Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Bird Strike Analysis of Radome Using Smoothed Particle Hydrodynamics Technique

입자완화 유체동역학 기법을 이용한 레이돔 조류충돌해석

  • Yun, Gangsik (Department of Mechanical Engineering, Chungnam National University) ;
  • Kim, Youngjin (Department of Mechanical Engineering, Chungnam National University) ;
  • Kim, Moon-soo (Department of Mechanical Engineering, Chungnam National University) ;
  • Kim, Jihyeon (Department of Mechanical Engineering, Chungnam National University) ;
  • Kim, Taehyeong (Department of Mechanical Engineering, Chungnam National University) ;
  • Yoon, Siyoung (Electro-Optronics. PGM Center, Hanwha Systems LTD.) ;
  • Park, Sungkyun (Electroic Warfare R&D Center Hanwha Systems LTD.) ;
  • Seo, Won-gu (Electroic Warfare R&D Center Hanwha Systems LTD.) ;
  • Oh, Dongho (Department of Mechanical Engineering, Chungnam National University)
  • 윤강식 (충남대학교 기계공학과) ;
  • 김영진 (충남대학교 기계공학과) ;
  • 김문수 (충남대학교 기계공학과) ;
  • 김지현 (충남대학교 기계공학과) ;
  • 김태형 (충남대학교 기계공학과) ;
  • 윤시영 (한화시스템(주) 전자광학 PGM 연구소) ;
  • 박성균 (한화시스템(주) 전자전연구센터) ;
  • 서원구 (한화시스템(주) 전자전연구센터) ;
  • 오동호 (충남대학교 기계공학과)
  • Received : 2017.07.26
  • Accepted : 2017.11.24
  • Published : 2017.12.05
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Abstract

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.

Keywords

References

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