통합 검색 | Korea Science

하동진;유홍희
- 한국소음진동공학회논문집
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- 제14권6호
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- pp.478-485
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- 2004
Vibration localization characteristics of mistuned repeated structures are investigated. The mistuning often creates significant response discrepancies among subcomponents of a repeated structure. As the result of the discrepancies, critical fatigue often occurs in a repeated structure. Therefore, it is of great importance to predict the vibration response of the mistuned repeated structures accurately. In this paper, a simplified model is employed and dimensionless parameters that influence the localization characteristics are identified. Through parameter study, two localization phenomena are investigated and compared.
https://doi.org/10.5050/KSNVN.2004.14.6.478 인용 PDF KSCI

하동진;유홍희
- 한국소음진동공학회논문집
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- 제13권12호
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- pp.911-917
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- 2003
Vibration localization characteristics of open loop repeated mistuned structures are investigated. The mistuning often creates significant response discrepancies among subcomponents of the repeated structures. As a result of the discrepancies, critical fatigue problems often occur in repeated structures. Therefore. it is of great importance to predict the vibration response of the mistuned repeated structures accurately in this Paper, a simplified model for an open-loop repeated structure is introduced and dimensionless parameters that influence the localization characteristics are identified. The effects of the parameters on the localization characteristics are investigated through numerical study.
https://doi.org/10.5050/KSNVN.2003.13.12.911 인용 PDF KSCI

강민규;유홍희
- 한국소음진동공학회논문집
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- 제12권12호
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- pp.994-1000
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- 2002
In periodically repeated cyclic structures, small property irregularity of their substructures often causes significant difference in their dynamic responses. which results in unpredicted premature failures. The small irregularity and the resulting phenomenon are called the mistuning and the vibration localization. respectively. In this paper, the vibration localization phenomena due to mistuned coupling effects are investigated. To effectively achieve the objective, a simple coupled multi-pendulum system Is employed. The results show that if there exists some coupling stiffness irregularity, vibration localization may occur and becomes more predominant as the number of substructures increases.
https://doi.org/10.5050/KSNVN.2002.12.12.994 인용 PDF KSCI

하동진;유홍희
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2003년도 추계학술대회논문집
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- pp.704-709
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- 2003
Vibration localization characteristics of repeated mistuned structures are investigated by two ways. The mistuning often creates significant response discrepancies among subcomponents of the repeated structures. As a result of the discrepancies, critical fatigue problems often occur in repeated structures. Therefore, it is of great importance to predict the vibration response of the mistuned repeated structures accurately. In this paper, a simplified model is employed and dimensionless parameters that influence the localization characteristics are first identified. Through the parameter study, the two localization phenomena are investigated and compared.
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