揺動あるいは急旋回時における弾性支持ロ-タの振動解析 [in Japanese] Vibration Analysis of a Rotor on a Flexible Suspension Subjected to Pitching or Quick Turn Motion [in Japanese]
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High speed rotors in jet engines or turbopumps used in space vehicles are mostly operated at a supercritical speed and their bearings and housings are usually supported elastically from the frame in order to reduce critical speeds. However, when the aircraft or the space vehicle turns or responds to disturbances, the rotor may contact with the casing due to vibration caused by gyroscopic moment. In this paper, a dynamic analysis is performed on vibration of a mechanical system subjected to pitching motion of the frame. Flexibility and mass of bearing housings are taken into account and the axis of pitching motion is assumed to be distant from the center of mass of the rotor. The usefulness of modeling and the validity of the computational program are demonstrated by comparison with the experimental results obtained using a model rotor. The dynamic response of the system in case of quick turn is also calculated.
- Transactions of the Japan Society of Mechanical Engineers. Series C.
Transactions of the Japan Society of Mechanical Engineers. Series C. 57(537), p1477-1484, 1991-05
The Japan Society of Mechanical Engineers