티모센코 보 이론에 따른 초기 비틀림각을 갖는 경사기능재 블레이드의 진동 해석Vibration Analysis of Pre-twisted Blades with Functionally Graded Material Properties Based on Timoshenko Beam Theory
- Other Titles
- Vibration Analysis of Pre-twisted Blades with Functionally Graded Material Properties Based on Timoshenko Beam Theory
- Authors
- 유홍희; 오유택
- Issue Date
- Oct-2014
- Publisher
- 한국소음진동공학회
- Keywords
- Bending vibration (굽힘진동); Pre-twist angle (초기 비틀림각); Functionally graded material (경사기능재료); Timoshenko beam theory (티모센코 보 이론); Natural Frequency (고유진동수)
- Citation
- 한국소음진동공학회 2014년 추계학술대회논문집, pp.285 - 287
- Indexed
- OTHER
- Journal Title
- 한국소음진동공학회 2014년 추계학술대회논문집
- Start Page
- 285
- End Page
- 287
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/158859
- ISSN
- 1598-2548
- Abstract
- Equations of motion for the vibration analysis of rotating pre -twisted beams with functionally graded material properties are derived in this paper. Based on Timoshenko beam theory, the effects of shear and rotary inertia are considered. The pre-twisted beam has a rectangular cross-section and is mounted on a rotating rigid hub with a setting angle. Functionally graded material (FGM) properties are considered along the height direction of the beam. The equations of stretching and bending motion are derived by Kane’s method employing hybrid deformation variables. To validate the derived equations, natural frequencies of a rotating FGM pre -twisted beam are compared to those obtained by a commercial software ANSYS. The effects of the pre -twisted angle, slenderness ratio, hub radius, volume fraction exponent, and angular speed on the modal characteristics of the system are investigated with the proposed model.
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