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초록
Modal characteristics of a cracked beam with a concentrated mass undergoing rotational motion are investigated in this paper. Hybrid deformation variables are employed to derive the equations of motion of a rotating cantilever beam. The flexibility due to crack, which is assumed to be open during the vibration, is calculated basing on a fracture mechanics theory. To obtain more general information, the equations of motion are transformed into a dimensionless form in which dimensionless parameters are identified. The effects of the dimensionless parameters related to the angular speed, the depth and location of a crack and the size and location of a concentrated mass on the modal characteristics of the beam are investigated numerically.
키워드
Modal Analysis(고유진동 해석); Modal Characteristic(고유진동 특성); Cantilever Beam(외팔보); Concentrated Mass(집중 질량); Open Crack(개구형 크랙); Stress Intensity Factor(응력집중계수); Natural Frequency(고유진동수); Flexibility Function(유연함수)
- 제목
- 크랙과 집중질량을 갖는 회전 외팔보의 진동 해석
- 제목 (타언어)
- Vibration Analysis of a Cracked Beam with a Concentrated Mass Undergoing Rotational Motion
- 저자
- 김민권; 유홍희
- 발행일
- 2009-01
- 저널명
- 한국소음진동공학회논문집
- 권
- 19
- 호
- 1
- 페이지
- 10 ~ 16