Supporting structure for determining the influence characteristics of squeeze film damper parameters

Abstract

The invention discloses a supporting structure used for measuring parameter influence characteristics of an extrusion oil film damper. A supporting seat and an independent support are fixed to a base. A disc spring is located between the bottom surface of the independent support and the upper surface of the base. One end of a squirrel cage type elastic support is embedded in the supporting seat, and the other end face of the squirrel cage type elastic support is embedded in one end face of a bearing seat. An oil film outer ring is arranged on the bearing seat in a sleeving manner, and one end of the oil film outer ring is embedded in the inner surface of the independent support. An oil film layer is arranged between the bearing seat and the oil film outer ring. Position adjustment of the oil film outer ring is conducted through the independent support, and the purpose of changing parameters of the damper is achieved. After the supporting structure used for measuring the parameter influence characteristics of the extrusion oil film damper is introduced, under the condition that the parameters of a rotor are not changed, the structure parameters of the extrusion oil film damper are changed only in the manner of changing the independent support. The supporting structure is simple and convenient to install, and the influences of the structure parameters on the vibration damping performance of the extrusion oil film damper can be measured more accurately.

Description

technical field [0001] The invention relates to the field of rotor vibration control, and is a supporting structure which adopts a parameter-adjustable structure and can be used for measuring the influence characteristics of squeeze oil film damper parameters. Background technique [0002] High-speed rotating machines such as aero-engines often use flexible rotors, and the operating speed of the rotor is often above the first-order or several-order critical speed. During the working process, such as starting, stopping, changing working conditions, etc., the rotor must pass through the critical speed many times, resulting in severe vibration of the rotor, and even causing harm to the rotor system, which seriously affects the reliability of the aero-engine. Therefore, the vibration reduction of the rotor system has become an important research field of rotor dynamics. [0003] Squeeze oil film damper, as a traditional damping mechanism, is now used in various types of aero-en...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies in the prior art that the parameters are not adjustable, difficult to measure, the oil film outer ring is not independent, and cannot be studied in a single variable, the present invention proposes a support structure for measuring the influence characteristics of the extrusion oil film damper parameters

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