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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 항공우주시스템공학회 International Journal of Aerospace System Engineering International Journal of Aerospace System Engineering Vol.6, No.2
- 발행연도
- 2019.12
- 수록면
- 1 - 10 (10page)
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초록· 키워드
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In this paper, the probabilistic free vibration analysis of a geometrically coupled cantilever wing with uncertain material properties is carried out using stochastic finite element (SFEM) based on first order perturbation technique. Here, both stiffness and damping of the system are considered as random parameters. The bending and torsional rigidities are assumed as spatially varying second order Gaussian random fields and represented by Karhunen Loeve (K-L) expansion. Here, the expected value, standard deviation, and probability distribution of random natural frequencies and damping ratios are computed. The results obtained from the present approach are also compared with Monte Carlo simulations (MCS). The results show that the uncertain bending rigidity has more influence on the damping ratio and frequency of modes 1 and 3 while uncertain torsional rigidity has more influence on the damping ratio and frequency of modes 2 and 3.
목차
Abstract
1. Introduction
2. Mathematical model
3. Results and discussion
4. Conclusions
References
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