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An Elastic Algorithm for Computing Rotor Assembly Pose Based on End Jump Measurement

A rotor assembly and rotor technology, applied in design optimization/simulation, geometric CAD, etc., can solve problems such as contact deformation without consideration

Active Publication Date: 2021-08-20
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] A common flaw of these prediction algorithms is that they assume rigid stacking and do not take into account actual contact deformation

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  • An Elastic Algorithm for Computing Rotor Assembly Pose Based on End Jump Measurement
  • An Elastic Algorithm for Computing Rotor Assembly Pose Based on End Jump Measurement
  • An Elastic Algorithm for Computing Rotor Assembly Pose Based on End Jump Measurement

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Embodiment Construction

[0045] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0046] An elastic algorithm for calculating the rotor assembly pose based on end jump measurements,

[0047] Basic assumption: the asperities on the mating surface are extruded against each other under the action of external force and undergo elastic deformation. The deformation behavior of the asperities is analyzed according to the Hertz contact theory, and the plastic deformation is not considered.

[0048] as attached figure 1 , with two adjacent disks, the upper and lower centers of rotor A are: A o2 、A o1 , the upper and lower centers of the rotor B are respectively: B O2 , B O1 , the mating surface of the two rotors is the upper end surface A of rotor A 2 And rotor B lower end surface B 1 ; Two contact surfaces A 2 , B 1 Represented by a matrix, the form of the data is a ring, respectively A...

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Abstract

An elastic algorithm for calculating the rotor assembly pose based on end-jump measurement. By equating the rotor mating surface into a plurality of asperity contact pairs, the Hertzian contact law is used to calculate the contact elastic deformation, and the actual contact contact pairs are separated. , use the energy and moment balance equation to judge the final contact state, and finally solve the normal vector of the contact plane to represent the contact pose, which improves the accuracy of the rotor assembly pose prediction, which can well reflect the assembly coaxiality, and better Realize the prediction and optimization of rotor assembly phase. This method is based on the measured end-jump data in actual production, and considers the elastic deformation generated during the assembly process, which makes up for the deficiency of the rigidity prediction algorithm, realizes the accurate prediction of the assembly pose before assembly, and improves the rotor synchronization after assembly. At the same time, the first-time assembly qualification rate is greatly improved, which has important practical guiding significance for axis prediction, assembly phase adjustment and optimization in the assembly process of aero-engine rotor parts.

Description

technical field [0001] The invention proposes an elastic algorithm for calculating the axis pose of rotor assembly, which can be applied to axis prediction and assembly phase optimization in the assembly process of important components such as aeroengine high-pressure compressor rotors, high-pressure turbine discs, and low-pressure rotor assemblies. , During the assembly guidance process. Background technique [0002] In the assembly process of high-precision aero-engine components, it is necessary to ensure the coaxiality after assembly. Since "trial and error" assembly requires repeated trial assembly and deployment, in order to improve assembly efficiency, reduce costs, and improve the assembly accuracy of rotor components, it is necessary to accurately predict and optimize the phase before assembly. Therefore, to improve the success rate of an assembly, it is necessary to seek the relationship between the runout shape before assembly and the axis deflection after assemb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F30/17G06F30/20
CPCG06F30/15G06F30/20
Inventor 孙清超高一超刘鑫马跃李震汪云龙赵斌斌
Owner DALIAN UNIV OF TECH
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