کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6953529 1451820 2019 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design multi-stopband laminate acoustic metamaterials for structural-acoustic coupled system
ترجمه فارسی عنوان
مواد متالورژی آکوستیک چند لایه برای ساختارهای آکوستیک متصل شده
کلمات کلیدی
متامومات های آکوستیک ورقه ورقه، توقف باند، سازه-آکوستیک سیستم متصل، رزونانس محلی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
This paper designs the laminate acoustic metamaterials with multi-stopband for structural-acoustic coupled system. The laminate acoustic metamaterials are composed of carbon-fiber-reinforced polymer (CFRP) and a periodic array of two degrees of freedom (2-DOF) mass-spring-damper subsystems attached to the laminate. According to the dispersion analysis, two stopbands are observed around the absorbers' resonant frequency. Based on the finite element modeling, the multi-stopband behavior has been confirmed. In addition, the effects of damping of vibration absorbers are discussed in this work. By adding the appropriate damping to the vibration absorbers, the two stop bands can be combined into a wider stopband. Subsequently, the analyses of multi-stopband laminate acoustic metamaterials in the structural-acoustic coupled system are performed. The excellent performance of multi-stopband laminate acoustic metamaterials has been applied to the front panel of vehicle, and the noise of passenger compartment cavity is reduced significantly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 115, 15 January 2019, Pages 418-433
نویسندگان
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