Study on the added mass effect in squeeze-film dampers

被引：0

作者：

Hongchang Wang

Wentao Shan

Chengtao Yu

机构：

[1] Jiangsu University of Technology,School of Mechanical Engineering

[2] Southeast University,School of Mechanical Engineering

来源：

Journal of Mechanical Science and Technology | 2018年 / 32卷

关键词：

Damping fluid; Added mass; Squeeze film damper; Dynamic analysis;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Squeeze-film dampers (SFD) are used as indispensable bearings in many rotating machines to suppress lateral vibration and enhance stability. The kinetic energy of the damping fluid is sometimes greater than that of SFD’s journal. Therefore, the influence of the damping fluid must be considered in establishing a dynamic model of a rotor–bearing system. A concept that involves the added mass of the damping fluid is proposed in this work, and the calculation formula is derived based on laminar flow theory and the mean-square speed of the fluid. The unbalance responses of a rotor–bearing system are solved by numerical iteration and with the transfer matrix method. The results calculated with and without added mass are compared. Experimental results indicate that introducing the added mass of the damping fluid into a dynamic model is effective.

引用

页码：2889 / 2895

页数：6

共 47 条

[1]

Luo D.(2017)The design and analysis of supercritical carbon dioxide centrifugal turbine Applied Thermal Engineering 127 527-535

[2]

Liu Y.(2015)Dynamic performance analysis of high speed flexible coupling of gasturbine engine transmission system Journal of Mechanical Science and Technology 29 173-179

[3]

Sun X.(2015)Design techniques to improve the performance of a centrifugal pump using CFD Journal of Mechanical Science and Technology 29 215-225

[4]

Hung D.(2017)Thermodynamic model for reciprocating compressor with the focus on fluid dependent efficiencies International Journal of Refrigeration 84 104-116

[5]

Nagesh S.(2018)The influence of flywheel micro vibration on space camera and vibration suppression Mechanical Systems and Signal Processing 100 360-370

[6]

Junaid Basha A. M.(2001)On the vibration of rotorbearing system with squeeze film damper in an energy storage flywheel International J. of Mechanical Sciences 43 2525-2540

[7]

Singh T. D.(2014)Flywheel energy storage system with a permanent magnet bearing and a pair of hybrid ceramic ball bearings Journal of Mechanical Science and Technology 28 5043-5053

[8]

Kim J.-H.(2009)The dynamic analysis of an energy storage flywheel system with hybrid bearing support Journal of Vibration and Acoustics 131 051006-1–9

[9]

Lee H.-C.(1987)Effect of the fluid inertia on Squeeze-film damper forces for small-amplitude circularcentered motions ASLE Transactions 30 63-68

[10]

Kim J.-H.(2017)Application of computational fluid dynamics simulation to squeeze film damper analysis ASME. Journal of Engineering for Gas Turbines and Power 139 102501-1–11

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