ZFE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket10.1038/s41598-020-78239-92045-2322https://doaj.org/article/0ee4a1a0b0474ccb914876d031f2630b2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78239-9https://doaj.org/toc/2045-2322Abstract Additive manufacturing (AM) enables production of components that are not possible to make using traditional methods. In particular, lattice-type structures are of recent interest due to their potential for high strength-to-weight ratios and other desirable properties. However, standard periodic lattice structures have problems conforming to complex curved and multi-connected shapes (e.g. holes or sharp-to-smooth mating edges). In addition, standard lattices have well known shear and fatigue weaknesses due to their periodic basis/structure. To address these problems, we developed a new type of shape-conforming meta-structure (HGon) that extends lattices, enabling automated conforming to complex shapes and parametric meta-topology control. HGons also have unique vibration dampening and optimization capabilities. This study presents initial FE analyses of (Part 1) dynamic vibration responses of new HGon meta-structures compared with periodic lattices of equivalent density for a series of basic rectangular structures and (Part 2) a complex multi-connected aerodynamic bracket with field-based stress meta-topology optimization. Results show significantly enhanced vibration dampening behavior and superior strength-to-weight ratios for HGon meta-structures as compared to standard lattices.Todd DoehringWilliam NelsonThomas HarrisAlan FreedNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-22 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Todd Doehring William Nelson Thomas Harris Alan Freed FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
description	Abstract Additive manufacturing (AM) enables production of components that are not possible to make using traditional methods. In particular, lattice-type structures are of recent interest due to their potential for high strength-to-weight ratios and other desirable properties. However, standard periodic lattice structures have problems conforming to complex curved and multi-connected shapes (e.g. holes or sharp-to-smooth mating edges). In addition, standard lattices have well known shear and fatigue weaknesses due to their periodic basis/structure. To address these problems, we developed a new type of shape-conforming meta-structure (HGon) that extends lattices, enabling automated conforming to complex shapes and parametric meta-topology control. HGons also have unique vibration dampening and optimization capabilities. This study presents initial FE analyses of (Part 1) dynamic vibration responses of new HGon meta-structures compared with periodic lattices of equivalent density for a series of basic rectangular structures and (Part 2) a complex multi-connected aerodynamic bracket with field-based stress meta-topology optimization. Results show significantly enhanced vibration dampening behavior and superior strength-to-weight ratios for HGon meta-structures as compared to standard lattices.
format	article
author	Todd Doehring William Nelson Thomas Harris Alan Freed
author_facet	Todd Doehring William Nelson Thomas Harris Alan Freed
author_sort	Todd Doehring
title	FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
title_short	FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
title_full	FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
title_fullStr	FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
title_full_unstemmed	FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
title_sort	fe vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/0ee4a1a0b0474ccb914876d031f2630b
work_keys_str_mv	AT todddoehring fevibrationanalysesofnovelconformingmetastructuresandstandardlatticesforsimplebricksandatopologyoptimizedaerodynamicbracket AT williamnelson fevibrationanalysesofnovelconformingmetastructuresandstandardlatticesforsimplebricksandatopologyoptimizedaerodynamicbracket AT thomasharris fevibrationanalysesofnovelconformingmetastructuresandstandardlatticesforsimplebricksandatopologyoptimizedaerodynamicbracket AT alanfreed fevibrationanalysesofnovelconformingmetastructuresandstandardlatticesforsimplebricksandatopologyoptimizedaerodynamicbracket
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FE vibration analyses of novel conforming meta-structures and standard lattices for simple bricks and a topology-optimized aerodynamic bracket

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