甲板运输船舱室噪声预报与控制

Prediction and Control of Cabin Noise of Deck Carrier

为解决甲板运输船这类工程船舶舱室噪声比较大的问题,基于统计能量分析(SEA)法,建立某3000t甲板运输船的SEA模型,进行上层建筑舱室噪声预测,并与实测值进行比较,验证仿真结果可信性.分析主要激励源对舱室噪声的影响大小,发现舱室噪声受结构声和空气声影响都比较大,其中主副机是最主要激励源.由此提出相应的降噪措施,并利用软件进行降噪仿真研究,从而选择有效而经济的方案.

In order to solve the problem of high cabin noise of engineering ships such as deck transport ships, based on statistical energy analysis (SEA) method, a SEA model of a 3,000-ton deck transport ship was established to predict the cabin noise of superstructure, and the simulation results were compared with the measured values to verify the credibility of the simulation results. By analyzing the influence of main excitation sources on cabin noise, it is found that cabin noise is greatly influenced by structural sound and air sound, of which main and auxiliary engines are the most important excitation sources. Therefore, the corresponding noise reduction measures were put forward, and noise reduction simulation research was carried out by using software, so as to select an effective and economical scheme.