The invention belongs to the field of helicopter structure fatigue design, and relates to an actually measured load and vibration correlation analysis method based on Fourier transform. The method comprises the following steps: in different flight states, establishing a corresponding relation between a vibration frequency domain amplitude and a load time domain amplitude by adopting known load time-frequency domain data and vibration time-frequency domain data of a scientific research machine; according to the established corresponding relation, carrying out load inversion on the in-service aircraft in a corresponding flight state; the in-service aircraft and the scientific research aircraft are aircrafts of the same model.
本发明属于直升机结构疲劳设计领域,涉及一种基于傅里叶变换的实测载荷与振动相关性分析方法。该方法包括:在不同的飞行状态下,采用科研机已知的载荷时频域数据和振动时频域数据,建立振动频域幅值与载荷时域幅值的对应关系;根据建立的对应关系,对在役机进行对应飞行状态下的载荷反演;在役机和科研机为同型号飞机。
Fourier transform-based measured load and vibration correlation analysis method
一种基于傅里叶变换的实测载荷与振动相关性分析方法
2025-03-21
Patent
Electronic Resource
Chinese
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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