一种混合激励下的舱室结构水下辐射噪声预报方法
By configuring acoustic monitoring points inside the ship's cabins and combining the OTPA and wave superposition methods, accurate prediction of underwater radiated noise from the cabin structure was achieved. This solved the problems of large prediction errors and limitations in traditional methods, and improved prediction accuracy and application scope.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN ENG UNIV
- Filing Date
- 2023-11-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot effectively monitor and predict underwater radiated noise caused by air noise in ship cabins. Traditional methods have large prediction errors in the mid-to-high frequency bands and cannot predict noise at any far-field location of the cabin structure.
By configuring acoustic monitoring points inside the cabin and combining operational transfer path analysis (OTPA) and wave superposition method, the transfer function is obtained through synchronous monitoring of vibration and sound. Decoupling processing and equivalent source strength solution are then performed to achieve accurate prediction of underwater radiated noise of the cabin structure.
It improves the accuracy of underwater radiated noise prediction for cabin structures, especially in the mid-to-low frequency band, making up for the limitations of traditional methods and enabling noise prediction at any location in the far field.
Smart Images
Figure CN117606611B_ABST