کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6753027 1430807 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of decoupling performance of underwater acoustic coating with cavities via equivalent fluid model
ترجمه فارسی عنوان
بهینه سازی عملکرد جداسازی پوشش آکوستیک زیر آب با حفره ها از طریق مدل مایع معادل
کلمات کلیدی
پوشش آکوستیک، جدا کردن، تابش صوتی زیر آب مدل مایع معادل،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Acoustic coatings with periodically arranged internal cavities have been successfully applied in submarines for the purpose of decoupling water from vibration of underwater structures, and thus reducing underwater sound radiation. Previous publications on decoupling acoustic coatings with cavities are mainly focused on the case of coatings with specific shaped cavities, including cylindrical and conical cavities. To explore better decoupling performance, an optimal design of acoustic coating with complex shaped cavities is attempted in this paper. An equivalent fluid model is proposed to characterize coatings with general axisymmetrical cavities. By employing the equivalent fluid model, an analytical vibroacoustic model is further developed for the prediction of sound radiation from an infinite plate covered with an equivalent fluid layer (as a replacement of original coating) and immersed in water. Numerical examples are provided to verify the equivalent fluid model. Based on a combining use of the analytical vibroacoustic model and a differential evolution algorithm, optimal designs for acoustic coatings with cavities are conducted. Numerical results demonstrate that the decoupling performance of acoustic coating can be significantly improved by employing special axisymmetrical cavities as compared to traditional cylindrical cavities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 426, 21 July 2018, Pages 244-257
نویسندگان
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