Computational procedures for determining structural-acoustic response due to hydrodynamic sources

Assad A. Oberai; Farzam Roknaldin; Thomas J.R. Hughes

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Computational procedures for determining structural-acoustic response due to hydrodynamic sources

机译：确定由于水动力源引起的结构声响应的计算程序

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In this paper we propose a methodology for determining the structural-acoustic response due to hydro/aero-dynamic sources. Our methodology is based on solving a fluid problem in which the structure is treated as rigid and using the results of this calculation to solve a structural-acoustic problem. The two problems are coupled using Lighthill's acoustic analogy. The key feature of our meth- odology is the numerical solution of the structural-acoustic problem. For this purpose, we develop new variational formulations of Lighthill's acoustic analogy that may be solved using the finite element method. This allows us to consider flexible structures and acoustically non-compact sources in the acoustic calculation with relative ease. We present a preliminary calculation that illustrates the feasibility of our approach.

机译：在本文中，我们提出了一种确定由于水/空气动力源引起的结构声响应的方法。我们的方法基于解决将结构视为刚性的流体问题，并使用此计算结果来解决结构声学问题。使用Lighthill的声学比喻将两个问题联系在一起。我们方法的主要特征是结构声学问题的数值解。为此，我们开发了Lighthill声学类比的新变式公式，可以使用有限元方法解决。这使我们能够相对轻松地在声学计算中考虑柔性结构和声学非紧凑声源。我们提出了初步的计算结果，说明了我们方法的可行性。

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来源
《Computer Methods in Applied Mechanics and Engineering》 |2000年第4期|p.345-361|共17页
作者
Assad A. Oberai; Farzam Roknaldin; Thomas J.R. Hughes;
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作者单位

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类自动化基础理论;工程基础科学;
关键词
Aero-acoustics; Hydro-acoustics; Structural-acoustics;

机译：航空声学;水声;结构声学;

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Computational procedures for determining structural-acoustic response due to hydrodynamic sources

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