Effect of piston ring configuration on squeeze film damper performance with focus on axial and slit positions

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2025-09-17 DOI:10.1016/j.jsv.2025.119463

Hailun Zhou , Gangyi Cao , Xunyan Yin , Dengfeng Wu , Maoquan Tian

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引用次数: 0

Abstract

The piston ring is an important sealing component of the squeeze film damper (SFD). Identifying the mechanism through which the piston ring installation state affects damping characteristics is crucial for optimizing the design of SFD. This research first optimized the design criteria for the piston ring suitable for SFD, based on the frictional torque balance equation and the elastic force threshold equation of the piston ring. Subsequently, a Computational Fluid Dynamics (CFD) model considering two-phase flow phenomena was developed, and the effects of the axial installation position and the slit position of the piston ring on the damping performance were studied. The research demonstrates that the axial installation position of the piston ring significantly affects the sensitivity of damping to the lateral clearance, with sensitivity reaching its maximum when the piston ring is installed at the center of the groove. The installation position of the slit alters the distribution pattern of the transient oil film force, based on which a method for identifying the optimal installation region of the slit is proposed. Finally, experiments were conducted to verify the accuracy of the numerical simulation method, providing a foundation and technical support for the optimized SFD design.

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活塞环结构对挤压膜阻尼器性能的影响，重点关注轴向和狭缝位置

活塞环是挤压膜阻尼器（SFD）的重要密封部件。确定活塞环安装状态影响阻尼特性的机理是优化设计活塞环阻尼器的关键。本研究首先基于活塞环的摩擦力矩平衡方程和弹性力阈值方程，优化了适用于SFD的活塞环设计准则。随后，建立了考虑两相流现象的计算流体力学模型，研究了活塞环轴向安装位置和狭缝位置对减震性能的影响。研究表明，活塞环轴向安装位置显著影响阻尼对横向间隙的灵敏度，当活塞环安装在槽中心位置时灵敏度最大。狭缝的安装位置改变了瞬态油膜力的分布规律，在此基础上提出了一种确定狭缝最佳安装区域的方法。最后通过实验验证了数值模拟方法的准确性，为SFD的优化设计提供了基础和技术支持。

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.