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A Study on the Fatigue Characteristics and Life Prediction of the Tire Sidewall Rubber

타이어 사이드월 고무의 피로특성 및 수명예측에 관한 연구

  • Moon, Byungwoo (Dept. of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Kim, Yongseok (Dept. of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Jun, Namgyu (Dept. of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Koo, Jae-Mean (Dept. of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Seok, Chang-Sung (Dept. of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Hong, Ui Seok (Polymeric Materials Research Team, Hyundai Motor Group) ;
  • Oh, Min Kyeong (Polymeric Materials Research Team, Hyundai Motor Group) ;
  • Kim, Seong Rae (R&D Center, Nexen Tire Corporation)
  • 문병우 (성균관대학교 기계공학부) ;
  • 김용석 (성균관대학교 기계공학부) ;
  • 전남규 (성균관대학교 기계공학부) ;
  • 구재민 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부) ;
  • 홍의석 (현대자동차 고분자재료연구팀) ;
  • 오민경 (현대자동차 고분자재료연구팀) ;
  • 김성래 (넥센타이어 연구개발본부)
  • Received : 2017.01.24
  • Accepted : 2017.03.22
  • Published : 2017.07.01

Abstract

In the case of the UHP (Ultra high performance) tire that the demand has increased rapidly, compared with the commonly used tire, severe deformation has been observed because of the low aspect ratio. When repeated deformations are applied to the sidewall rubber, accumulated fatigue damage may cause fatigue failure. Thus, the evaluation of the durability of the tire sidewall rubber has become a very important issue to prevent accidents that occur while the vehicle is running. However, the research and design criteria for the durability performance of the tire sidewall rubber hardly exist. In this study, we suggest a lifetime prediction formula using strain energy density obtained by performing tensile tests and fatigue tests on two different kinds of the tire sidewall compounds. Additionally, the applicability of our findings for low fuel consumption tires was reviewed by converting the fatigue life of the sidewall rubber into the expected mileage of the tire.

Keywords

Fatigue Life;Strain Energy Density;Prediction Equation;Tire Sidewall Rubber

Acknowledgement

Supported by : 현대자동차

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