| 摘要:以C++和Matlab语言为平台,通过调用其它商业软件求解器,开发了激励源数据库和水下声辐射预报软件。根据船舶主要激励源设备型号和工况等在数据库中选择激励参数,连同船体模型文件导入到振动响应计算软件中,根据需要改变结构和计算参数得到船体外板的振动速度文件。将船体外板模型文件及速度文件导入到船体结构噪声计算软件中,得到低频噪声；根据螺旋桨的几何参数及工况得到螺旋桨的中高频噪声。最后,将低频和中高频噪声通过公式叠加,得到总的水下噪声值。 |
| 关键词: 水下声辐射 振动响应 结构噪声 螺旋桨噪声 |
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| Software Development for the Underwater Noise Prediction of the Ship |
| Ye Linchang,Tong Zongpeng,Wang Jue |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 200090 |
| Abstract:With the C++ and Matlab language as the platform, by transferring some other commercial software Solver,the excitation database and underwater noise radiation prediction software were developed. The excitation parameters were chosen according to the principle sources equipment types and the operation conditions of the ship, and was imported into the vibration response analysis software together with the ship model file. The vibration velocity files of the outside shell of the hull were gained by changing the structure and computation parameters according to requirements. The model file of the outside shell of the hull and the velocity file were imported into the ship structure-borne noise computation software, and the low frequency sound values were received; the middle and high frequency sound value were received based on the geometry parameters of the propeller and the operation conditions. Finally the total sound values were obtained by coupling the low frequency sound with the middle and high frequency sound. |
| Key words: underwater radiate noise vibration response structure-borne noise propeller noise〖FL |
