鱼雷结构振动与声辐射的统计能量分析

Statistical energy analysis on structure vibration and sound radiation from torpedo

针对鱼雷壳体振动引起的辐射水声将直接影响到鱼雷的声隐身性能,且其振动还会传递至声换能器基阵,影响声换能器的正常工作,从而影响鱼雷的自导精度和距离的问题,对鱼雷壳体的中、高频振动和声辐射问题,应用统计能量分析法建立了水下鱼雷壳体的统计能量分析模型,结合算例研究了鱼雷壳体的振动与声辐射特性,得出了有用的结论.事实表明,该方法能有效地应用在鱼雷壳体结构的振动与声辐射特性分析上,具有较强的工程适用性和可操作性.

Acoustics design plays an important place in the design of torpedo. The structure vibration and sound radiation have great influence to the effectiveness of torpedo. The characteristics of structure vibration and sound radiation from torpedo were studied, and schemes to control the vibration and radiated noise were found. A simplified model of torpedo was set up and the numerical simulation was carried out. The radiated noise was predicted using the statistical energy analysis method. Several conclusions were obtained in the exploration of the way to reduce the vibration and noise.