• Title/Summary/Keyword: 트레드 블록

Search Result 3, Processing Time 0.017 seconds

Finite Element Analysis on Residual Aligning Torque and Frictional Energy of a Tire with Detailed Tread Blocks (트레드 블록을 고려한 타이어의 잔류 복원 토크 및 마찰 에너지에 대한 유한 요소 해석)

  • 김기운;정현성;조진래;양영수
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.12 no.4
    • /
    • pp.173-180
    • /
    • 2004
  • The tread pattern of a tire has an important effect on tire performances such as handling, wear, noise, hydroplaning and so on. However, a finite element analysis of a patterned tire with detailed tread blocks has been limited owing to the complexity of making meshes for tread blocks and the huge computation time. The computation time has been shortened due to the advance in the computer technology. The modeling of tread blocks usually requires creating a solid model using a CAD software. Therefore it is a very complicated and time-consuming job to generate meshes of a patterned tire using a CAD model. A new efficient and convenient method for generating meshes of a patterned tire has been developed. In this method, 3-D meshes of tread pattern are created by mapping 2-D meshes of tread geometry onto 3-D tread surfaces and extruding them through tread depth. Then, the tread pattern meshes are assembled with the tire body meshes by the tie contact constraint. Residual aligning torque and frictional energy are calculated by using a patterned tire model and compared to the experimental results. It is shown that the calculated results of a patterned tire model are in a good agreement with the experimental ones.

A Study on the Friction of Tire Tread Rubber using High-Speed Friction Test Machine (고속 마찰 특성 평가시험기 개발을 통한 타이어 트레드 고무의 마찰에 관한 연구)

  • Lee, Jin Koo;Lee, Dong Ju
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.30 no.6
    • /
    • pp.622-628
    • /
    • 2013
  • Due to the development of compounding technology, there is a considerable increase in the number of high performance rubbers in the world. Accordingly, there are rapid growing requests about high performance tires such as UHP tire and Run-flat tire. However, it is extremely difficult to investigate the friction coefficient of tire tread rubbers. An alternative solution must be developed with the reliability of high-speed linear friction test machines. The use of friction test machines can be expected to improve rubber friction researches. In this paper, we propose a new kind of high-speed linear friction test machine. We have designed and manufactured various mechanisms for friction tests. The final goals are to design and manufacture friction test machines that can investigate friction coefficients efficiently and rapidly. The performance of the proposed high-speed linear friction test machine is evaluated experimentally; however additional study should be necessary for safer and more reliable experimentation.

Finite Element Analysis on Standing Wave Phenomenon of a Tire Considering Tread Pattern (트레드 패턴을 고려한 타이어의 스탠딩 웨이브 현상에 대한 유한 요소 해석)

  • Kim, Kee-Woon;Jeong, Hyun-Sung
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.14 no.2
    • /
    • pp.76-83
    • /
    • 2006
  • Each tire has a critical speed at which a standing wave phenomenon occurs along the circumferential direction. If the standing waves are formed, the tire temperature is rapidly increased and it leads to tire failure eventually. As the formation of the standing waves is closely related to the tire stiffness, the effect of the tread pattern needs to be studied numerically. The standing wave phenomenon of a tire model with tread pattern is predicted by an explicit finite element method. The critical speed of the tire with tread pattern is in a good agreement with the experiment and is $15{\sim}20\;km/h$ lower than that of the tire without tread pattern. The effects of the inflation pressure and the vertical load on the critical speed are also investigated by using the tire model with tread pattern.