A novel design of multi-stable metastructures for energy dissipation

Multi-stable metastructures composed of curved beams can switch to a series of stable configurations via elastic snap-through transitions. The elastic deformations allow metastructures to function as reusable energy absorbers. However, conventional metastructure designs based on solid beams often re...

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Autores principales:	Yong Zhang, Marcel Tichem, Fred van Keulen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Snap-through behavior Multi-stable metastructure Lattice structure Cross-section design Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/be8a71e295fc41c6b15f250c3d11d3ed
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spelling	oai:doaj.org-article:be8a71e295fc41c6b15f250c3d11d3ed2021-11-12T04:24:49ZA novel design of multi-stable metastructures for energy dissipation0264-127510.1016/j.matdes.2021.110234https://doaj.org/article/be8a71e295fc41c6b15f250c3d11d3ed2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521007899https://doaj.org/toc/0264-1275Multi-stable metastructures composed of curved beams can switch to a series of stable configurations via elastic snap-through transitions. The elastic deformations allow metastructures to function as reusable energy absorbers. However, conventional metastructure designs based on solid beams often result in relatively low energy dissipation. In this work, it is found that by increasing the beam unit’s bending stiffness while keeping the volume/mass constant, energy dissipation of the metastructure can be largely improved. Based on this observation, we propose two types of structural designs (lattice and hollow cross-section design) as building blocks for multi-stable metastructures. The lattice design is realized by incorporating lattice structures into pre-shaped beams while for the hollow cross-section design, a box-shaped cross section is adopted. The proposed structures are experimentally characterized under cyclic loading and are shown to exhibit sequential snap-through transitions with relatively large energy dissipation. Results show the snap-through behavior can be further tailored through tuning structural in-plane thickness. Effects of geometric parameters on snap-through, local buckling and bi-stability are investigated, and the feasible design domains for selecting proper lattice and cross-section geometries are identified. In addition, we demonstrate that the proposed design is not restricted to beams, and can be extended to shell structures.Yong ZhangMarcel TichemFred van KeulenElsevierarticleSnap-through behaviorMulti-stable metastructureLattice structureCross-section designMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110234- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Snap-through behavior Multi-stable metastructure Lattice structure Cross-section design Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Snap-through behavior Multi-stable metastructure Lattice structure Cross-section design Materials of engineering and construction. Mechanics of materials TA401-492 Yong Zhang Marcel Tichem Fred van Keulen A novel design of multi-stable metastructures for energy dissipation
description	Multi-stable metastructures composed of curved beams can switch to a series of stable configurations via elastic snap-through transitions. The elastic deformations allow metastructures to function as reusable energy absorbers. However, conventional metastructure designs based on solid beams often result in relatively low energy dissipation. In this work, it is found that by increasing the beam unit’s bending stiffness while keeping the volume/mass constant, energy dissipation of the metastructure can be largely improved. Based on this observation, we propose two types of structural designs (lattice and hollow cross-section design) as building blocks for multi-stable metastructures. The lattice design is realized by incorporating lattice structures into pre-shaped beams while for the hollow cross-section design, a box-shaped cross section is adopted. The proposed structures are experimentally characterized under cyclic loading and are shown to exhibit sequential snap-through transitions with relatively large energy dissipation. Results show the snap-through behavior can be further tailored through tuning structural in-plane thickness. Effects of geometric parameters on snap-through, local buckling and bi-stability are investigated, and the feasible design domains for selecting proper lattice and cross-section geometries are identified. In addition, we demonstrate that the proposed design is not restricted to beams, and can be extended to shell structures.
format	article
author	Yong Zhang Marcel Tichem Fred van Keulen
author_facet	Yong Zhang Marcel Tichem Fred van Keulen
author_sort	Yong Zhang
title	A novel design of multi-stable metastructures for energy dissipation
title_short	A novel design of multi-stable metastructures for energy dissipation
title_full	A novel design of multi-stable metastructures for energy dissipation
title_fullStr	A novel design of multi-stable metastructures for energy dissipation
title_full_unstemmed	A novel design of multi-stable metastructures for energy dissipation
title_sort	novel design of multi-stable metastructures for energy dissipation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/be8a71e295fc41c6b15f250c3d11d3ed
work_keys_str_mv	AT yongzhang anoveldesignofmultistablemetastructuresforenergydissipation AT marceltichem anoveldesignofmultistablemetastructuresforenergydissipation AT fredvankeulen anoveldesignofmultistablemetastructuresforenergydissipation AT yongzhang noveldesignofmultistablemetastructuresforenergydissipation AT marceltichem noveldesignofmultistablemetastructuresforenergydissipation AT fredvankeulen noveldesignofmultistablemetastructuresforenergydissipation
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A novel design of multi-stable metastructures for energy dissipation

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