高速軸受を支持するOリング動特性の解析と測定

抄録

High speed turbo machineries experience severe vibrations such as resonance or self-excited whirl of bearings. Utilizing O-rings as supporters of bearing is promising way to suppress these oscillations. But the prediction of dynamic properties of the O-rings is hard because of its non-linearity. In this paper, we measured the shear viscoelasticity of O-ring material for high frequency up to 1 [kHz]. The properties for each frequency were modeled as 3-element model and the FEM dynamic analysis was conducted. As a result, we could calculate the dynamic properties of O-rings without actual measurement.