Bearing support device and stiffness calibration system and method

Abstract

The invention provides a bearing support device and a stiffness calibration system and method, and relates to the technical field of aircraft structural strength test verification. The bearing supportdevice comprises an outer bearing support which provides a first inner annular surface, wherein an annular fixed bearing is arranged on the first inner annular surface. The device further comprises an inner bearing support which provides a second inner annular surface, wherein another annular fixed bearing is arranged on the second inner annular surface. The inner and outer bearing supports are fixedly connected. Axial and radial directions of shaft members are defined by the bearing support device. According to the stiffness calibration system and method, which are provided by the invention,rigidity calibration of the outer bearing support and the inner bearing support is carried out through a load applying mechanism and a displacement gauge; the test method is simple and reliable; andthe test precision is high.

Description

technical field [0001] The invention belongs to the technical field of aircraft structural strength test verification, and in particular relates to a bearing support device, a stiffness calibration system and a method. Background technique [0002] Shaft components (such as turbine shafts) are key transmission components in military and civilian mechanical structures and play a central role. At present, there are few domestic studies on the fatigue performance of such components, and there are few domestic literature reports on the performance verification of shaft components under complex fatigue loading conditions. Due to the lack of evaluation methods for the fatigue performance indicators of shaft parts, shaft parts are often conservative in design and heavy in weight. Although the reliability and safety of the mechanical structure are guaranteed to a certain extent, this is not the case. On the one hand, it reduces the overall performance index, and on the other hand, ...

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Problems solved by technology

[0003] In order to solve at least one of the above technical problems, the present application provides a bearing support device, a stiffness calibration system and a method. The shaft parts are fixed by the bearing support device so that the loading equipment can load the shaft parts, which can solve military and civil problems. It is difficult to simulate the boundary conditions in the fixation, loading and test verification of the shaft parts of the aircraft, and it is not easy to apply coupling loads, so as to provide technical capabilities for the reliability verification of the shaft parts and structures of the aircraft

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