谱相关技术及其在潜艇结构振动信号传递特性分析中的应用

由于潜艇结构的复杂性,有限元方法和时域相关方法在分析结构振动信号传递特性时精度欠佳。针对上述问题,提出了定量分析结构振动信号传递特性的谱相关技术,该技术通过结构两侧振动信号分析结构对振动信号组成成分的影响,避免了有限元精确建模困难与振动信号通过复杂结构时波形失真较大的难题。将该技术应用于潜艇缩比模型不同结构振动信号传递特性分析中,定量分析结果表明该技术能很好地分析不同结构的振动信号传递特性。

Spectral correlation technique and its application in analyzing vibration signals' transfer characteristics of submarine structures

Due to the complexity of submarine structures, it has low accuracy for finite element analysis method and time domain correlation method to analyze the vibration signals’ transfer characteristics of structures. Aiming at these problems, a spectral correlation technique is proposed to quantitatively analyze transfer characteristics of structures. And it analyzes the influence on signal components by structures according to the vibration signals from two sides of structures, and avoids the difficulty of accurate finite element modeling and waveform distortion when vibration signals go through the complex structures. The proposed method is applied to analyze the transfer characteristics of a scaled submarine model’s different structures, and quantitative analysis results show that it can analyze the vibration signals’ transfer characteristics of different structures very well.