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J. KIMS Technol > Volume 20(6); 2017 > Article
Journal of the Korea Institute of Military Science and Technology 2017;20(6):743-751.
DOI: https://doi.org/10.9766/KIMST.2017.20.6.743   
Bird Strike Analysis of Radome Using Smoothed Particle Hydrodynamics Technique
Gangsik Yun, Youngjin Kim, Moon-soo Kim, Jihyeon Kim, Taehyeong Kim, Siyoung Yoon, Sungkyun Park, Won-gu Seo, Dongho Oh
1Department of Mechanical Engineering, Chungnam National University
2Electro-Optronics. PGM Center, Hanwha Systems LTD.
3Electroic Warfare R&D Center Hanwha Systems LTD.
입자완화 유체동역학 기법을 이용한 레이돔 조류충돌해석
윤강식, 김영진, 김문수, 김지현, 김태형, 윤시영, 박성균, 서원구, 오동호
1충남대학교 기계공학과
2한화시스템(주) 전자광학 PGM 연구소
3한화시스템(주) 전자전연구센터
To evaluate the structural integrity of the helicopter radome, we performed bird strike analysis using SPH (Smoothed Particle Hydrodynamics) technique. Since the SPH method is a meshfree method, there is no phenomenon such as mesh tangling and it is suitable to predict the dispersion behavior of debris and debris cloud generated by high-speed impact. In order to observe the scattering direction of fractured bolts, the analysis were performed under the condition that the fracture occurs at the proof load. As a result of bird strike analysis, there is no secondary damage as well as the damage due to, the dispersion behavior of the bird model, and the scattering of the fractured bolts and radome. From the additional analysis that were performed to determine the actual bolt fracture, only plastic deformation is predicted since the maximum stress of the bolt does not exceed the ultimate stress.
Key Words: Bird Strike, Smoothed Particle Hydrodynamics, Debris, Radome


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