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초록
Equations of chordwise and flapwise bending motions for the vibration analysis of rotating pre-twisted blades having tapered cross section and setting angle are derived by using hybrid deformation variable modeling. The two motions are couples to each other due to the pre-twisted angle of the beam cross section. The derived equations are transformed into dimensionless forms in which dimensionless parameters are identified. The effects of the dimensionless parameters on the modal characteristics of rotating pre-twisted blades having tapered cross section and orientation angle are investigated. The eigenvalue loci veering phenomena are also investigated and discussed in this work.
키워드
진동해석; 초기 비틀림각을 갖는 회전 블레이드; 테이퍼진 단면; 장착 각; 복합 변형변수를 이용한 모델링; 궤적 휨 현상; Vibration Analysis; Rotating Pre-twisted Blade; Tapered Cross Section; Setting Angle; Hybrid Deformation Variable Modeling; Loci Veering
- 제목
- 초기 비틀림각 및 장착 각의 영향을 고려한 단면 테이퍼진 회전 블레이드의 진동해석
- 제목 (타언어)
- Vibration Analysis of Rotating Blades with the Cross Section Taper Considering the Pre-twist Angle and the Setting Angle
- 저자
- 이준희; 유홍희
- 발행일
- 2010-01
- 저널명
- 한국소음진동공학회논문집
- 권
- 20
- 호
- 1
- 페이지
- 10 ~ 21