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本文对船舶单层围护结构的传统隔声计算方法提出异议,对尚未妥善解决的问题进行了探讨。用1～8mm厚的钢板对45台不同类型的船用柴油机作了隔声量计算,统计分析了不同的噪声源频谱特性对隔声效果的影响,回归出有吻合效应及无吻合效应场合计算构件隔声最的实用公式(单值表示)。大量计算表明:文献[1]、[2]的计算公式及TL500值在工程设计上的计算误差较大。计算亦表明:本文提出的计算公式对铝板、胶合板和玻璃等船用材料亦是适用的。文章最后举以实例说明公式的应用。
This paper disagrees with the traditional method of sound insulation calculation for the single-story envelopment of ships and probes into the problems that have not been properly solved. Using 1 ~ 8mm thick steel plate for 45 different types of marine diesel engine noise calculation, statistical analysis of the different noise source spectral characteristics of the impact of sound insulation, regression with anastomosis and non-coincident effect calculation of components Sound the most practical formula (single value). A large number of calculations show that: [1], [2] calculation formula and TL500 value in engineering design calculation error is larger. The calculation also shows that the calculation formula proposed in this paper is also applicable to marine materials such as aluminum, plywood and glass. Finally, the article gives an example to illustrate the application of the formula.