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논문 기본 정보

자료유형
학술저널
저자정보
조상환 (Hanwha Aerospace) 최현경 (Hanwha Aerospace) 김영신 (Hanwha Aerospace) 김성찬 (Korea Aerospace Research Institute) 김현기 (Korea Aerospace Research Institute)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제33권 제3호(통권 272호)
발행연도
2023.6
수록면
249 - 254 (6page)
DOI
10.5050/KSNVE.2023.33.3.249

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초록· 키워드

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The ground vibration test is a method of experimentally obtaining the dynamic characteristics of a structure, such as the natural frequency and natural vibration mode. It aims to verify the reliability of the numerical analysis model by comparing the numerical analysis results with the ground vibration test results or improve the numerical analysis model by reflecting on the test results. In this study, the reliability of the numerical analysis model of the fuel pylon for an aircraft was verified by comparing the natural frequency and natural vibration mode of the fuel pylon obtained through the ground vibration test and numerical analysis. This study describes the main test equipment used to perform the ground vibration test, test set-up, and test model to verify the natural vibration mode of the specimen. After setting up the ground vibration test, the points at which the main vibration modes are well excitable were determined through a preliminary test. Accordingly, the dynamic response data were collected at the corresponding points by providing excitation with an impact hammer. Finally, a frequency response analysis was performed on the response acceleration acquired from the accelerometer to identify the natural frequency and natural vibration mode of the specimen. Subsequently, the reliability of the numerical analysis model of the specimen was verified by comparing the ground vibration test results with the natural frequency and vibration mode calculated through the numerical analysis using the finite element model.

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ABSTRACT
1. 서론
2. 시험 구성 및 수행
3. 시험 결과
4. 결론
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