진동해석; 초기 비틀림 각; 단면 테이퍼; 집중질량; Vibration Analysis; Pre-twist Angle; Cross Section Taper; Concentrated Mass
Issue Date
2013-04
Publisher
한국소음진동공학회
Citation
한국소음진동공학회논문집 제23 권 제4 호, pp. 338~346,
Abstract
Equations of motion of a rotating blade considering pre-twist angle, cross section taper and a concentrated mass are derived using the hybrid deformation variable modeling method. For the modeling of a concentrated mass which is located at an arbitrary position of the blade, a Dirac delta function is employed for the mass density function. The final equations for the vibration analysis are transformed into a dimensionless form using several dimensionless parameters. The effects of the dimensionless parameters on the vibration characteristics of the rotating blade are investigated through numerical analysis.