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Free vibration analysis of rotating laminated cylindrical shells under different boundary conditions using a combination of the layerwise theory and wave propagation approach

Ramezani, S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. Publisher: 2009
  3. Abstract:
  4. In this paper, vibration analysis of rotating laminated composite cylindrical shells using a combination of the layerwise theory and wave propagation approach is investigated. This combination enables us to study all the conventional boundary conditions in our analysis. Results obtained have been compared with those available in the literature and a good agreement has been observed. In contrast to the Equivalent Single Layer theories (ESL), the layerwise theory is constructed on the basis ofC°- continuity through the laminate thickness. For the surface of the shell, a displacement field based on the wave propagation approach is proposed. The effect of Coriolis and centrifugal accelerations on the circumferential and longitudinal modes is investigated. At high rotational speeds, the stationary frequency is smaller than both the forward and backward frequencies and this difference increases with the increase of rotational speed. The influence of boundary conditions on the frequencies is more significant at lower circumferential modes but at higher modes the effect of the boundary condition is infinitesimal.© Sharif University of Technology, April 2009
  5. Keywords:
  6. Layerwise theory ; Rotating laminated cylindrical shells ; Centrifugal acceleration ; Circumferential modes ; Composite cylindrical shell ; Coriolis ; Different boundary condition ; Displacement field ; Equivalent single layers ; Free-vibration analysis ; High rotational speed ; Higher mode ; Laminate thickness ; Laminated cylindrical shells ; Layerwise theory ; Longitudinal modes ; Rotational speed ; Boundary conditions ; Centrifugation ; Laminated composites ; Laminating ; Rotation ; Vibration analysis ; Shells (structures) ; Boundary condition ; Composite ; Coriolis force ; Structural component ; Vibration ; Wave propagation
  7. Source: Scientia Iranica ; Volume 16, Issue 2 B , 2009 , Pages 168-176 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_3001.html