关键词: 振动与波, 刚性阻振质量, 舱壁, 阻抗失配, 高传递损失, 优化设计

Abstract:

Based on wave theory, the characteristics of rigid vibration isolation mass in impeding vibration wave propagation were studied and the influence of wave incident angle as well as sectional dimensions of isolation mass on its isolation performance was discussed. Furthermore, typical ship bulkhead with high transmission loss was presented with the introduction of rigid vibration isolation mass loop and rigid vibration isolation mass serration from the perspective of impedance mismatch. Finally, optimal design of isolation characteristics of typical ship bulkhead with high transmission loss was carried out through dynamic optimization method. The results indicate that the vibration of the power cabin is effectively reduced after optimization and the vibration propagation to the adjacent cabin is significantly impeded by optimal bulkhead obtained.