在双壳舷间结构声传递途径试验分析基础上，提出了阻振质量复合托板结构。通过典型双壳动力舱段振动及声辐射数值试验，分析了阻振质量截面参数、布置位置对刚性复合托板隔振性能的影响规律。通过开展大尺度舱段模型的振动特性试验，验证振质量复合托板的有效性。结果表明：阻振质量复合托板显著降低了舱段中高频的振动及声辐射，非耐压壳体20-4000Hz频段振动加速度级平均降低3dB以上。

Abstract：Based on the experimental investigation of structure-borne sound transmission through double cylindrical shell, the blocking mass composite brace structure is summed up. The influences of blocking mass cross-section size and layout location to composite brace structure’s isolation performance are discussed through the vibration and sound radiation numerical experiment of power cabin. Vibration test of large scale power cabin modal is carried out in order to verify the vibration isolation performance of blocking mass composite brace. The result shows that the power cabin’s vibration and sound radiation is obviously reduced by blocking mass composite brace in middle and high frequency, the outer shell’s vibration acceleration level is reduced more than 3dB.