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Advances in Aircraft and Spacecraft Science Volume 3, Number 3, July 2016 , pages 299-315 DOI: https://doi.org/10.12989/aas.2016.3.3.299 |
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On the use of the wave finite element method for passive vibration control of periodic structures |
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Priscilla B. Silva, Jean-Mathieu Mencik and José R. F. Arruda
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| Abstract | ||
| In this work, a strategy for passive vibration control of periodic structures is proposed which involves adding a periodic array of simple resonant devices for creating band gaps. It is shown that such band gaps can be generated at low frequencies as opposed to the well known Bragg scattering effects when the wavelengths have to meet the length of the elementary cell of a periodic structure. For computational purposes, the wave finite element (WFE) method is investigated, which provides a straightforward and fast numerical means for identifying band gaps through the analysis of dispersion curves. Also, the WFE method constitutes an efficient and fast numerical means for analyzing the impact of band gaps in the attenuation of the frequency response functions of periodic structures. In order to highlight the relevance of the proposed approach, numerical experiments are carried out on a 1D academic rod and a 3D aircraft fuselage-like structure. | ||
| Key Words | ||
| wave finite element method; periodic structures; band gaps; passive vibration control; aircraft fuselage | ||
| Address | ||
| Priscilla B. Silva and José R. F. Arruda : Departamento de Mecânica Computacional, Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, R. Mendeleyev, 200, 13083-860, Campinas-SP, Brazil Jean-Mathieu Mencik : INSA Centre Val de Loire, Université François Rabelais de Tours, LMR EA 2640, Campus de Blois, 3 rue de la chocolaterie, CS 23410, 41034 Blois Cedex, France | ||
