Investigation on dynamic rubbing characteristics of a bladed rotor system with multi-mode rubbing fault

IF 4.3 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2024-10-23 DOI:10.1016/j.jsv.2024.118790

Tao Tang , Yu Wang , Shuai Wang , Mingquan Zhang , Zhenyi Chen , Yuhao Zhao

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引用次数: 0

Abstract

Dynamic behavior analysis of blades under high cycle fatigue with rubbing fault is vital for estimating the reliability of rotating machinery. This paper focuses on a novel rubbing model and the flexible dynamic characteristics of a shaft-blade-disk system (SBDS) model with considerations of various forms of rub-impacts. Firstly, the deformation relations and the motion equations of the SBDS model in steady state are derived using Lagrange's principle. Secondly, a new quasi-static blade rubbing model involving shaft deformation and blade coupling effect is established, and the influence of rub-impact correlation parameters on rubbing force is further explored. Then, both the effect of shaft-disk coupling on the blades at various states and the dynamic characteristics of numerous rubbing modes are also investigated. The results revealed that the asymmetric form of rub-impact will induce more complex vibrational behavior (such as frequency components and trajectory differences), while the symmetrical rubbing modes can keep the system relatively stable.

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具有多模式摩擦故障的叶片转子系统动态摩擦特性研究

叶片在摩擦故障的高循环疲劳下的动态行为分析对于评估旋转机械的可靠性至关重要。本文重点研究了一种新型摩擦模型和轴-叶片-盘系统（SBDS）模型的柔性动态特性，并考虑了各种形式的摩擦冲击。首先，利用拉格朗日原理推导出 SBDS 模型在稳态下的变形关系和运动方程。其次，建立了涉及轴变形和叶片耦合效应的新型准静态叶片摩擦模型，并进一步探讨了摩擦撞击相关参数对摩擦力的影响。然后，还研究了不同状态下轴-盘耦合对叶片的影响以及多种摩擦模式的动态特性。结果表明，非对称形式的摩擦撞击会引起更复杂的振动行为（如频率成分和轨迹差异），而对称的摩擦模式则能使系统保持相对稳定。

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

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.