کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6756430 509572 2015 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal rigid and porous material distributions for noise barrier by acoustic topology optimization
ترجمه فارسی عنوان
توزیع مواد بهینه سفت و متخلخل برای مانع سر و صدا با بهینه سازی توپولوژی آکوستیک
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This research applies acoustic topology optimization (ATO) for noise barrier design with rigid and porous materials. Many researchers have investigated the pressure attenuation phenomena of noise barriers under various geometric, material, and boundary conditions. To improve the pressure attenuation performance of noise barriers, size and shape optimization have been applied, and ATO methods have been proposed that allow concurrent size, shape, and topological changes of rigid walls and cavities. Nevertheless, it is unusual to optimize the topologies of noise barriers by considering the pressure attenuation effect of a porous material. The present research develops a new ATO considering both porous and rigid materials and applies it to the discovery of optimal topologies of noise barriers composed of both materials. In the present approach, the noise absorption characteristics of porous materials are numerically modeled using the Delany-Bazley empirical material model, and we also investigate the effects of some interpolation functions on optimal material distributions. Applying the present ATO approach, we found some novel noise barriers optimized for various geometric and environmental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 339, 17 March 2015, Pages 123-142
نویسندگان
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