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Sound Attenuation of Membranes Loaded with Square Frame-Shaped Masses
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This study examines sound transmission of thin membranes with square frame-shaped masses.
Numerical results indicate that multiple transmission loss peaks can be generated by adding more frame mass inclusions.
The number and the location of the peaks are controlled by the number of frames, the frame distribution, and the frame width.
Near the transmission loss peak frequencies, the dynamic effective mass density turns from positive to negative.
The validity of the present model has been verified by comparing the analytical results with FE results.
Two types of cell arrangements are also considered in this study, namely, cells in series and cells in array.
It is seen that either the stacked or array configurations can produce better sound attenuation than single-celled structures.
Moreover, the frequency band where sound wave is blocked can be broadened by stacking more layers with different mass magnitudes.
Furthermore, additional frequency bands due to the periodicity of the structure are found in the stacked configurations.
American Psychological Association (APA)
Chen, J. S.& Kao, D. W.. 2016. Sound Attenuation of Membranes Loaded with Square Frame-Shaped Masses. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1111787
Modern Language Association (MLA)
Chen, J. S.& Kao, D. W.. Sound Attenuation of Membranes Loaded with Square Frame-Shaped Masses. Mathematical Problems in Engineering No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1111787
American Medical Association (AMA)
Chen, J. S.& Kao, D. W.. Sound Attenuation of Membranes Loaded with Square Frame-Shaped Masses. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1111787
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111787