G1001-3-6 異方性軸受ロータの開ループ特性を利用した減衰比計算方法((3)振動解析・制振・防振2)

概要

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Many rotors are supported by an oil film bearing which has high stiffness. Since the gap of an oil bearing is very small, we must suppress vibration as much as possible to prevent metal contact by an oil membrane break. Therefore the damping ratio is an important index to use when evaluating the rotor system stability. However it is difficult to identify the damping ratio under various conditions. In this paper, we have introduced a new method using the modal open loop transfer function. This method provides a more accurate Q-value and can help to identify the damping ratio by considering only the mode which we want to measure. In this paper we introduce the evaluation of the damping ratio of the 1 DOF anisotropic bearing model.
一般社団法人日本機械学会の論文
2009-09-12