Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Numerical Prediction of Permanent Deformation of Automotive Weather Strip

자동차용 웨더스트립의 영구변형 예측

  • Park, Joon-Chul (Polymeric Materials Research Team, Advanced Technology Center R&D Division for Hyundai Kia Motors Department of Mechanical Engineering) ;
  • Min, Byung-Kwon (Polymeric Materials Research Team, Advanced Technology Center R&D Division for Hyundai Kia Motors Department of Mechanical Engineering) ;
  • Oh, Jeong-Seok (Polymeric Materials Research Team, Advanced Technology Center R&D Division for Hyundai Kia Motors Department of Mechanical Engineering) ;
  • Moon, Hyung-Il (Department of Mechanical and Mechatronics Engineering, Kangwon National University) ;
  • Kim, Heon-Young (Department of Mechanical and Mechatronics Engineering, Kangwon National University)
  • 박준철 (현대자동차 고분자재료연구팀) ;
  • 민병권 (현대자동차 고분자재료연구팀) ;
  • 오정석 (현대자동차 고분자재료연구팀) ;
  • 문형일 (강원대학교 기계메카트로닉스공학과) ;
  • 김헌영 (강원대학교 기계메카트로닉스공학과)
  • Received : 2009.10.22
  • Accepted : 2009.12.14
  • Published : 2010.07.01
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Abstract

The automotive weather strip has functions of isolating of water, dust, noise and vibration from outside. To achieve good sealing performance, weather strip should be designed to have the high contact force and wide contact area. However, these design causes excessive permanent deformation of weather strip. The causes of permanent deformation is generally explained to be the chemical material detrioration and physical variation and cyclic loading, etc. This paper introduces a numerical method to predict the permanent deformation using the time dependent viscoelastic model which is represented by Prony series in ABAQUS. Uniaxial tension and creep tests were conducted to obtain the material data. And the lab. test for the permanent deformation was accelerated during shorter time, 300 hours. The permanent deformation of weather strip was successfully predicted under the different loading conditions and different section shapes using the suggested numerical process.

Keywords

References

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