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Dilation angle in bonded particle simulation of rock

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Abstract

A model that allows micromechanical parameters to soften as a measure of plastic deformation is discussed. In particular, a microdilation angle is involved to help for calibration of macroscopic volumetric deformation. Through biaxial and shear tests numerical simulations, it is shown that macrodilation angle of bonded particle system can be controlled only when small particles are used. The genesis pressure that causes small overlap of particles has an impact on dilation angle as well and can be utilized as a controlling factor to calibrate a bonded particle material for dilation angle and post-peak behavior.

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Authors and Affiliations

  1. Department of Mineral Engineering, New Mexico Institute of Mining and Technology, Socorro, NM, 87801, USA

    A. Fakhimi & S. Norouzi

  2. School of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran

    A. Fakhimi

Authors
  1. A. Fakhimi
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  2. S. Norouzi
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Correspondence to A. Fakhimi.

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Fakhimi, A., Norouzi, S. Dilation angle in bonded particle simulation of rock. Comp. Part. Mech. 6, 195–211 (2019). https://doi.org/10.1007/s40571-018-0208-5

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  • DOI: https://doi.org/10.1007/s40571-018-0208-5

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