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Damping of selectively bonded 3D woven lattice materials

Salari-Sharif, Ladan, Ryan, Stephen M., Pelacci, Manuel, Guest, James K., Valdevit, Lorenzo and Szyniszewski, Stefan (2018) Damping of selectively bonded 3D woven lattice materials Scientific Reports, 8, 14572. pp. 1-6.

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Abstract

The objective of this paper is to unveil a novel damping mechanism exhibited by 3D woven lattice materials (3DW), with emphasis on response to high-frequency excitations. Conventional bulk damping materials, such as rubber, exhibit relatively low stiffness, while stiff metals and ceramics typically have negligible damping. Here we demonstrate that high damping and structural stiffness can be simultaneously achieved in 3D woven lattice materials by brazing only select lattice joints, resulting in a load-bearing lattice frame intertwined with free, ‘floating’ lattice members to generate damping. The produced material samples are comparable to polymers in terms of damping coefficient, but are porous and have much higher maximum use temperature. We shed light on a novel damping mechanism enabled by an interplay between the forcing frequency imposed onto a load-bearing lattice frame and the motion of the embedded, free-moving lattice members. This novel class of damping metamaterials has potential use in a broad range of weight sensitive applications that require vibration attenuation at high frequencies.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Salari-Sharif, Ladan
Ryan, Stephen M.
Pelacci, Manuelm.pelacci@surrey.ac.uk
Guest, James K.
Valdevit, Lorenzo
Szyniszewski, Stefans.szyniszewski@surrey.ac.uk
Date : 1 October 2018
Funders : Engineering and Physical Science Council (EPSRC)
DOI : 10.1038/s41598-018-32625-6
Copyright Disclaimer : © The authors 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Depositing User : Clive Harris
Date Deposited : 05 Sep 2018 07:19
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/849198

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