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Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures
Joint Authors
Olunloyo, Vincent O. S.
Damisa, O.
Osheku, Charles A.
Akano, Theddeus T.
Source
Advances in Acoustics and Vibration
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-03-11
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The effect of structural vibration on the propagation of acoustic pressure waves through a cantilevered 3-D laminated beam-plate enclosure is investigated analytically.
For this problem, a set of well-posed partial differential equations governing the vibroacoustic wave interaction phenomenon are formulated and matched for the various vibrating boundary surfaces.
By employing integral transforms, a closed form analytical expression is computed suitable for vibroacoustic modeling, design analysis, and general aerospace defensive applications.
The closed-form expression takes the form of a kernel of polynomials for acoustic pressure waves showing the influence of linear interface pressure variation across the axes of vibrating boundary surfaces.
Simulated results demonstrate how the mode shapes and the associated natural frequencies can be easily computed.
It is shown in this paper that acoustic pressure waves propagation are dynamically stable through laminated enclosures with progressive decrement in interfacial pressure distribution under the influence of high excitation frequencies irrespective of whether the induced flow is subsonic, sonic , supersonic, or hypersonic.
Hence, in practice, dynamic stability of hypersonic aircrafts or jet airplanes can be further enhanced by replacing their noise transmission systems with laminated enclosures.
American Psychological Association (APA)
Osheku, Charles A.& Olunloyo, Vincent O. S.& Damisa, O.& Akano, Theddeus T.. 2010. Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures. Advances in Acoustics and Vibration،Vol. 2009, no. 2009, pp.1-14.
https://search.emarefa.net/detail/BIM-503500
Modern Language Association (MLA)
Osheku, Charles A.…[et al.]. Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures. Advances in Acoustics and Vibration No. 2009 (2009), pp.1-14.
https://search.emarefa.net/detail/BIM-503500
American Medical Association (AMA)
Osheku, Charles A.& Olunloyo, Vincent O. S.& Damisa, O.& Akano, Theddeus T.. Acoustic Pressure Waves in Vibrating 3-D Laminated Beam-Plate Enclosures. Advances in Acoustics and Vibration. 2010. Vol. 2009, no. 2009, pp.1-14.
https://search.emarefa.net/detail/BIM-503500
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-503500