Performance Analysis and Test Verification of Porous Tilting Pad Bearings with Hermetically Sealed Squeeze Film Damper in Parallel

doi:10.3901/JME.2023.01.151

Abstract

Abstract: Porous tilting pad bearings (PTPBs) with hermetically sealed squeeze film dampers(HSFD) in parallel is considered to be used in the MW turbomachinery and has a wide range of application prospects, considering the satisfactory damping of HSFD. A numerical method is presented in this study to estimate the equivalent stiffness and equivalent damping of HSFD, and the frequency dependent of stiffness and damping is reflected successfully. A comprehensive theoretical model of PTPBs with HSFD in parallel is proposed by coupling the HSFD and porous models through the equation of motion of tilting pad, which is verified through experiments. The effects of many parameters, such as supply pressure, bearing clearance, and whether install HSFD are discussed. Results show that the damping and stability of PTPBs with HSFD in parallel is much higher than those of PTPBs.

Key words: dermetically sealed squeeze film damper(HSFD), damper performance, theoretical model, porous tilting bearing (PTPBs), static and dynamic characteristics

CLC Number:

TH113.1

WANG Jianwei, LI Hang, WU Yuanhui, FAN Jiahui, FENG Kai. Performance Analysis and Test Verification of Porous Tilting Pad Bearings with Hermetically Sealed Squeeze Film Damper in Parallel[J]. Journal of Mechanical Engineering, 2023, 59(1): 151-161.

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