Rub-impact investigation on the lateral-torsional coupled vibration of a bolted joint rotor system with interface contact

IF 4.4 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Applied Mathematical Modelling Pub Date : 2025-09-23 DOI:10.1016/j.apm.2025.116459

Bo Yang , Yuqi Li , Chuanmei Wen , Lei Li , Bing Li , Wenting Song

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引用次数: 0

Abstract

Under speed-up conditions, the monotonically increasing load significantly affects the contact state of bolted joint interfaces, potentially exacerbating rubbing faults. Therefore, a numerical model is developed based on static simulations and the Iwan model. The proposed model's capability in capturing the interface contact state is confirmed through a comparison of static and dynamic responses. Subsequently, a coupled lateral-torsional vibration model for the bolted joint rotor system considering rubbing faults is developed by combining the lumped-mass method with the Stribeck model. Numerical results indicate that rubbing faults intensify interface contact variations, reducing the system’s equivalent stiffness. Moreover, during acceleration, the additional imbalance force induced by speed-up further exacerbates interface contact variations, resulting in more pronounced stiffness softening. Finally, experimental testing validates the effectiveness of the numerical simulation results. This study provides valuable theoretical guidance for rotor system structural design and fault diagnosis.

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具有界面接触的螺栓连接转子系统横扭耦合振动的碰摩研究

在加速条件下，单调增加的载荷显著影响螺栓连接界面的接触状态，可能加剧摩擦故障。因此，在静态模拟和Iwan模型的基础上建立了数值模型。通过静态和动态响应的比较，验证了所提模型捕捉界面接触状态的能力。随后，将集总质量法与Stribeck模型相结合，建立了考虑摩擦故障的螺栓连接转子系统的横扭耦合振动模型。数值结果表明，摩擦故障加剧了界面接触变化，降低了系统的等效刚度。此外，在加速过程中，由加速引起的额外不平衡力进一步加剧了界面接触变化，导致刚度软化更加明显。最后，通过实验验证了数值模拟结果的有效性。该研究为转子系统结构设计和故障诊断提供了有价值的理论指导。

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

Applied Mathematical Modelling 数学-工程：综合

CiteScore

9.80

自引率

8.00%

发文量

508

审稿时长

43 days

期刊介绍： Applied Mathematical Modelling focuses on research related to the mathematical modelling of engineering and environmental processes, manufacturing, and industrial systems. A significant emerging area of research activity involves multiphysics processes, and contributions in this area are particularly encouraged. This influential publication covers a wide spectrum of subjects including heat transfer, fluid mechanics, CFD, and transport phenomena; solid mechanics and mechanics of metals; electromagnets and MHD; reliability modelling and system optimization; finite volume, finite element, and boundary element procedures; modelling of inventory, industrial, manufacturing and logistics systems for viable decision making; civil engineering systems and structures; mineral and energy resources; relevant software engineering issues associated with CAD and CAE; and materials and metallurgical engineering. Applied Mathematical Modelling is primarily interested in papers developing increased insights into real-world problems through novel mathematical modelling, novel applications or a combination of these. Papers employing existing numerical techniques must demonstrate sufficient novelty in the solution of practical problems. Papers on fuzzy logic in decision-making or purely financial mathematics are normally not considered. Research on fractional differential equations, bifurcation, and numerical methods needs to include practical examples. Population dynamics must solve realistic scenarios. Papers in the area of logistics and business modelling should demonstrate meaningful managerial insight. Submissions with no real-world application will not be considered.