کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6778785 1432083 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research on the low frequency band gap properties of periodically composite stiffened thin-plate with fillers
ترجمه فارسی عنوان
تحقیقات در خصوص خواص شکاف باند فرکانس پایین دوره ای کامپوزیتی سخت شده ورق نازک با پرکننده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this paper, a new composite stiffened thin-plate (CSTP) is developed, the filler is distributed periodically in the viscoelastic damping material (VDM), and the simplified-super-finite-element (SSFM) is employed in the analysis. According to the periodical properties of the CSTP, a primitive cell is extracted, which is divided into six parts according to n-order Lagrangian element (LgE). After each parts' mass, stiffness and damping matrices are obtained, the global matrices are assembled by standard direct stiffness method (SDSM). The filler's mass is considered as lump mass loaded on the defined LgE's nodes, and the filler's number is determined by the LgE's order. Then, the element matrices are simplified and compressed by Bloch's theorem. Finally, the band gap properties of the CSTP are determined according to the eigenvalues problems, and the parameters of the structures (such as the filler's mass, the VDM's damping ratio and the lattice constant, etc.) which affect the band gaps are examined thoroughly. The results show the existence of full band gap (FBG) in low frequency. Meanwhile, the results are validated by the finite element method (FEM), which show good consistency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 108, November 2016, Pages 41-55
نویسندگان
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