【摘要】 采用统计能量分析方法 ( SEA) ,通过一定的简化 ,建立了出海管路系统声传播和管口声辐射的简单 SEA理论模型 ,分析了在平稳随机噪声激励下通海管路系统各组成结构的能量分布和管口声辐射功率 ,并研究和对比了不同管道几何参数情况下的管口辐射噪声 .实验结果与其他数值分析方法所得结果较为吻合 .SEA为各种声学参数的计算提供了一条较为可靠和高效的途径更多还原

【Abstract】 The statistical energy analysis (SEA) was used to determine the radiation power of a finite cylindrical pipe. The model is a finite water filled pipe open to water in one termination. The acoustical radiation from the open end is due to transmission of the acoustical and vibrational energy through piping. For effecting noise control and vibration reduction, it is of importance to predict the distribution of vibration energy in shells. And, attention should be paid to noise radiation at the termination opening into the water. The energy interaction and acoustic radiation in the water filled piping model was studied. Factors are concerned about the difference of radiation efficiency. Compared with another method, the experimental result is good. And SEA is robust and more efficient.更多还原