International Journal of Ocean System Engineering

Korean Society of Ocean Engineers (한국해양공학회)
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An experimental study on the hydro-elastic analysis of a circular cylindrical shell

  • Min, Cheon-Hong (Department of Ocean Engineering, Korea Maritime University) ;
  • Park, Han-Il (Department of Ocean Engineering, Korea Maritime University) ;
  • Teng, Bin (State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology) ;
  • Kim, Byung-Mo (Department of Ocean Engineering, Korea Maritime University)
  • Received : 2010.12.17
  • Accepted : 2011.02.01
  • Published : 2011.03.02
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Abstract

Ocean structures and vehicles are exposed to severe ocean environment conditions such as waves, winds and currents. When such ocean structures and vehicles are designed, an accurate structure analysis is required to keep the system safely. Hydro-elastic analysis is one of key issues to design such structures and vehicles. In many previous investigations, numerical analyses for hydro-elastic problem have been used. In this study, an experimental analysis is carried out and the circular cylindrical shell is considered. Dynamical characteristics for a circular cylindrical shell are identified by experimental vibration analysis in air and water. The natural frequencies and mode shapes are compared in air and water to obtain hydro-elastic effects. Some interesting results are found in the variation of natural frequencies and damping ratios of the circular cylindrical shell for different water contact depths.

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References

  1. Chen, X, Wu, Y, Cui, W, and Tang, X (2003). “Nonlinear Hydroelastic Analysis of a Moored Floating Body”, Ocean Engineering, Vol 30, pp 965-1003. https://doi.org/10.1016/S0029-8018(02)00078-1
  2. Ohkusu, M, and Namba, Y (2004). “Hydroelastic Analysis of a Large Floating Structure”, Journal of Fluids and Structures, Vol 19, pp 543-555. https://doi.org/10.1016/j.jfluidstructs.2004.02.002
  3. Askari, E, and Daneshmand, F (2009). “Coupled Vibration of a Fluid-Filled Cylindrical Container with a Cylindrical Internal Body”, Journal of Fluids and Structures, Vol 25, pp 389-405. https://doi.org/10.1016/j.jfluidstructs.2008.07.003
  4. Sigrist, JF, and Garreau, S (2007). “Dynamic Analysis of Fluid-Structure Interaction Problems with Modal Methods using Pressure-based Fluid Finite Elements”, Finite Elements in Analysis and Design, Vol 43, pp 287-300 https://doi.org/10.1016/j.finel.2006.10.002
  5. Ugurlu, B, and Ergin, A (2008). “A Hydroelastic Investigation of Circular Cylindrical Shellscontaining Flowing Fluid with Different End Conditions”, Journal of Sound and Vibration, Vol 318, pp 1291-1312. https://doi.org/10.1016/j.jsv.2008.05.006
  6. Ewins, DJ (2000). “Modal Testing 2,” Research Studies Press Ltd.
  7. Min, CH, Park, HI, and Bae, SR (2008). “Experimental Vibration Analysis of Damped Beam Model Using Multi-degree Curve Fitting Method”, Journal of Ocean Engineering and Technology, KSOE, Korea, Vol 22, No 1, pp 70-74.
  8. Min, CH, Park, HI, Bae, SR, and Jeon, JJ (2009). “New Global Curve Fitting Method Using Frequency Response Function”, Journal of Ocean Engineering and Technology, KSOE, Korea, Vol 23, No 6, pp 82-86.