Dynamic modeling of a shaft-disk system considering bolted interface friction

IF 7.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Mechanical Sciences Pub Date : 2025-05-01 DOI:10.1016/j.ijmecsci.2025.110332

Yulin Jiang , Yazheng Zhao , Hongyuan Cao , Chaofeng Li , Jin Zhou

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引用次数: 0

Abstract

Rotor systems operating under high loads, such as those in aero-engines, often exhibit complex vibration characteristics due to frictional effects at bolted joint interfaces. These effects arise from positional discontinuities introduced by the bolted structure, leading to nonlinear dynamic responses within the system. This study develops a dynamic rotor system model using the finite element method, incorporating a bolted connection contact friction model. The influence of friction-induced nonlinearity on the system's dynamic behavior is systematically analyzed. The procedure for assessing the viscous -slip states of the bolts at different positions during the motion of the rotor system is provided. The study examines the viscous-slip phenomenon at the bolted interface under various conditions, including different preload values, rotational speeds, bolt numbers, and friction coefficients. Additionally, the critical preload force for each stage of the bolted connection under different rotational speeds is discussed. The preload region of the bolted connection interface in the viscous-slip-shear state is also presented. This work introduces a modeling approach that incorporates a nonlinear contact friction model for bolted connections to better understand the dynamic characteristics of bolted rotor systems operating in the viscous-slip regime at their connection interfaces. It provides an analytical model that serves as a foundation for designing and calculating bolted connection interfaces in engineering applications.

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考虑螺栓界面摩擦的轴盘系统动力学建模

在高载荷下运行的转子系统，如航空发动机，由于螺栓连接界面上的摩擦效应，经常表现出复杂的振动特性。这些影响是由螺栓结构引入的位置不连续引起的，导致系统内的非线性动力响应。本研究采用有限元方法建立了转子系统动力学模型，其中包含螺栓连接接触摩擦模型。系统地分析了摩擦非线性对系统动力性能的影响。给出了转子系统运动过程中不同位置螺栓粘滑状态的计算方法。该研究考察了各种条件下螺栓界面的粘滑现象，包括不同的预紧值、转速、螺栓数量和摩擦系数。此外，还讨论了不同转速下螺栓连接各阶段的临界预紧力。给出了粘滑剪切状态下螺栓连接界面的预紧区域。这项工作引入了一种建模方法，该方法结合了螺栓连接的非线性接触摩擦模型，以更好地理解螺栓转子系统在其连接界面的粘滑状态下运行的动态特性。为工程应用中螺栓连接接口的设计和计算提供了一个解析模型。

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 Mechanical Sciences 工程技术-工程：机械

CiteScore

12.80

自引率

17.80%

发文量

769

审稿时长

19 days

期刊介绍： The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering. The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture). Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content. In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.