用于高频声辐射计算的能量源波叠加方法

应用科学学报

用于高频声辐射计算的能量源波叠加方法

陈剑 1；2, 高煜 1, 许滨 2, 程昊 2, 毕传兴 2

1. 合肥工业大学噪声振动工程研究所, 安徽合肥 230009; 2. 安徽省汽车NVH与可靠性重点实验室, 合肥 230009

收稿日期:2008-06-20 修回日期:2008-09-08 出版日期:2008-12-10 发布日期:2008-12-10
通信作者: 陈剑

Energy Source Wave Superposition for Computation of High-Frequency Sound Radiation

CHEN Jian 1；2, GAO Yu 1; XU Bin 2; CHENG Hao 2; BI Chuan-xing 2

1. Institution of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China; 2. Automotive NVH Engineering and Technology Research Center Anhui Province, Hefei 230009, China

Received:2008-06-20 Revised:2008-09-08 Online:2008-12-10 Published:2008-12-10
Contact: Chen Jian

摘要/Abstract

摘要： 提出一种计算三维结构高频声辐射的能量源波叠加方法, 在声源结构内部放置若干简单能量虚源, 通过建立虚源与结构表面法向声强相匹配的传递矩阵, 得出源的强度. 再利用声能量传递函数,计算出空间任意场点的声能量,避免了能量边界元法繁杂的网格划分和积分运算,在计算高频声辐射时更具优越性. 数值计算验证了该方法的正确性和有效性.

关键词: 高频声场, 声辐射, 能量源波叠加方法

Abstract: An energy source wave superposition method for calculating sound radiation from a vibrating structure at high frequency is proposed. Strength of virtual energy sources inside the acoustic source is obtained from acoustic intensity along the normal of the surface. With a matching energy transmission matrix, acoustic energy in the sound field can easily be calculated. The energy wave superposition method is a fast and accurate method which can avoid complicated meshing and integral evaluation involved in the energy boundary element method (EBEM). The validity and effectiveness is verified in the numerical simulation.

Key words: high-frequency sound field, sound radiation, energy source wave superposition

中图分类号:

TB532

陈剑;高煜;许滨;程昊;毕传兴 . 用于高频声辐射计算的能量源波叠加方法[J]. 应用科学学报.

CHEN Jian;GAO Yu;XU Bin;CHENG Hao;BI Chuan-xing . Energy Source Wave Superposition for Computation of High-Frequency Sound Radiation[J]. Journal of Applied Sciences.