lnu.sePublications
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
Modal test results of a ship under operational conditions
University of Southern Denmark, Denmark.
University of Southern Denmark, Denmark.ORCID iD: 0000-0003-2025-7842
2014 (English)In: Topics in Modal Analysis II, Volume 8: Proceedings of the 32nd IMAC, A Conference and Exposition on Structural Dynamics, 2014 / [ed] Randall Allemang, Springer, 2014, Vol. 8, p. 199-206Conference paper, Published paper (Refereed)
Abstract [da]

Skibe er udsat for et komplekst vibration miljø, påvirket af havet, samt driftsforholdene. Især er det vanskeligt at anslå analytisk værdier for de hydrodynamiske påvirkninger. Eksperimentelle resultater er derfor vigtigtfor at kontrollere de analytiske modeller. I den foreliggende artikel præsenteres foreløbige resultater fra en fuld skala modal test af en Ro-Lo skib, under tre forskellige driftsbetingelser. Da modal test i fuld skala skibe i drift er sjældne, præsenteres forsøgs opstillingen sammen med foreløbige modal parametre udtrukket fra målingerne. Denne foreløbige undersøgelse fokuserer på driftsforhold påvirkning af de modal parametre og viser en betydelig variation af modal dæmpning af skibet i drift, med cirka 400%, 200% og 400% forskel i de første tre globale lodrette bøjning modes, ved forskellige operations hastigheder.

Abstract [en]

Sea vessels are exposed to a complex vibration environment, influenced by the sea as well as by operational conditions. Particularly, the hydrodynamic load effects are difficult to estimate analytically. Experimental results are therefore important to verify the analytical models. In the present paper preliminary results from a full-scale modal test of a Ro-Lo vessel carried out for three different operating conditions are presented. Since little full-scale modal testing seems to have been conducted on vessels in operation, the experimental setup together with preliminary modal parameters extracted from the measurements are presented. This preliminary study is focusing on investigating the data with respect to operational conditions and shows a significant variation of the modal damping of the vessel in operation, with approximately 400 %, 200 % and 400 % difference in the first three global vertical bending modes, respectively.

Place, publisher, year, edition, pages
Springer, 2014. Vol. 8, p. 199-206
Series
Conference Proceedings of the Society for Experimental Mechanics Series, ISSN 2191-5644
Keywords [en]
Operational Modal Test, Sea vessel, Full-scale measurement, Hydrodynamic loads, Damping
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-56963DOI: 10.1007/978-3-319-04774-4_20ISBN: 9783319047737 (print)ISBN: 9783319047744 (print)OAI: oai:DiVA.org:lnu-56963DiVA, id: diva2:1039786
Conference
32nd International Modal Analysis Conference (IMAC), Orlando, USA, February 3-6, 2014
Available from: 2016-10-25 Created: 2016-09-28 Last updated: 2016-10-25Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Brandt, Anders

Search in DiVA

By author/editor
Brandt, Anders
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 35 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