用于高频声辐射计算的能量源波叠加方法  

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

作　　者：陈剑[1,2] 高煜[1] 许滨[2] 程昊[2] 毕传兴[2] 

机构地区：[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工程技术研究中心,安徽合肥230009

出　　处：《应用科学学报》2008年第6期613-617,共5页Journal of Applied Sciences

基　　金：国家“863”高技术研究发展计划项目(No.2006AA110101);安徽省科技攻关计划重大科技专项(No.08010202011;No.08010201002)资助项目

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.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.

关 键 词：高频声场 声辐射 能量源波叠加方法 

分 类 号：TB532[理学—物理]