Simulation load balancing method and device for aircraft engine crankcase strength tests

Abstract

The invention relates to a simulation load balancing method and device for aircraft engine crankcase strength tests. According to the method, X-axis force, symmetrical torque force, Y-axis lateral force and Z-axis lateral force are provided for different positions of a crankcase through a servo oil cylinder, and thus the stress conditions of the crankcase are synthesized. The method is reliably verified due to the fact that the device is provided with the servo oil cylinder, an annular outer pipe, an annular inner pipe, an annular piston, a pull rod, an inner pressing plate and an outer pressing plate. With the simulation load balancing method and device for aircraft engine crankcase strength tests, the stress conditions of the crankcase can be effectively simulated, the simulated loaded load range is wide, and thus the requirements of high-strength tests are met.

Description

technical field [0001] The invention relates to a simulated load balancing method and device for an aircraft engine casing strength test, belonging to the technical field of aircraft engines. Background technique [0002] With the continuous development of my country's aviation technology, my country's aviation industry has made great progress. However, when it comes to engine technology, it has always been a weakness and has been blocked by foreign technologies. The engine casing is one of the important basic parts of the aircraft engine, and its performance has a fatal impact on the running quality of the engine. Therefore, the performance test of the aircraft engine casing is particularly important. [0003] Since the casing of an aircraft engine is usually a thin-walled ring, and the cavities are distributed on different levels, it is required to test under different pressures. It is extremely difficult to ensure the smooth progress of the strength test. In the prior ar...

AI Technical Summary

Problems solved by technology

In the prior art, the strength test of the casing usually adopts the method of internal pressure loading, that is, the clamp seals the two ends of the cavity of the casing, and at the same time, a large-tonnage servo cylinder is used to inject hydraulic oil into the inner and outer cavity respectively to compress the casing. The strength of the casing is obtained by obtaining the pressure difference between the internal and external hydraulic oil. This method is undoubtedly relatively backward. It can only simply simulate the force of the casing. Cause damage, while the load range of simulated loading is small, it is difficult to meet the needs of high-strength tests

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