불확실한 인자 표본을 이용한 시스템 고유진동수의 신뢰성 설계Reliability Design of the Natural frequency of a System based on the Samples of Uncertain Parameters
- Other Titles
- Reliability Design of the Natural frequency of a System based on the Samples of Uncertain Parameters
- Authors
- 최찬규; 유홍희
- Issue Date
- Oct-2014
- Publisher
- 한국소음진동공학회
- Keywords
- Uncertainty(불확실성); Sample(표본); Extreme value theory(극치이론); Reliability design(신뢰성 설계)
- Citation
- 한국소음진동공학회 2014년 추계학술대회논문집, pp.467 - 471
- Indexed
- OTHER
- Journal Title
- 한국소음진동공학회 2014년 추계학술대회논문집
- Start Page
- 467
- End Page
- 471
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/158857
- ISSN
- 1598-2548
- Abstract
- The natural frequencies of a mechanical system are determined by the system parameters such as masses and stiffness of the system. Since material irregularities and manufacturing tolerances always exist in most of practical engineering situations, the system parameters always have uncertainties. As the uncertainties of the parameters increase, the uncertainties of the system natural frequencies also increases. Then, the reliability of the system deteriorates. So, the uncertainty of the system natural frequencies should be analyzed accurately and considered in the design of the system. In order to analyze the uncertainty of the system natural frequencies employing most of existing uncertainty analysis methods, the probability distributions of the uncertain system parameters should be identified. In most practical situations, however, identification of the probability distributions is almost impossible because of limited time and cost. For that case, the reliability should be estimated based on finite samples of the system parameters. In this paper, sample based reliability estimation method employing extreme value theory was proposed. Using the proposed estimation method, sample based reliability design of the system natural frequencies was conducted.
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