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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201706311
|2 doi
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|a eng
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| 100 |
1 |
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|a Fang, Hongbin
|e verfasserin
|4 aut
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| 245 |
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|a Programmable Self-Locking Origami Mechanical Metamaterials
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|c 2018
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|a Text
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|a ƒaComputermedien
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|a Date Completed 01.08.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Developing mechanical metamaterials with programmable properties is an emerging topic receiving wide attention. While the programmability mainly originates from structural multistability in previously designed metamaterials, here it is shown that nonflat-foldable origami provides a new platform to achieve programmability via its intrinsic self-locking and reconfiguration capabilities. Working with the single-collinear degree-4 vertex origami tessellation, it is found that each unit cell can self-lock at a nonflat configuration and, therefore, possesses wide design space to program its foldability and relative density. Experiments and numerical analyses are combined to demonstrate that by switching the deformation modes of the constituent cell from prelocking folding to postlocking pressing, its stiffness experiences a sudden jump, implying a limiting-stopper effect. Such a stiffness jump is generalized to a multisegment piecewise stiffness profile in a multilayer model. Furthermore, it is revealed that via strategically switching the constituent cells' deformation modes through passive or active means, the n-layer metamaterial's stiffness is controllable among 2n target stiffness values. Additionally, the piecewise stiffness can also trigger bistable responses dynamically under harmonic excitations, highlighting the metamaterial's rich dynamic performance. These unique characteristics of self-locking origami present new paths for creating programmable mechanical metamaterials with in situ controllable mechanical properties
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|a Journal Article
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|a degree-4 vertex origami
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|a mechanical metamaterials
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|a metastrucutres
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|a origami dynamics
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|a piecewise stiffness
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| 700 |
1 |
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|a Chu, Shih-Cheng A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xia, Yutong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Kon-Well
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 15 vom: 07. Apr., Seite e1706311
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:30
|g year:2018
|g number:15
|g day:07
|g month:04
|g pages:e1706311
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201706311
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