Fatigue test device and method thereof

Abstract

The invention belongs to the technical field of aircraft rear fuselage structure fatigue tests, and particularly relates to a fatigue test device, which comprises two vertical fin vibration load loading devices, wherein each vertical fin vibration load loading device is used for correspondingly connected with a vertical fin of the aircraft rear fuselage structure for applying a vibration load to the corresponding vertical fin two vertical tail gas dynamic load loading devices, each vertical tail gas dynamic load loading device being used for being correspondingly connected to one vertical finof the aircraft rear fuselage structure to apply aerodynamic load to the corresponding vertical fin; and an engine frame vibration load loading device which is used for being connected to an engine frame of an aircraft rear fuselage structure and applying a vibration load to the engine frame. Furthermore, the invention relates to a fatigue test method which is implemented on the basis of the fatigue test device, and a relatively more effective test result can be obtained when the fatigue test method is applied to the aircraft rear fuselage structure fatigue test.

Description

technical field [0001] The application belongs to the technical field of fatigue test of aircraft rear fuselage structure, and in particular relates to a fatigue test device and a method thereof. Background technique [0002] At present, when conducting aircraft fatigue tests, the dynamic characteristics of the aircraft structure during flight are mostly ignored, and the load environment of the aircraft structure during flight cannot be truly simulated, resulting in deviations between the test structure and the actual situation. [0003] The rear fuselage structure of the aircraft includes the engine frame and two opposite vertical fins, which are subjected to complex loads during the flight of the aircraft. Among them, the engine frame bears the vibration load caused by the engine when the aircraft is flying, and the vertical fin bears the vibration load caused by the air flow passing through its surface. Vibration loads of eddy currents, as well as withstand aerodynamic lo...

AI Technical Summary

Problems solved by technology

[0004] When performing fatigue tests on the rear fuselage structure of an aircraft, how to accurately simulate its loaded state during flight is of great significance for obtaining accurate test results. At present, when performing fatigue tests on the rear fuselage structure of an aircraft, there is a lack of accurate simulation It is an effective method for the rear fuselage structure of the aircraft to be loaded under the flight state, and it is difficult to obtain effective test results

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