Three dimensional experimental modal analysis on a water filled cylindrical shell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Results from an experimental modal analysis on a waterfilled cylindrical shell are compared with a corresponding analytic model solution. The resulting modal parameters are used to determine directional forces from turbulent boundary layer pipe flow excitation. The thin-walled, 24-inch long, aluminum shell has clamped end conditions imposed within a section of a continuous pipe. Mode shapes, damping, in vacuo and water-filled resonance frequencies, and modal masses are evaluated. The three dimensional shell response to all three coordinate excitations is examined and compared. Directional coupling exists for all shell modes except the lowest order (n=0: "breathing") modes. These modes represent a different class of modes from the higher order bending and lobar modes which are coupled in all directions. The lowest order (n=0) circumferential and primarily axial modes can easily be identified in the experimental data, however the lowest order radial modes cannot.

Original languageEnglish (US)
Title of host publicationIMAC-XXVII
Subtitle of host publicationConference and Exposition on Structural Dynamics - Model Verification and Validation
StatePublished - Dec 1 2009
Event27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII - Orlando, FL, United States
Duration: Feb 9 2009Feb 12 2009

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Other

Other27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII
CountryUnited States
CityOrlando, FL
Period2/9/092/12/09

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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  • Cite this

    Bonness, W. K., Fahnline, J. B., & Capone, D. (2009). Three dimensional experimental modal analysis on a water filled cylindrical shell. In IMAC-XXVII: Conference and Exposition on Structural Dynamics - Model Verification and Validation (Conference Proceedings of the Society for Experimental Mechanics Series).