کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
510122 865743 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Level set based topology optimization of vibrating structures for coupled acoustic–structural dynamics
ترجمه فارسی عنوان
بهینه سازی توپولوژی مبتنی بر سطح ساختارهای ارتعاشی برای پویایی ساختاری آکوستیک
کلمات کلیدی
بهینه سازی توپولوژی، روش تعیین سطح، سیستم ساختاری آکوستیک همراه، کاهش سر و صدا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی


• A level set based topology optimization for coupled structural-acoustic structures.
• A sensitivity analysis with respect to the structural boundary variations.
• Numerical algorithm using material derivative and the adjoint method.
• Examples of optimal structures of the coupled structural-acoustic system with smooth boundary.

A level set based structural topology optimization method is proposed for the optimal design of coupled structural–acoustic system with a focus on interior noise reduction. The objective is to consider an optimum structure with an optimum interface between the structural and acoustic domains, for minimizing the acoustic response of the coupled system at specified points or surfaces inside the acoustic domain within a frequency range of interest, subject to the given amount of the material of the structure. A sensitivity analysis with respect to the structural boundary variations is carried out using material derivative and the adjoint method, while the standard finite element method is employed for solving the state equation and the adjoint equation. The optimal structure of the coupled structural–acoustic system with smooth boundary is obtained through the level set evolution, while the velocity field is derived from the sensitivity analysis and the optimization algorithm. A number of numerical examples are presented to demonstrate the feasibility and effectiveness of the proposed approach for the noise reduction purpose.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 132, February 2014, Pages 34–42
نویسندگان
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