Purpose

Assembly errors of aeroengine rotor must be controlled to improve the aeroengine efficiency. However, current method cannot truly reflect assembly errors of the rotor in working state owing to difficulties in error analysis. Therefore, the purpose of this study is to establish an optimization method for aeroengine rotor stacking assembly.

Design/methodology/approach

The assembly structure of aeroengine rotor is featured. Rotor eccentricity is optimized based on Jacobian–Torsor model. Then, an optimization method for assembly work is proposed. The assembly process of the high-pressure compressor rotor and the high-pressure turbine rotor as the rotor core assembly is mainly considered.

Findings

An aeroengine rotor is assembled to verify the method. The results show that the predicted eccentricity differed from the measured eccentricity by 6.1%, with a comprehensive error of 8.1%. Thus, the optimization method has certain significance for rotor assembly error analysis and assembly process optimization.

Originality/value

In view of the error analysis in the stacking assembly of aeroengine rotor, an innovative optimization method is proposed. The method provides a novel approach for the aeroengine rotor assembly optimization and is applicable for the assembly of high-pressure compressor rotor and high-pressure turbine rotor as the rotor core assembly.

中文翻译：

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航空发动机转子叠装偏差几何建模分析方法

目的

必须控制航空发动机转子的装配误差以提高航空发动机的效率。但目前的方法由于误差分析困难，不能真实反映转子在工作状态下的装配误差。因此，本研究的目的是建立一种航空发动机转子叠装的优化方法。

设计/方法/途径

介绍了航空发动机转子的装配结构。转子偏心率基于 Jacobian-Torsor 模型进行了优化。然后，提出了装配工作的优化方法。主要考虑高压压气机转子和高压涡轮转子作为转子铁芯组件的装配工艺。

发现

组装航空发动机转子以验证该方法。结果表明，预测偏心率与实测偏心率相差6.1%，综合误差为8.1%。因此，该优化方法对转子装配误差分析和装配工艺优化具有一定的意义。

原创性/价值

针对航空发动机转子叠装装配中的误差分析，提出了一种创新的优化方法。该方法为航空发动机转子装配优化提供了一种新途径，适用于高压压气机转子和高压涡轮转子作为转子铁芯组件的装配。