【作者】 刘文章； 严斌； 吴文伟；

【Author】 LIU Wen-zhang;YAN Bin;WU Wen-wei;China Ship Scientific Research Center;

【机构】 中国船舶科学研究中心船舶振动噪声重点实验室；

【摘要】 针对水下工程中的复杂圆柱壳结构,应用基于波动理论的FE-SEA混合法进行了中频段辐射噪声的分析预测。首先解析了FE-SEA混合法的基础理论,建立了中频段声学分析的详细计算流程;对环肋双层圆柱壳模型,进行分析频段划分和子系统类型确定,利用FE-SEA混合法对其有效中频范围内的声辐射特性进行计算;通过与试验结果进行对比,证明了此方法进行复杂结构中频声辐射研究的准确性。更多还原

【Abstract】 For underwater complicated cylindrical shell,based on the hybrid FE-SEA method in wave theory,the sound radiation of mid-frequency is analyzed and predicted.The basic theory of the method is analyzed and so the detailed calculation process of mid-frequency noise is established.For ring-stiffened double cylindrical shell,the analysis frequencies range is divided and corresponding subsystems are determined.The sound radiation characteristics of Mid-frequency is calculated.And the calculation results are compared with the experimental results,which proves the feasibility of the hybrid FE-SEA method in solving the acoustic radiation of complicated structures.更多还原