elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Vibration damping capabilities of treatments with frequency and temperature dependent viscoelastic material properties

Gröhlich, Martin and Böswald, Marc and Winter, Rene (2019) Vibration damping capabilities of treatments with frequency and temperature dependent viscoelastic material properties. German Acoustical Society (DEGA e.V.). ICA 2019, 09.-13. Sep. 2019, Aachen, Deutschland. ISBN 978-3-939296-15-7. ISSN 2226-7808.

[img] PDF - Only accessible within DLR
742kB

Official URL: http://pub.dega-akustik.de/ICA2019/data/articles/000565.pdf

Abstract

Due to their low mass and stiffening components like frames, stringers and panels, aircraft fuselage structures are prone to vibration. In order to improve acoustic comfort inside a cabin, specific vibration damping of such components would be helpful. Most common damping layouts make use of a viscoelastic material as the main source of vibration energy dissipation. Such material is placed at sensitive positions of a structure to absorb the energy of operational deflection shapes of concern. However, the material behavior of viscoelastic materials varies considerably with frequency and temperature and needs to be considered during the design process. In this paper, a finite element approach for local modelling of viscoelastic damping is presented. A viscoelastic material with frequency and temperature dependent properties is introduced as a dedicated damping material for aeronautic applications. Using the FE method, the consequences of temperature and frequency influence on the vibration damping capability of a Constrained Layer Damping treatment with the particular damping material are presented.

Item URL in elib:https://elib.dlr.de/130403/
Document Type:Conference or Workshop Item (Speech)
Title:Vibration damping capabilities of treatments with frequency and temperature dependent viscoelastic material properties
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gröhlich, MartinMartin.Groehlich (at) dlr.deUNSPECIFIED
Böswald, MarcMarc.Boeswald (at) dlr.deUNSPECIFIED
Winter, ReneRene.Winter (at) dlr.deUNSPECIFIED
Date:September 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 4273-4280
Publisher:German Acoustical Society (DEGA e.V.)
ISSN:2226-7808
ISBN:978-3-939296-15-7
Status:Published
Keywords:viscoelasticity, vibration damping, damping layout
Event Title:ICA 2019
Event Location:Aachen, Deutschland
Event Type:international Conference
Event Dates:09.-13. Sep. 2019
Organizer:German Acoustical Society (DEGA e.V.)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Gröhlich, Martin
Deposited On:06 Jan 2020 16:10
Last Modified:06 Jan 2020 16:10

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.