考虑流体惯性力的密封端部挤压膜阻尼器动态特性分析

IF 0.6 4区工程技术 Q4 MECHANICS

Journal of Theoretical and Applied Mechanics Pub Date : 2023-05-29 DOI:10.15632/jtam-pl/165937

Haiming Zhou, Yangguang Cang, Yu Qi Zhang, Chao Guo

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引用次数: 0

摘要

为了有效地计算在惯性力作用下密封端挤压膜阻尼器的动态特性，建立了密封端挤压膜阻尼器的计算流体动力学模型。采用能量近似法研究了SFD的流体惯性系数。通过理论计算和数值模拟分析了偏心比和旋转频率对刚度和阻尼的影响。本研究采用长轴承近似(LBA)理论求解了密封端SFD的油膜惯性力，为密封端SFD的设计和应用提供了指导。

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Analysis of dynamic characteristics of a sealed ends squeeze film damper considering the fluid inertia force

In order to eﬀectively calculate dynamic characteristics of a sealed ends squeeze ﬁlm damper (SFD) under the inﬂuence of the inertial force, a computational ﬂuid dynamics model of the sealed ends SFD is established. The ﬂuid inertia coeﬃcient of SFD is investigated by using an energy approximation method. Both the theoretical calculation and numerical simulation are conducted to analyze the eﬀects of eccentricity ratio and whirling frequency on stiﬀness and damping. In this research, the oil ﬁlm inertia force of the sealed ends SFD is solved by using long bearing approximation (LBA) theory, which provides guidance for the design and application of the sealed ends SFD.

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来源期刊

Journal of Theoretical and Applied Mechanics 物理-力学

CiteScore

1.40

自引率

14.30%

发文量

审稿时长

6 months

期刊介绍： The scope of JTAM contains: - solid mechanics - fluid mechanics - fluid structures interactions - stability and vibrations systems - robotic and control systems - mechanics of materials - dynamics of machines, vehicles and flying structures - inteligent systems - nanomechanics - biomechanics - computational mechanics