Arbitrary Angle Waveguide Bends Made of a New Heterostructure Phononic Crystal

Journal of Solid Mechanics

مقاله 7، دوره 15، شماره 2، شهریور 2023، صفحه 217-224   

نوع مقاله: Research Paper

شناسه دیجیتال (DOI): 10.22034/jsm.2023.1968737.1752

نویسندگان

M Bagherinouri^{* 1}؛ M Moradi²

¹Faculty of Engineering, Arak University, Arak, Iran

²Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran

چکیده

In this paper, an arbitrary angle waveguide bend made of a new heterostructure phononic crystal has been studied. By creation of line defects in the proposed heterostructure which is composed of square and rhombus phononic crystals, a simple structure waveguide bend with arbitrary angles is made. Analyzing the proposed bend showed that by creating line defects in the composition of the square and equilateral triangle lattices, 30˚ waveguide bend can be realized. Also the study showed that by creating line defects in the composition of the square and rhombus lattices, 40˚ (20˚) waveguide bend could be obtained if the angular constant of the rhombus lattice is 80˚ (40˚). The 40˚ and 20˚ waveguide bends have a narrow pass band which can be utilized as a filter to separate a specific frequency and guide it along a defined pass. Also the study shows that by incorporation of 90˚ bend within the presented heterostructure bends, waveguide bends can be realized that guide elastic waves in the arbitrary angles greater than 90˚.

کلیدواژه‌ها

Phononic crystal؛ Arbitrary angle waveguide bends؛ Heterostructure

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