2012 Fiscal Year Final Research Report
Analysis of blade-shaft coupled vibration of turbine-generator sets
| Project/Area Number |
22560238
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | 防衛大学校 |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 機械力学・制御 / 翼軸連成振動 / 回転機械 / 磁気軸受 |
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| Research Abstract |
In rotor systems having a long-axis blade such as a turbine, zero and one modal diameter (k=0 and k=1) modes are well known with respect to blade-shaft coupled vibration.This study deal with the latter case that blades (k=1) are coupling with bending shaft vibration. In simulations and experiments, the coupled resonance wasconfirmed at the rotational speed which is |wb -ws|(where wb is blade natural frequency and ws is shaft natural frequency).
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