Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Drawbar Pull Estimation in Agricultural Tractor Tires on Asphalt Road Surface using Magic Formula

Magic Formula를 이용한 아스팔트 노면에서의 농업용 트랙터의 견인력 추정

  • Kim, Kyeong-Dae (Department of Biosystems Engineering, Seoul National University) ;
  • Kim, Ji-Tae (Department of Biosystems Engineering, Seoul National University) ;
  • Ahn, Da-Vin (Department of Biosystems Engineering, Seoul National University) ;
  • Park, Jung-Ho (Department of Biosystems Engineering, Seoul National University) ;
  • Cho, Seung-Je (Department of Bioindustrial Machinery Engineering, Jeonbuk National University) ;
  • Park, Young-Jun (Department of Biosystems Engineering, Seoul National University)
  • 김경대 (서울대학교 바이오시스템공학과) ;
  • 김지태 (서울대학교 바이오시스템공학과) ;
  • 안다빈 (서울대학교 바이오시스템공학과) ;
  • 박정호 (서울대학교 바이오시스템공학과) ;
  • 조승제 (전북대학교 생물산업기계공학과) ;
  • 박영준 (서울대학교 바이오시스템공학과)
  • Received : 2021.08.25
  • Accepted : 2021.10.11
  • Published : 2021.11.30
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Abstract

Agricultural tractors drive and operate both off-road and on-road. Tire-road interaction significantly affects the tractive performance of a tractor, which is difficult to predict numerically. Many empirical models have been developed to predict the tractive performance of tractors using the cone index, which can be measured through simple tests. However, a magic formula model that can determine the tractive performance without a cone index can be used instead of traditional empirical models as the cone index cannot be measured on asphalt roads. The aim of this study was to predict the tractive performance of a tractor using the magic formula tire model. The traction force of the tires on an asphalt road was measured using an agricultural tractor. The dynamic wheel load was calculated to derive the coefficients of the traction-slip curve using the measured static wheel load and drawbar pull of the tractor. Curve fitting was performed to fit the experimental data using the magic formula. The parameters of the magic formula tire model were well identified, and the model successfully determined the coefficient of traction of the tractor.

Keywords

Acknowledgement

본 결과물은 농림축산식품부의 재원으로 농림식품기술기획평가원의 농식품기술융합창의인재양성사업의 지원을 받아 연구되었음(과제번호: 320001-4).

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