船舶辐射噪声声源匹配定量分析方法

Research on the sound source by radiated noise of ship match with quantitative analysis method

随着近年来对船舶噪声重视的增加,确定各噪声源在辐射噪声中的组成和贡献就变得格外重要。本文利用码头单机噪声试验确定单台设备噪声特征,通过拟合得到噪声特征表达式,利用单机组合测试数据,确定各个单机在辐射噪声中的组成比例,综合确定各噪声源在辐射噪声中的组成和贡献。阐述了数值拟合和声源匹配理论,给出了计算方法,结合测量数据进行了拟合及匹配计算。通过测量结果和匹配结果的比较,证明了本方法的可行性。

With attention of ship noise increased, the contribution and composition of identify noise sources in the radiated noise becomes especially important. The noise characteristics of single device is determined by single device noise testing, The expression of noise characteristics is obtained by fitting. The data of compose testing of single device is used to determine the scaling of every device, and the composition and contribution of every device is also determined in radiation noise by it. Numeric fitting and matching theory method is introduced, fitting and matching calculation is carried on using measurement data. Feasibility of this method is proved through comparison of measurement result and matching result.