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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Discrete Element Method for Defining the Dynamic Behavior and Abrasion of Gravel in Mixer Trucks during Mixing and Discharging

이산 요소법을 이용한 골재 입자의 혼합 및 배출 시 골재 거동 및 강판 마모에 관한 연구

  • Ryu, Seung-Hun (Automotive R&D Division Hyundai Motor Group.) ;
  • Woo, Ho-Kil (Division of Mechanical Engineering, ChungNam Univ.)
  • 유승훈 (현대자동차 연구개발본부) ;
  • 우호길 (충남대학교 공과대학 기계공학부)
  • Received : 2020.09.09
  • Accepted : 2020.10.12
  • Published : 2020.12.31
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Abstract

Ready-mixed concrete is unconsolidated concrete typically transported to construction sites by using mixer trucks. A proper rotation of concrete is necessary to prevent its solidification in mixer trucks during transport: in accordance with the manufacturing method and quality inspection prescribed in KSF4009, this movement is maintained after the manufacturing of concrete in professional production plants and the addition of water, solid materials, and admixtures. Unfortunately, mixer truck parts wear out over long periods of time. In order to improve the wear resistance of the main part of mixer trucks, we used a steel plate with good wear resistance or partially added a reinforcement plate. In this study, we first tested the properties of concrete (as required for the DEM), and then carried out mixing and discharge simulations to define the actual operating conditions of mixer trucks. For each condition, we calculated the amount and location of wear. The reliability of our results was finally verified by comparing them with the measurement values. Overall, this study provided basic data for an optimal design of mixer trucks: one that would reduce the vehicles' weight and production costs.

Keywords

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