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A Study on the sealing Characteristic of Automobile Waterproof Connector

자동차용 방수커넥터의 밀봉특성에 관한 연구

  • Ko, Young-Bae (Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology) ;
  • Park, Hyung-Pil (Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology) ;
  • Lee, Jeong-Won (Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology) ;
  • Cha, Baeg-Soon (Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology)
  • 고영배 (한국생산기술연구원 금형기술연구실용화그룹) ;
  • 박형필 (한국생산기술연구원 금형기술연구실용화그룹) ;
  • 이정원 (한국생산기술연구원 금형기술연구실용화그룹) ;
  • 차백순 (한국생산기술연구원 금형기술연구실용화그룹)
  • Received : 2014.03.12
  • Accepted : 2014.04.10
  • Published : 2014.04.30

Abstract

Liquid silicone rubber(LSR) has been applied to various products such as electronic devices owing to its excellent thermal and chemical resistance. Hyperelastic materials, however, have properties distinguished from general metal materials. Hyperelastic materials show elastic behaviors in the range of large deformation in which load has the nonlinear relation with deformation. In addition, they have characteristics of nonlinearity, incompressibility, in large scale. On account of such characteristics, there are many difficulties in design and production using these materials. In this study, the load-deformation relation obtained from tension and compression tests was applied to finite element analysis in order to design waterproof connectors for automobiles. Furthermore, the effectiveness of the finite element analysis was confirmed by comparing the results of analysis with those of performance tests.

본 액화 실리콘 고무는 내열성 및 내화학적 우수성으로 전자 제품 및 다양한 제품에서 활용되고 있다. 하지만 초탄성 재료는 일반 금속재료와 다른 특성을 보인다. 초탄성 재료는 하중과 변형이 비선형 관계를 보이는 대변형 범위에서도 탄성거동을 나타내는 특성을 지니며, 비선형, 비압축성 및 대형의 특성을 지니고 있다. 이러한 특성 때문에 제품을 설계 및 생산 하기위해는 기능적 측면을 고려한 소재의 특성에 대한 물성 확보가 반드시 필요하기 때문에 현장에서 많은 어려움이 있다. 본 논문에서는 자동차용 방수커넥터 설계를 위해 소재의 인장, 압축 시험으로부터 구한 하중-변형관계를 이용하여 이를 유한 요소 해석에 적용한 결과를 비교하였으며, 해석결과와 제품의 성능 테스트 결과를 비교하여 방수커넥터용 씰의 경우 어떠한 소재특성을 적용할 경우 유용한 결과를 도출할 수 있는지를 확인하였으며, 이를 통해 제품 개발에 유용성을 확인하였다.

Keywords

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