The approach used tocalculate the normal velocity of vibrating structure surface and sound pressure isprovide, and a near-field approach is used to obtain the sound power output of avibrating body.

• (2)分别采用振动模态和声辐射模态方法对结构声辐射进行分析，给出了结构表面法向速度、声场声压分布以及声功率近场计算的求解方法；