Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Form-finding Analysis of Cable Networks Considering a Flexibility of the Structures for Mesh Reflector Antennas

구조 유연도를 고려한 메쉬 반사판 안테나의 케이블 네트워크 형상 설계

  • 노진호 (항공우주 및 기계공학부, 한국항공대학교) ;
  • 최혜윤 (C4ISTAR 기계융합연구소, LIG넥스원) ;
  • 정화영 (C4ISTAR 기계융합연구소, LIG넥스원) ;
  • 김효태 (C4ISTAR 기계융합연구소, LIG넥스원) ;
  • 윤지현 (C4ISTAR 기계융합연구소, LIG넥스원)
  • Received : 2022.06.03
  • Accepted : 2022.06.26
  • Published : 2022.08.31
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Abstract

The purpose of this paper was to design the cable networks for mesh reflector antennas, considering the flexibility of structures. An effective form-find methodology is proposed. The whole parts of the cable networks are described by the absolute nodal coordinate formulation. Additionally, nonlinear deformation of the cable can be obtained. The form-finding analysis of the reflector with standard configuration is performed, to validate the proposed methodology. The truss ring structure is numerically modeled using the frame elements. To consider the flexibility of the truss ring as well as the cable net structure, an iteration analysis between the truss ring and the cable net under tensional forces is also performed in the form-finding process. The finial configuration of the reflector with tensioned cable networks is demonstrated.

본 논문에서는 기하학적 특성을 고려한 케이블 네트 형상설계 방법론을 제시하고, 트러스 링 그리고 케이블 네트의 구조 유연도를 고려한 반사판 안테나의 케이블 네트워크 형상 실효성을 검증한다. 기하학적 비선형성을 고려한 케이블 네트의 유한요소 모델을 개발한다. 경계조건의 하중에 따른 형상변형 해석을 통하여, 케이블 네트의 형상 설계변수 특성을 제시 한다. 프레임 요소를 이용하여 전개형 트러스 링 구조를 모델링하고 정적 하중 해석을 수행한다. 전개된 링 구조에 가해지는 장력에 의해 케이블 네트 반사판은 정확한 형상을 유지하게 된다. 가해지는 장력, 케이블 네트 그리고 트러스 링 구조의 유연도를 고려하여, 케이블 네트워크 형상설계에 반영하고 최종 형상을 제시한다.

Keywords

Acknowledgement

이 연구는 LIG NEX1 산학협력과제 지원으로 연구되었음

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