Influence of Angle on Plate Penetration into Dense Granular Materials (Large-scale DEM Simulation Using Real Particle Size)

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  • Miyai Shinichiro
    Department of Mechanical Engineering, Osaka University Development Division, Komatsu Ltd. Komatsu MIRAI Construction Equipment Cooperative Research Center, Osaka University
  • Kobayakawa Murino
    Komatsu MIRAI Construction Equipment Cooperative Research Center, Osaka University
  • Tsuji Takuya
    Department of Mechanical Engineering, Osaka University Komatsu MIRAI Construction Equipment Cooperative Research Center, Osaka University
  • Tanaka Toshitsugu
    Department of Mechanical Engineering, Osaka University Komatsu MIRAI Construction Equipment Cooperative Research Center, Osaka University

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Other Title
  • 密充填乾燥粉体層への平板貫入に対する角度の影響 （実粒子サイズによる大規模DEM解析）
  • ミツジュウテン カンソウ フンタイソウ エ ノ ヘイバンカンニュウ ニ タイスル カクド ノ エイキョウ : ジツ リュウシ サイズ ニ ヨル ダイキボ DEM カイセキ

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Abstract

<p>Plate penetration into dry granular materials is numerically studied using a large-scale discrete element method (DEM). To investigate the effects penetration angle on the interactions between particles and the plate, the simulations with the different angles from 0 (vertical penetration) to 60 degree are compared. The results show that the drag force acting on the plate increases with a decrease in the penetration angle. For all cases, the formation of shear bands from the plate tip to the free surface in the bed is confirmed. The analysis of energy consumption in the bed shows that most of the energy input to the bed by the plate is locally dissipated by sliding frictions between particles in shear bands. As the penetration angle decreases, the amount of energy dissipation due to the friction increases in the shear bands formed near the plate tip.</p>

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