BALL-BEARING EFFECT ON SHEAR BEHAVIOR OF BINARY GRANULAR MIXTURE

• UEDA Takao

  Dept. of Eng. Mech. and Energy, University of Tsukuba

• MATSUSHIMA Takashi

  Dept. of Eng. Mech. and Energy, University of Tsukuba

• YAMADA Yasuo

  Dept. of Eng. Mech. and Energy, University of Tsukuba

Abstract

 The shear behavior of binary granular mixtures was studied using the 2D discrete element method (DEM). Various specimens were prepared using different volume fractions and shapes i.e., disk and peanut, of small particles. The analyses showed that the average particle rotation of both small and large particles is equivalent to the continuum rotation field. However, when a specimen contains small disks of volume fractions in the range 5% - 15%, the average particle rotation is found to be much larger than the continuum rotation that accompanies the reduction in both shear resistance and thickness of the shear band. In such specimens, it was observed that many small particles were sandwiched by two large particles and underwent considerable rotation. In this paper, this irregul ar phenomenon is referred to as the "ball-bearing effect."

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 68 (1), 1-9, 2012

  Japan Society of Civil Engineers

Keywords

• ball-bearing effect
• shear band thickness
• discrete element method (DEM)
• binary mixture

Details

• CRID: 1390282680325786368
• NII Article ID: 130004557245
• DOI: 10.2208/jscejam.68.1
• ISSN: 21854661
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed