주파수 응답해석을 통한 제작공차를 가지는 저압터빈 케이싱의 고진동 원인 규명
High vibration of a low pressure (LP) turbine casing caused safety problems and life at the facility it was housed in. The main focus of this study was the cause of the high vibration in a low pressure turbine casing with manufacturing defects by frequency response analysis, compared with the result...
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Veröffentlicht in: | 한국생산제조학회지 2015, 24(4), , pp.463-468 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | kor |
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Online-Zugang: | Volltext |
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Zusammenfassung: | High vibration of a low pressure (LP) turbine casing caused safety problems and life at the facility it was housed in. The main focus of this study was the cause of the high vibration in a low pressure turbine casing with manufacturing defects by frequency response analysis, compared with the results of experiments. Therefore, excited accelerations were obtained from the LP casing fundamental, and frequency responses were analyzed. The measurement and the modal analysis showed that the natural frequency of the LP turbine casing was 61.26 Hz and the excited frequency of the turbine rotor was 60.25 Hz. The manufacturing defect caused a decrease in the casing natural frequency and resulted in the high vibration of the casing because it moved close to the resonant frequency. KCI Citation Count: 2 |
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ISSN: | 2508-5093 2508-5107 |
DOI: | 10.7735/ksmte.2015.24.4.463 |