1012 スクイズフィルムダンパの動特性の研究(OS-6.GS-10 流体関連振動)

概要

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Squeeze film damper is an important element to supply damping for rotating machinery such as jet engine. When vibration of the rotating machinery increase, negative pressure is larger than supply oil pressure in squeeze film damper, and oil film's pressure reach the vapor pressure, and oil film is ruptured. Ruptured oil film decrease damping coefficient. Simplified model have been applied such as π film and 2π film. Cavitations is obserbed in the condition depend on viscosity and vapor pressure of using oil, and volume of supply oil pressure, and so on. Two test models were built and tested One is small cavitations observation model made by acryl outer ring squeeze film damper. And the other is actual size damper model excited by mechanical vibration generator. As a result, the cavitations condition was clearly confirmed.
一般社団法人日本機械学会の論文
2004-03-17