The modeling and experiment study on temperature characteristics of the rub-impact of titanium alloy rotor-stator system

IF 2.8 3区工程技术 Q2 MECHANICS

International Journal of Non-Linear Mechanics Pub Date : 2025-02-05 DOI:10.1016/j.ijnonlinmec.2025.105036

Yongfang Zhang , Hongwei Xu , Yiwei Zhao , Yanjun Lü , Xinliang Yang , Li Xiong

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引用次数: 0

Abstract

The rub-impact of rotor-stator system occurs when the relative motion gap between the blades and the casing exceeds radius clearance during the operation of aero-engine. It is great significant to study the temperature variations during the rub-impact of rotor-stator system for preventing combustion. The effects of nonlinear contact, centrifugal force, normal acceleration are considered to model the rub-impact contact forces of a rotor-stator system based on Hertz contact theory. The temperature field of the rub-impact of the rotor-stator system is calculated using the finite difference method by considering frictional heat generation, heat distribution, and heat conduction. Meanwhile, a rotor-stator rubbing experiment is conducted to measure the temperature of the contact surface under the operational conditions. The numerical results by the proposed method are in good agreement with the experiment results and the mean relative error is 2.96%. The proposed method can predict the temperature field on the rub-impact surface of the rotor-stator system accurately.

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钛合金转子-定子系统碰摩温度特性的建模与实验研究

在航空发动机运行过程中，当叶片与机匣的相对运动间隙超过半径间隙时，就会发生动-静系统的碰摩。研究转子-定子系统碰摩过程中的温度变化对防止燃烧具有重要意义。基于赫兹接触理论，考虑了非线性接触、离心力、法向加速度的影响，建立了转子-定子系统的碰摩接触力模型。考虑摩擦热的产生、热分布和热传导，采用有限差分法计算了转子-定子系统的碰摩温度场。同时，进行了转子-定子摩擦实验，测量了运行工况下的接触面温度。数值计算结果与实验结果吻合较好，平均相对误差为2.96%。该方法能准确预测转子-定子系统碰摩面温度场。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Non-Linear Mechanics 物理-力学

CiteScore

5.50

自引率

9.40%

发文量

192

审稿时长

67 days

期刊介绍： The International Journal of Non-Linear Mechanics provides a specific medium for dissemination of high-quality research results in the various areas of theoretical, applied, and experimental mechanics of solids, fluids, structures, and systems where the phenomena are inherently non-linear. The journal brings together original results in non-linear problems in elasticity, plasticity, dynamics, vibrations, wave-propagation, rheology, fluid-structure interaction systems, stability, biomechanics, micro- and nano-structures, materials, metamaterials, and in other diverse areas. Papers may be analytical, computational or experimental in nature. Treatments of non-linear differential equations wherein solutions and properties of solutions are emphasized but physical aspects are not adequately relevant, will not be considered for possible publication. Both deterministic and stochastic approaches are fostered. Contributions pertaining to both established and emerging fields are encouraged.