机舱平台附近居住舱室自噪声特性分析

基于统计能量法,建立某型船全船舱室统计能量法计算分析模型,分析振动激励源和空气激励源对于机舱平台附近居住舱室噪声特性的影响,得到了主要的噪声激励源及其分布位置,并讨论了不同位置的激励源对机舱附近居住舱室噪声的贡献量大小。研究结果表明:不同位置的振动激励源对机舱平台附近居住舱舱室噪声贡献量也不一样,离考核舱室越近的振动激励源对其舱室噪声的贡献量越大,通过对比降噪方案,得到一种机舱平台附近居住舱室噪声最优化的减振降噪方法。

Research on Self-noise Characteristic of Accommodations near Machinery Spaces

Based on the method of statistical energy analysis （SEA）, the calculation model of a certain ship was established to research the self-noise characteristic and optimization of the accommodations near machinery space , and the influence of vibra-tion-stimulated and air-stimulated load on self-noise characteristic of the accommodations near machinery space .The main load excitation and its distribution were determined .The results showed that the different locations of vibration-stimulated have differ-ent contribution to the sound level of the accommodation .The load excitation closed to the machinery spaces has great influence on the self-noise characteristic of the accommodation .Comparison with results of the above three measurements , the best meas-urement for the single cabin sound characteristic optimization was obtained .