Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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Study on Shear Behavior Characteristics of Granular Material using DEM

DEM을 이용한 조립재료의 전단거동 특성에 관한 연구

  • Jo, Seon-Ah (Dept. of Civil & Environmental System Engineering, Konkuk University) ;
  • Jeong, Sun-Ah (Dept. of Civil and Environmental System Engineering, Konkuk University) ;
  • Lee, Seok-Won (Dept. of Civil and Environmental System Engineering, Konkuk University) ;
  • Cho, Gye-Chun (Dept. of Civil and Environmental Engineering, KAIST) ;
  • Chun, Youn-Chul (Domestic Civil Engineering Business Department, Samsung C&T Corporation)
  • 조선아 (건국대학교 사회환경시스템공학과) ;
  • 정선아 (건국대학교 사회환경시스템공학과) ;
  • 이석원 (건국대학교 사회환경시스템공학과) ;
  • 조계춘 (한국과학기술원 건설 및 환경공학과) ;
  • 천윤철 (삼성물산 국내토목사업부)
  • Published : 2009.03.27
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Abstract

Factors influencing shear behavior of granular material include particle size, shape, distribution, relative density, particle crushing, etc. In this study, these factors are characterized by viewpoint of shear behavior using numerical analysis based on DEM. Geometrical particle shape is represented by a combination of small circular particles and influence of particle shape on crushing is studied through relative comparisons between clump (uncrushable) and cluster (crushable) models which are modeled using DEM. Also, particle shape is quantified by the dimensionless parameters such as circularity and convexity. The results indicate that particle shape indexes have a negative association with internal friction angle. Also, internal friction angle becomes reduced and failure envelop curve becomes nonlinear due to the particle crushing. It is also found that numerical results are quite good agreement with the experimental test conducted in this study.

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