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Are Single Polymer Network Hydrogels with Chemical and Physical Cross-Links a Promising Dynamic Vibration Absorber Material? A Simulation Model Inquiry
Article

Numerically Exploring the Potential of Abating the Energy Flow Peaks through Tough, Single Network Hydrogel Vibration Isolators with Chemical and Physical Cross-Links

The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), Department of Engineering Mechanics, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
This paper is an extended version of our paper published in MEDYNA2020, 3rd Euro-Mediterranean Conference on Structural Dynamics and Vibroacoustics, Napoli, Italy, 17–19 February 2020.
Academic Editor: Gennaro Scarselli
Materials 2021, 14(4), 886; https://doi.org/10.3390/ma14040886
Received: 27 December 2020 / Revised: 1 February 2021 / Accepted: 5 February 2021 / Published: 13 February 2021
(This article belongs to the Special Issue Advanced Materials for Aerospace Engineering)
Traditional vibration isolation systems, using natural rubber vibration isolators, display large peaks for the energy flow from the machine source and into the receiving foundation, at the unavoidable rigid body resonance frequencies. However, tough, doubly cross-linked, single polymer network hydrogels, with both chemical and physical cross-links, show a high loss factor over a specific frequency range, due to the intensive adhesion–deadhesion activities of the physical cross-links. In this study, vibration isolators, made of this tough hydrogel, are theoretically applied in a realistic vibration isolation system, displaying several rigid body resonances and various energy flow transmission paths. A simulation model is developed, that includes a suitable stress–strain model, and shows a significant reduction of the energy flow peaks. In particular, the reduction is more than 30 times, as compared to the corresponding results using the natural rubber. Finally, it is shown that a significant reduction is possible, also without any optimization of the frequency for the maximum physical loss modulus. This is a clear advantage for polyvinyl alcohol hydrogels, that are somewhat missing the possibility to alter the frequency for the maximum physical loss, due to the physical cross-link system involved—namely, that of the borate esterification. View Full-Text
Keywords: vibration isolation system; rigid body resonance; single polymer network hydrogel; chemical cross-link; physical cross-link; high loss factor; adhesion–deadhesion activity; simulation model; energy flow reduction; polyvinyl alcohol hydrogel vibration isolation system; rigid body resonance; single polymer network hydrogel; chemical cross-link; physical cross-link; high loss factor; adhesion–deadhesion activity; simulation model; energy flow reduction; polyvinyl alcohol hydrogel
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MDPI and ACS Style

Kari, L. Numerically Exploring the Potential of Abating the Energy Flow Peaks through Tough, Single Network Hydrogel Vibration Isolators with Chemical and Physical Cross-Links. Materials 2021, 14, 886. https://doi.org/10.3390/ma14040886

AMA Style

Kari L. Numerically Exploring the Potential of Abating the Energy Flow Peaks through Tough, Single Network Hydrogel Vibration Isolators with Chemical and Physical Cross-Links. Materials. 2021; 14(4):886. https://doi.org/10.3390/ma14040886

Chicago/Turabian Style

Kari, Leif. 2021. "Numerically Exploring the Potential of Abating the Energy Flow Peaks through Tough, Single Network Hydrogel Vibration Isolators with Chemical and Physical Cross-Links" Materials 14, no. 4: 886. https://doi.org/10.3390/ma14040886

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