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Optimal tread design for agricultural lug tires determined through failure analysis

Hyun Seok Song, Kyung Seok Sim, Tae Won Park
  • Hyun Seok Song
    Korea Automotive Technology Institute, Cheonan-si, Korea, Republic of
  • Kyung Seok Sim
    Korea Automotive Technology Institute, Cheonan-si, Korea, Republic of
  • Tae Won Park
    Department of Mechanical Engineering, Ajou University, Suwon-Si, Korea, Republic of | park@ajou.ac.kr

Abstract

Agricultural lug tires, commonly used in tractors, must provide safe and stable support for the body of the vehicle and bear any additional load while effectively traversing rough, poor-quality ground surfaces. Many agricultural lug tires fail unexpectedly. In this study, we optimised and validated a tread design for agricultural lug tires intended to increase their durability using failure analysis. Specifically, we identified tire failure modes using indoor driving tests and failure mode effects analysis. Next, we developed a threedimensional tire model using the Ogden material model and finite element method. Using sensitivity analysis and response surface methodology, we optimised the tread design. Finally, we evaluated the durability of the new design using a tire prototype and drum test equipment. Results indicated that the optimised tread design decreased the tire tread stress by 16% and increased its time until cracking by 38% compared to conventional agricultural lug tires.

Keywords

Agricultural tire; central composite design; contact analysis; finite element method; optimisation; response surface method; tire tread design.

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Submitted: 2017-03-02 09:35:52
Published: 2018-04-05 12:44:38
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Copyright (c) 2018 Hyun Seok Song, Kyung Seok Sim, Tae Won Park

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