한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2011년도 추계학술대회 논문집
- /
- Pages.191-195
- /
- 2011
- /
- 1598-2548(pISSN)
지상진동시험결과를 이용한 KC-100 항공기의 플러터 해석모델 보정
Flutter Analysis Model Tuning of KC-100 Aircraft with the Ground Vibration Test Results
초록
The airframe ground vibration tests were conducted on the KC-100 aircraft according to the regulation requirement, KAS 23.629(a)(2) and the modal characteristics for the target modes were measured. To make FE model tuning, a design sensitivity approach with engineering judgment was implemented using MSC/Nastran and Attune, a genetic algorithm based parameter optimization software. Based on the comparison between initial prediction and test results, design variables such as beam cross-sectional properties and spring stiffnesses were devised. As the results, the correlation of the FE model to the GVT results was made appropriately, meeting the goal of matching the target frequencies within 5%.