کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277704 1430239 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In-plane elastic wave propagation and band-gaps in layered functionally graded phononic crystals
ترجمه فارسی عنوان
انتشار موج انعطاف پذیر در هواپیما و شکاف باند در بلورهای فونونی درجه بندی شده لایه بندی شده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

In-plane wave propagation in layered phononic crystals composed of functionally graded interlayers arisen from the solid diffusion of homogeneous isotropic materials of the crystal is considered. Wave transmission and band-gaps due to the material gradation and incident wave-field are investigated. A classification of band-gaps in layered phononic crystals is proposed. The classification relies on the analysis of the eigenvalues of the transfer matrix for a unit-cell and the asymptotics derived for the transmission coefficient. Two kinds of band-gaps, where the transmission coefficient decays exponentially with the number of unit-cells are specified. The so-called low transmission pass-bands are introduced in order to identify frequency ranges, in which the transmission is sufficiently low for engineering applications, but it does not tend to zero exponentially as the number of unit-cells tends to infinity. A polyvalent analysis of the geometrical and physical parameters on band-gaps is presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 51, Issue 13, 15 June 2014, Pages 2491–2503
نویسندگان
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