Overdamping of vibration resonances by liquid crystal elastomers

This work aims to compare the capability of vibration attenuation by standard elastomeric polymers, and by the new anomalously damping nematic liquid crystal elastomer. We use the most mainstream materials in both categories, and design two testing platforms: the ASTM-standard constrained layer plat...

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Published in:Scientific reports 2024-10, Vol.14 (1), p.25860-8, Article 25860
Main Authors: Elmadih, Waiel, Terentjev, Andrew, Liang, Hsin-Ling, Terentjev, Eugene
Format: Article
Language:English
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639/166/988
639/301/923/1028
Damping
Elastomers
Geometry
Humanities and Social Sciences
Liquid crystal elastomers
multidisciplinary
Polymers
Resonance
Science
Science (multidisciplinary)
Silicones
Vibration
Vibrations
Viscosity
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Terentjev, Andrew
Liang, Hsin-Ling
Terentjev, Eugene
description This work aims to compare the capability of vibration attenuation by standard elastomeric polymers, and by the new anomalously damping nematic liquid crystal elastomer. We use the most mainstream materials in both categories, and design two testing platforms: the ASTM-standard constrained layer plate resonance geometry, and the attenuation of resonances in a commercial device (electric drill) where the damping polymers were inserted into the casing. In the standard plate resonance testing, we find that LCE outperforms all standard damping materials, moreover, it brings the vibrating plate into the overdamped condition, which is unique for a non-fluid dissipative system. In the attenuation of high-frequency vibrations of a device, we also found LCE dissipates these vibrations much better, although we did not find the optimal insertion configuration for the damping polymer, and did not reach overdamping.
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subjects 639/166/988
639/301/923/1028
Damping
Elastomers
Geometry
Humanities and Social Sciences
Liquid crystal elastomers
multidisciplinary
Polymers
Resonance
Science
Science (multidisciplinary)
Silicones
Vibration
Vibrations
Viscosity
title Overdamping of vibration resonances by liquid crystal elastomers
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