The invention discloses a resonance interaction analysis method of an aircraft fluid conveying pipe under forced vibration, and belongs to the technical field of aircraft fluid conveying pipe structure dynamics. The method comprises the following steps of: firstly, establishing an aircraft fluid conveying pipe structure model which comprises a displacement field model and a nonlinear geometrical relationship model; then establishing a resonance dynamic model of the aircraft fluid conveying pipe under forced vibration, wherein the resonance dynamic model is represented by generalized displacement; based on a secondary perturbation method, a resonance behavior approximate solution of the aircraft fluid conveying pipe under forced vibration is developed; and finally, carrying out influence analysis on combined resonance interaction, and establishing a resonance characteristic database of the aircraft fluid conveying pipe, so that the resonance characteristics of the aircraft fluid conveying pipe are comprehensively evaluated and effectively utilized. The analysis method provided by the invention can be applied to resonance interaction analysis of the flow conveying pipe of the aircraft under various types of forced vibration, and has important significance for reasonably designing a flow conveying pipe system of the aircraft needing to be kept in a stable state.
本发明公开了一种飞行器输流管在强迫振动下的共振相互作用分析方法,属于飞行器输流管结构动力学技术领域。本方法首先建立了飞行器输流管结构模型,包括位移场模型和非线性几何关系模型;然后建立广义位移表示的飞行器输流管在强迫振动下的共振动力学模型;基于二次摄动法,开发飞行器输流管在强迫振动下的共振行为近似解;最后开展组合共振相互作用的影响分析,并建立了飞行器输流管的共振特性数据库,实现对飞行器输流管的共振特性进行综合评估和有效利用。本发明提出的分析方法可以应用于飞行器输流管在各类型强迫振动下的共振相互作用分析,对于合理设计需要保持稳定状态的飞行器输流管道系统具有重要意义。
Resonance interaction analysis method of aircraft fluid delivery pipe under forced vibration
一种飞行器输流管在强迫振动下的共振相互作用分析方法
2025-04-29
Patent
Electronic Resource
Chinese
IPC: | 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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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