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Large-scale high-speed rotary equipment multistage part rigidity prediction method based on contact area maximization testing and adjustment

A contact area, measurement and adjustment technology, used in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2019-07-02
HARBIN INST OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to solve the existing technical problems and provide a method for predicting the stiffness of multi-stage components of large-scale high-speed rotary equipment based on the measurement and adjustment of the maximum contact area. Stiffness prediction model to solve the problem of low stiffness after multi-stage rotor assembly and improve engine performance

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  • Large-scale high-speed rotary equipment multistage part rigidity prediction method based on contact area maximization testing and adjustment
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  • Large-scale high-speed rotary equipment multistage part rigidity prediction method based on contact area maximization testing and adjustment

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] combine figure 1 , the present invention proposes a method for predicting the stiffness of multi-level parts of large-scale high-speed rotary equipment based on the measurement and adjustment of the maximum contact area,

[0026] Establish a three-parameter circular profile measurement model for a single-stage rotor, which includes errors caused by the eccentric error of the measured single-stage rotor, the offset of the sensor probe and the...

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Abstract

The invention provides a large-scale high-speed rotary equipment multi-stage part rigidity prediction method based on contact area maximization testing and adjustment. According to the method, the three parameter components of the rotor eccentricity error, the sensor measuring head offset and the sensor measuring ball radius in the circular profile measurement are considered, a three-parameter circular profile measurement model is established, and the eccentricity error can be accurately estimated; according to the multistage rotor transfer relation, the offset of the contact surface between the rotors at all stages is obtained, the sectional area of the contact surface is calculated, an objective function of tensile rigidity is obtained according to a tensile rigidity formula, and multistage rotor assembly rigidity prediction of the aero-engine is achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly, in particular to a method for predicting the stiffness of multi-stage components of large-scale high-speed rotary equipment based on contact area maximization measurement and adjustment. Background technique [0002] Aeroengine high-pressure combined rotors include high-pressure compressor (HPC) rotors and high-pressure turbine (HPT) rotors, which are the most critical components in aero-engines. The dynamic mechanical characteristics of the rotor system have an important impact on the reliability and safety of aero-engines, and this effect is more significant as the performance requirements of aero-engines continue to increase. How to improve the performance of the rotor has become a research hotspot and difficulty. It can be seen from the dynamic equation that the structural stiffness is an important indicator of the overall performance of the rotor. Improving the rigidity of the ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 谭久彬孙传智刘永猛
Owner HARBIN INST OF TECH
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