多参数控制下船舶舱室噪声预报与评估

Prediction and assessment of ship cabin noise under the multiparameter control

本文利用统计能量法,完成多参数控制下某船模型的舱室噪声预报与分析研究。采用三段式舱室噪声预报方案,研究激励载荷施加、船体板结构、声腔子系统以及舾装敷设4种变量对船体模型各部分舱室噪声的影响,并与实船结果对比分析,得出结论:全船各部分舱室噪声计算结果平均值与实船结果平均测量值十分接近,相差约0.3 dB,符合误差范围要求,选取的方案合理可行。本文对进一步提高船舶舱室噪声预报的针对性和准确性具有工程意义,也为船舶设计优化和降低成本提供科学依据。

In this paper,the statistical energy analysis method is used to study the forecast and analysis of the noise problems in the study of a ship model's cabins in multiple parameters.The ship model is divided into three parts,and this paper studies four parameters on the cabin noise of the hull model,include:load application,hull plate structure(reinforced),the forms of acoustic cavity's subsystem and laying outfitting,and then conduct a comparative analysis with the cabin noise results of actual cruising condition,drawing the conclusion:The average value of the noise calculation results under the multi-parameter scheme is very close to the average measurement value of actual ship in the cruising state.The difference is about 0.3 dB,within the margin of error.Therefore,the scheme is reasonable and feasible.This paper has engineering significance for further improving the pertinence and accuracy of ship cabin noise prediction,and also provides scientific basis for ship design optimization and cost reduction.