Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Structural Analysis and Manufacturing of Polyethylene Canoes

폴리에틸렌 카누의 구조해석과 제조에 관한 연구

  • Park, Chan-Kyun (Dept. of Vehicle Engineering, Kangwon Nat'l Univ.) ;
  • Kim, Min-Gun (Dept. of Mechanical & Biomedical Engineering, Kangwon Nat'l Univ.) ;
  • Cho, Seok-Swoo (Dept. of Vehicle Engineering, Kangwon Nat'l Univ.)
  • 박찬균 (강원대학교 자동차공학과) ;
  • 김민건 (강원대학교 기계의용공학과) ;
  • 조석수 (강원대학교 자동차공학과)
  • Received : 2010.07.05
  • Accepted : 2010.12.27
  • Published : 2011.03.01
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Abstract

Canoes are usually made from wood or FRP. However, today environment-friendly materials are preferred, and hulls made of FRP are prohibited in some countries. Polyethylene can be recycled and so is suitable for synthetic canoe construction. We used 3D Boat-Design to determine the hydrostatic properties of the canoe. Flow-structure coupled analysis was performed using ANSYS Workbench R12.1. The hull pressure and passenger weight were considered as canoe loading factors. The key parameters for the canoe are the design variables. The constraints are as follows: (1) The maximum stress must not exceed 50% of the polyethylene yield stress; and (2) the canoe weight must not exceed 50 kg. The optimal structural conditions were obtained by the response optimization process. The components of the canoe hull were manufactured from polyethylene pipes and joined by thermal fusion methods. Tests showed that the polyethylene canoe had better performance than existing canoes.

일반적으로 카누는 목재나 FRP 등으로 제작된다. 그러나 소비자들은 기존의 재료에 비하여 염가이면서 친환경 재료를 선호한다. 특히, 선진국에서는 일부 선박에 대하여 FRP 선체 제조를 금지하는 법안을 발표하고 이에 따른 국제협약을 제정하였다. 폴리에틸렌은 식료품 용기나 의료용 용기로 널리 사용되는 재료로서 리사이클 가능한 재료이다. 본 연구에서는 카누 선체 재료로 폴리에틸렌으로 선정하였으며 선형설계는 상용 선형 설계 프로그램인 3D Boat Design을 이용하여 수행하였다. 카누 구조하중은 우선 ANSYS CFX R12.1을 이용하여 선체에 작용되는 압력 분포를 구하고 이것을 ANSYS WORKBENCH R12.1로 넘겨 선체 압력 하중과 패들러 하중을 동시에 고려하였다. 카누 각 치수를 설계변수화하여 응력과 무게를 최소화하는 최적화 과정을 반응표면방법과 만족도 함수를 이용하여 수행하였다. 개발된 카누는 운항시험에서 직진성이나 안정성은 우수하나 운반성과 선회성 및 속도는 보통인 것으로 판단된다.

Keywords

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Cited by

  1. Structural design of transom pod for outboard motor in polyethylene boat vol.31, pp.12, 2017, https://doi.org/10.1007/s12206-017-1118-9