Shock and Vibration

Shock and Vibration / 2006 / Article

Open Access

Volume 13 |Article ID 828367 |

Abdelkhalak El Hami, Dan Borza, José Eduardo Souza de Cursi, "Vibroacoustic Analysis of Cyclic Structures by Using Dof’s Size Reduction and Holographic Measurements", Shock and Vibration, vol. 13, Article ID 828367, 12 pages, 2006.

Vibroacoustic Analysis of Cyclic Structures by Using Dof’s Size Reduction and Holographic Measurements

Received19 Jul 2006
Revised19 Jul 2006


We propose a method for the vibroacoustic analysis of structures having symmetry properties. This method is based on the reduction of the number of the degrees of freedom involved (size reduction) and the use of experimental data (confrontation numerical/experimental). We propose the extension of the method of the linear representations of finite symmetry groups to problems of coupling fluid-structure. This approach, while keeping the quality of the approximations, leads to a significant reduction of the number of degrees of freedom, with a maximal reduction for the so called repetitive structures. Finally, we present a practical case of modal analysis – in air and water – of a ship propeller formed by 3 stainless steel blades. The experimental results are obtained by using the whole-field, non-contact technique of electronic holography.

Copyright © 2006 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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