Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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A Study on the Vibration Analysis and Optimization for the Composite Optical Structure of an Aircraft

복합재료를 적용한 항공기용 카메라 구조 경량화 설계 및 최적조건 선정에 관한 연구

  • 김병준 (국립 공주대학교 공과대학 기계공학과 대학원) ;
  • 이준호 (국립 공주대학교 광공학과) ;
  • 이행복 (국방과학 연구소) ;
  • 정대윤 (국방과학 연구소) ;
  • 전성식 (국립 공주대학교 공과대학 기계자동차공학부)
  • Received : 2012.12.05
  • Accepted : 2012.12.24
  • Published : 2012.12.31
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Abstract

This paper presents the vibration characteristics and the optimization using the orthogonal array about applied composite optical structure of an aircraft. To acquire the vibration characteristics for stable line of sight, modal analysis are performed by using multi-body program ADAMS. And to optimize optical structure, for design variables were selected, larger-the-better characteristics were considered using results of S/N ratio and orthogonal array $L_9(3^4)$. When bearing constraints are selected, radial, axial and moment stiffness value are used to analysis for optimization until now. But B.S.R which is non-dimensional parameter is proposed, structures including bearings can be used for optimization. And then having a result of lager-the-better, the optimized values of each design variable were successfully suggested.

본 연구에서는 항공기용 카메라구조의 진동특성 파악하고 최적조건을 선정하여 구조의 경량화 설계 방안을 제시하였다. 다물체 동력학 프로그램인 ADAMS를 이용하여 모드해석을 진행하고, 해석 결과를 가지고 직교법을 이용하여 항공기용 카메라 구조의 경량화 및 최적조건을 선정하여 이전의 항공기용 카메라 구조와 모드해석 결과를 서로 비교하였다. 또한, 기존에 제시 되어진 베어링의 차원의 값을 무차원의 값으로 전환하여 보다 효과적인 베어링의 기준을 선정하였으며, 비교된 결과를 토대로 최적화된 항공기용 카메라 구조가 제안되었다.

Keywords

References

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