Auxiliary loading device for turbine engine casing rigidity test

Abstract

The invention aims at providing an auxiliary loading device of stiffness testing of a turbine engine case, thereby carrying out loading of tensile, bending, torsional stiffness tests. A loading disk has a loading center disposed coaxially with a tested case. The upper end of an upper transfer segment is connected to the loading disk and the lower end is connected to the upper end of the tested case. The upper end of a lower transfer segment is connected with the lower end of the tested case. A grounding disk is fixed on the base and is connected with the lower end of the lower transfer segment. A plurality of vertical actuating cylinders are arranged in a vertical direction; one end of each vertical actuating cylinder is connected to a vertical loading point of the loading disk; and the vertical loading points are distributed symmetrically around the loading center as the center. A plurality of horizontal actuating cylinders are arranged in a horizontal direction; one end of each horizontal actuating cylinder is connected to a horizontal loading point on the loading disk; the horizontal loading points are arranged in a diameter direction of the loading disk; one horizontal loadingpoint is arranged at the loading center; and the rest horizontal loading points are distributed symmetrically around the loading center as the center. A bracket beam is used for mounting the horizontal actuating cylinders.

Description

technical field [0001] The invention relates to a turbine engine test device, in particular to an auxiliary loading device for realizing the stiffness test of the turbine engine casing. Background technique [0002] Aeroengine stator casing is the skeleton of the engine. With the development of high speed and high thrust-to-weight ratio of aeroengine, the casing is mostly designed as a thin-walled cylindrical structure with weak rigidity. The rigidity of the casing has a great influence on the supporting stiffness of the rotor and the critical speed. The rigidity of the casing will also affect the layout of the vibration measuring points of the whole machine, etc., and with the development of finite element technology, the finite element analysis of components and the whole machine has been widely used in engineering practice, but it is necessary to test based on the stiffness characteristics The data is used to check and calibrate the finite element model, so it is necessar...

AI Technical Summary

Problems solved by technology

[0004] At present, there are relatively few auxiliary loading devices for stiffness tests, and they are not suitable for aero-engine case structures

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