| 用于高频声辐射计算的能量源波叠加方法 |
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| 引用本文： | 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,2008,26(6):613. |
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| 作者姓名： | 陈剑 高煜 许滨 程昊 毕传兴 |
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| 作者单位： | 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; |
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| 基金项目： | 国家"863"高技术研究发展计划
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安徽省科技攻关计划重大科技专项
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| 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.
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| 关 键 词： | 高频声场 声辐射 能量源波叠加方法 |
| 收稿时间： | 2008-06-20 |
| 修稿时间： | 2008-09-08 |
Energy Source Wave Superposition for Computation of High-Frequency Sound Radiation |
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| 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,2008,26(6):613. |
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| Authors: | CHEN Jian GAO Yu XU Bin CHENG Hao BI Chuan-xing |
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| Institution: | 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 |
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| 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. |
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| Keywords: | high-frequency sound field sound radiation energy source wave superposition |
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