Beam-like topologically interlocked structures with hierarchical interlocking
dc.contributor.author
Koureas, Ioannis
dc.contributor.author
Pundir, Mohit
dc.contributor.author
Feldfogel, Shai
dc.contributor.author
Kammer, David S.
dc.date.accessioned
2023-05-15T10:07:42Z
dc.date.available
2023-05-09T18:16:43Z
dc.date.available
2023-05-14T09:27:31Z
dc.date.available
2023-05-15T10:07:42Z
dc.date.issued
2023-08
dc.identifier.issn
0021-8936
dc.identifier.issn
1528-9036
dc.identifier.other
10.1115/1.4062348
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/611352
dc.description.abstract
Topologically interlocked materials and structures, which are assemblies of unbonded interlocking building blocks, are promising concepts for versatile structural applications. They have been shown to exhibit exceptional mechanical properties, including outstanding combinations of stiffness, strength, and toughness, beyond those achievable with common engineering materials. Recent work has established a theoretical upper limit for the strength and toughness of beam-like topologically interlocked structures. However, this theoretical limit is only attainable for structures with unrealistically high friction coefficients; therefore, it remains unknown whether it is achievable in actual structures. Here, we demonstrate that a hierarchical approach for topological interlocking, inspired by biological systems, overcomes these limitations and provides a path toward optimized mechanical performance. We consider beam-like topologically interlocked structures that present a sinusoidal surface morphology with controllable amplitude and wavelength and examine the properties of the structures using numerical simulations. The results show that the presence of surface morphologies increases the effective frictional strength of the interfaces and, if well-designed, enables us to reach the theoretical limit of the structural carrying capacity with realistic friction coefficients. Furthermore, we observe that the contribution of the surface morphology to the effective friction coefficient of the interface is well described by a criterion combining the surface curvature and surface gradient. Our study demonstrates the ability to architecture the surface morphology in beam-like topological interlocked structures to significantly enhance its structural performance.
en_US
dc.language.iso
en
en_US
dc.publisher
American Society of Mechanical Engineers
en_US
dc.subject
architectured structures
en_US
dc.subject
surface morphology
en_US
dc.subject
Frictional contact
en_US
dc.subject
computational mechanics
en_US
dc.subject
failure criteria
en_US
dc.subject
mechanical properties of materials
en_US
dc.title
Beam-like topologically interlocked structures with hierarchical interlocking
en_US
dc.type
Journal Article
dc.date.published
2023-05-09
ethz.journal.title
Journal of Applied Mechanics
ethz.journal.volume
90
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
J. appl. mech.
ethz.pages.start
081008
en_US
ethz.size
7 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
New York, NY
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::09650 - Kammer, David / Kammer, David
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02606 - Institut für Baustoffe (IfB) / Institute for Building Materials::09650 - Kammer, David / Kammer, David
en_US
ethz.tag
rt-tis
en_US
ethz.relation.isSupplementedBy
10.3929/ethz-b-000612186
ethz.date.deposited
2023-05-09T18:16:43Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2024-02-02T23:10:36Z
ethz.rosetta.lastUpdated
2024-02-02T23:10:36Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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Journal Article [133575]