Experimental study on dynamic characteristic coefficient of squeeze film damper

WANG Yong-liang; GAO Yang; LI Shi-hao; CUI Ying

doi:10.16411/j.cnki.issn1006-7736.2019.04.017

Journal of Dalian Maritime University >

2019 , Vol. 45 >Issue 4: 123 - 130

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2019.04.017

Experimental study on dynamic characteristic coefficient of squeeze film damper

WANG Yong-liang ,
GAO Yang ,
LI Shi-hao ,
CUI Ying

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（Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026,China）

Received date: 2019-03-25

Revised date: 2019-04-15

Online published: 2019-04-15

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Abstract

A test-bed for identifying the dynamic characteristic of squeeze film damper （SFD）was designed and built, and the composition and function of each system of the test-bed were described,and the dynamic characteristics of the test-bed were analyzed.On this basis,a feasible method for calculating the dynamic coefficients of oil film was proposed,and the system stiffness and damping of the test bed were measured. The influence of precession frequency on the damping characteristics of SFD was studied.It is found that the damping coefficient of the oil film does not change with the vortex frequency. The results are in agreements with the classical short bearing hypothesis, which proves that the test-bed is highly reliable in identifying the dynamic characteristic coefficient of the SFD.

Key words： squeeze film damper(SFD); test-bed; dynamic characteristics coefficient; experimental research

Cite this article

WANG Yong-liang , GAO Yang , LI Shi-hao , CUI Ying . Experimental study on dynamic characteristic coefficient of squeeze film damper[J]. Journal of Dalian Maritime University, 2019 , 45(4) : 123 -130 . DOI: 10.16411/j.cnki.issn1006-7736.2019.04.017

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