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Viscoelastic damping design - Thermal impact on a constrained layer damping treatment

Gröhlich, Martin and Lang, Andrej and Böswald, Marc and Meier, Jens (2021) Viscoelastic damping design - Thermal impact on a constrained layer damping treatment. Materials and Design, 207 (109885), pp. 1-17. Elsevier. doi: 10.1016/j.matdes.2021.109885. ISSN 0264-1275.

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Official URL: https://www.sciencedirect.com/science/article/pii/S026412752100438X


Constrained layer damping treatments have been commonly used for vibration damping. The included viscoelastic material exhibits high damping potential that is retrieved under shear deformation. However, the impact of temperature on the viscoelastic properties and thus on the vibration damping often remains unconsidered. This paper addresses the design of viscoelastic damping under thermal consideration. For this purpose, the frequency and temperature dependent properties of a bromobutyl rubber compound were characterized in a dynamic mechanic thermal analysis. The viscoelastic material properties are employed in a finite element model of a structure with a constrained layer damping treatment. Subsequently, the modal damping of the structural vibrations is analyzed under varying temperature conditions. The analyses show a significant thermal impact on the modal damping. In this context, an approach is presented for compensating the adverse thermal effect on damping by a modified geometric design of the viscoelastic core layer.

Item URL in elib:https://elib.dlr.de/141155/
Document Type:Article
Title:Viscoelastic damping design - Thermal impact on a constrained layer damping treatment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gröhlich, MartinMartin.Groehlich (at) dlr.dehttps://orcid.org/0000-0002-4552-4006
Lang, Andrejandrej.lang (at) dikautschuk.dehttps://orcid.org/0000-0002-9583-0888
Böswald, MarcMarc.Boeswald (at) dlr.dehttps://orcid.org/0000-0001-8260-8623
Meier, Jensjens.meier (at) dikautschuk.dehttps://orcid.org/0000-0002-5024-8325
Date:September 2021
Journal or Publication Title:Materials and Design
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.matdes.2021.109885
Page Range:pp. 1-17
Keywords:constrained layer damping, viscoelastic master curves, viscoelastic damping modeling, Bromobutyl rubber, geometric shape adaption
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Gröhlich, Martin
Deposited On:26 Aug 2021 16:19
Last Modified:24 May 2022 23:46

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