基礎励振を受けるスクウィーズ・フィルム・ダンパ〜弾性回転体系の振動解析

概要

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The purposes of this study are to clarify the characteristics of fluid film of a squeeze film damper (SFD) which consists of fluid film and centering springs, and to develop an analytical method which can simulate vibration phenomena of a flexible rotor system supported by the SFD's. It is also supposed that a squeeze film damper〜flexible rotor system is subjected to a base excitation, such as an earthquake with a vertical shock. The fluid film forces of the SFD were computed by solving the Reynolds equation for finite-length bearings. In the formulation of a rotating shaft, a finite-element method (FEM) was used to consider the elasticity and arbitrary shape of the shaft. We show the calculated results for the properties of the fluid films, vibration modes of the rotor system and time history responses in the case when the rotor system was subjected to a base excitation. The results of the calculations show that usage of the SFD's can effectively reduce the rotor vibration caused by both unbalance of the rotor and the base excitation.
一般社団法人日本機械学会の論文
1996-05-25