 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| << Previous article | Volume 55, Issue 2 / 2020 | Next article >> |
| Ahmed Nagaty, Ahmed Mehaney, and Arafa H. Aly, "Evolution of Low-Frequency Band Gaps Using X-Shapes and Single-Sided Stubbed Phononic Crystals," Mech. Solids. 55 (2), 292-300 (2020) |
| Year |
2020 |
Volume |
55 |
Number |
2 |
Pages |
292-300 |
| DOI |
10.3103/S0025654420020028 |
| Title |
Evolution of Low-Frequency Band Gaps Using X-Shapes and Single-Sided Stubbed Phononic Crystals |
| Author(s) |
Ahmed Nagaty (Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt)
Ahmed Mehaney (Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt, ahmed011236@science.bsu.edu.eg)
Arafa H. Aly (Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt) |
| Abstract |
In this work, the evolution of dispersion relations of 2D asymmetric phononic crystals in the low-frequency range is introduced and discussed. Two phononic crystal structures are proposed and calculated using Finite Element method. The first one is a thin plate from PDMS with a circular one-side stubbed from tungsten and the other is a thin plate in the X-shape from rubber and tungsten. The effects of some parameters such as stub height and diameter on the phononic band gap value are studied. Low-frequency band gaps can be found in both structures with frequencies corresponding to the audible sound frequency range. The symmetry and shape of the stub has a remarkable influence on the band structures. Where, the proposed one-side stubbed exhibits a phononic band gap in a lower frequency range compared with the published studies about the double side stubbed. Furthermore, with the same thickness value the band gap value was reduced in the X-shape phononic stub compared with the one-side stubbed. These results may be useful for the low-frequency and noise suppression devices. |
| Keywords |
phononic crystals, stubs, phononic band gap, dispersion relations, x-shape, unit cell |
| Received |
20 August 2019 | Revised |
30 August 2019 | Accepted |
18 September 2019 |
| Link to Fulltext |
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