Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Influence of structural damping on radiation efficiency of a mechanically or acoustically excited panel
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-9632-8398
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2006 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Previous investigations have shown that damping is a good way to reduce structural vibration, but less effective for sound problems, since the radiation efficiency might be increased dramatically. This problem is further investigated in this paper. Results show that when a constrained damping layer is applied and when mechanical excitation is used, the radiation efficiency is increased by about 9-12 dB. This is mainly due to the near-field radiation around the excitation point, which is more important for a heavily damped structure than for a structure with little damping. The radiation efficiency of an acoustically excited panel, which is directly related to sound transmission, is also increased by about 6-9 dB when damping is added. Instead of radiation from near-field, forced transmission is now the main reason. Although resonant modes, which are the main contributors for vibration, are reduced greatly by added damping, the responses far away from the resonant frequency are little influenced, which are the main contributors for sound radiation and transmission.

Place, publisher, year, edition, pages
2006.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:kth:diva-59541Scopus ID: 2-s2.0-84883441571ISBN: 978-162748150-2 (print)OAI: oai:DiVA.org:kth-59541DiVA: diva2:475681
Conference
ICSV13, the Thirteenth International Congress on Sound and Vibration. Vienna, Austria. July 2-6, 2006
Note

QC 20141104

Available from: 2012-01-11 Created: 2012-01-11 Last updated: 2014-11-04Bibliographically approved

Open Access in DiVA

No full text

Scopus

Authority records BETA

Feng, Leping

Search in DiVA

By author/editor
Feng, LepingAlmgren, MartinJiang, Yan
By organisation
Aeronautical and Vehicle Engineering
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 43 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf