声呐平台自噪声特性及降噪措施优化研究  

Research on Self-noise Characteristic of Sonar Platform and Its Optimization

作　　者：王毅娜[1] 庞福振[1,2] 苏楠[1] 姚熊亮[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院 [2]中国人民解放军92857部队

出　　处：《船海工程》2014年第6期44-47,共4页Ship & Ocean Engineering

基　　金：国家自然科学基金项目(51209052);黑龙江省青基金资助项目(QC2011C013);哈尔滨市科技创新人才研究专项资金项目(2011RFQXG021);上海交通大学海洋工程国家重点实验室基金(1307);工信部高技术船舶项目;中央高校基本科研业务费(HEUCF40117)

摘　　要：基于统计能量法,建立声呐平台统计能量计算分析模型,讨论某舰船机械载荷与水动力载荷对于声呐平台自噪声特性的影响,得到主要噪声激励源及其分布,对声呐平台讨论采用三种不同形式的降噪措施,结果分析表明:机械载荷激励的位置不同,对声呐平台自噪声贡献量不同,离声呐换能舱室越近的机械载荷激励对声呐平台自噪声的贡献量越大;对比得到在声呐换能舱室加吸声尖劈并适当将材料损耗因子增大到0.002为声呐平台自噪声的最优降噪措施,在主传导路径上采取控制措施从而增大损耗因子得到的降噪效果最优。The statistical energy analysis （SEA） model of sonar platform is established to investigate the self-noise characteristic and optimization. The effect of mechanical and hydrodynamic load on the self-noise characteristic of sonar platform is analyzed to obtain the main noise excitation source and its distribution. The self-noise contribution of mechanical load for sonar platform is discussed with different load position to carry out the noise reduction optimization of sonar platform. Three different noise reduction measures are discussed. The study shows that the self-noise contribution of mechanical load is different with various load positions. The self-noise contribution of mechanical load, which is close to sonar energy exchange cabin, is larger than other conditions. Through the comparison analysis, the optimal sound reduction measure is obtained.

关 键 词：统计能量法(SEA) 自噪声 声呐平台 降噪措施 

分 类 号：U661[交通运输工程—船舶及航道工程]