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[학술저널]

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정회인(LIGNEX1) 박지환(LIGNEX1) 손동훈(LIGNEX1) 장종윤(LIGNEX1)

DOI : 10.5050/KSNVE.2019.29.4.462

이 논문을 2019-09-24 에 이용했습니다.

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초록

In this article, we evaluate the fatigue life of an aircraft external store under real dynamic loads of a helicopter. For estimation of fatigue life of an aircraft external store, we first measured the vibration after mounting an aircraft external store on the actual helicopter and analyzed the PSD. Then, the PSD for accelerated life test was calculated using VRS and time scaling. The natural frequency obtained from the ODS test was compared with the natural frequency of the FEM analysis. Moreover, the response PSD of the ODS test and the response PSD of the FEM analysis were compared. The stress cycle through the SN curve of the material was analyzed. The cumulative damage factor was analyzed via Miner’s rule. Finally, the fatigue life was predicted.

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ABSTRACT
1. 서론
2. 하중 분석 및 도출
3. 동특성 분석 및 피로 수명 예측
4. 결론
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