Switching structure with stress splitting groove for wheel disc test

Abstract

The invention provides a switching structure for a wheel disc test. The switching structure comprises a disc center part and a disc edge part, the disc center part comprises a thickening part, a stress splitting groove and a driving shaft connecting part, the wheel disc and the disc edge are partially connected, and the driving shaft connecting part is connected to a driving shaft.

Description

technical field [0001] The invention relates to a wheel disc test transfer structure, in particular to a transfer structure with stress separation grooves used for the low-cycle fatigue test of the aeroengine wheel disc. Background technique [0002] Discs are the most typical key parts of aero-engines, including fan discs, compressor discs, turbine discs, and grate discs. The thermal stress of the disc, the centrifugal force of the blades on the outer edge of the disc and the mass centrifugal force of the disc itself. [0003] In the complex cycle of takeoff-work-landing of the aircraft, the working temperature and stress (including thermal stress) of the roulette also change with the cycle. It is precisely because of these changing loads that as the number of cycles increases, the The weak parts (stress concentration points), such as wheel tenons, vent holes, bolt holes, center holes, and other corners with sudden changes in shape, produce high-stress low-cycle fatigue cr...

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the problems of low life of the bolt holes on the installation side and high stress at the opening position of the transfer structure, and proposes a transfer structure with stress separation grooves for low-cycle fatigue test of the wheel disc

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