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Unwinding Behavior of and Load Prediction for Protective Tube Around Fiber-Optic Cable

보호 튜브의 풀림 거동 및 하중 예측

  • Kim, Kun Woo (School of Mechanical Engineering, Pusan Nat'l Univ.) ;
  • Lee, Jae Wook (Construction Equipment R & D Group, Korea Institute of Technology) ;
  • Kim, Hyung Ryul (Agency for Defense Development) ;
  • Yoo, Wan Suk (School of Mechanical Engineering, Pusan Nat'l Univ.)
  • Received : 2013.05.27
  • Accepted : 2013.12.11
  • Published : 2014.03.01

Abstract

As a fiber-optic cable is being unwound, it is protected by a tube that is designed to prevent unwinding problems such as tangling and unintentional cutting. In addition, a guide body is separated from the protective tube if a shear pin breaks when the maximum allowable load is exceeded. Therefore, it is important to analyze and predict the unwinding behavior of the protective tube, as well as the load on the shear pin, to enhance the likelihood of a successful operation when laying cables at extreme depths. In this study, the protective tube and the guide body are modeled with particles and are constrained with a constant-length constraint. The load on the shear pin was verified against experimental data, and the unwinding behavior was predicted from the load prediction results.

심해 군사 작전에서 유도체의 타격 성능 향상은 모함과 유도체가 광 케이블을 통하여 안정적인 통신을 유지함으로써 가능하다. 이 때 광 케이블은 엉킴 및 절단과 같은 풀림 불량을 방지하기 위해 보호 튜브에 의해 보호된다. 또한 보호 튜브는 전단 핀에 의해 유도체와 연결되며, 전단 핀의 파손에 의해 유도체는 보호 튜브와 분리된다. 따라서 본 연구에서는 유도체 및 보호 튜브를 모델링하고, 유도체의 운동에 따른 보호 튜브의 풀림 거동을 분석하며 전단 핀에 작용하는 동적 하중을 예측한다. 유도체와 보호 튜브는 질점으로 구성하며, 일정 길이 구속으로 연결한다. 전단 핀에 작용하는 하중은 실험 결과와 비교 검증하며, 이를 바탕으로 보호 튜브의 거동을 예측한다.

Keywords

References

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