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舱室降噪目前在船舶上较多的是采用被动方法,该法是切断或阻碍噪声的传播通道,如将声源(如主、辅机等)布置在减振器上,或在声源周围的结构上敷置阻尼材料,以此切断或阻碍声源产生的结构噪声向外传播扩散.阻尼材料一般指粘弹性材料,其内损耗、内摩擦较大,声波经过此材料(或结构)能量大量损耗.目前中小型船舶,其主机布置在减震器上或减震器加阻尼措施,可望取得较好的效果.
Cabin noise reduction Currently on the ship more is the passive method, the law is to cut off or impede the propagation of noise channels, such as the sound source (such as the main and auxiliary machines, etc.) arranged in the shock absorber, or around the sound source Of the structure of damping material, in order to cut off or obstruct the structure of the sound source to spread out the structure of noise.Damping material generally refers to the viscoelastic material, the internal loss, internal friction larger sound waves through the material (or structure) a large number of energy At present, small and medium-sized ships, the host layout of the shock absorber or shock absorber plus damping measures, is expected to achieve better results.