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Dilation angle in bonded particle simulation of rock

  • A. FakhimiEmail author
  • S. Norouzi
Article

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.

Keywords

Micromechanical model Numerical simulation Bonded particle model Dilation angle 

Notes

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Copyright information

© OWZ 2018

Authors and Affiliations

  1. 1.Department of Mineral EngineeringNew Mexico Institute of Mining and TechnologySocorroUSA
  2. 2.School of Civil and Environmental EngineeringTarbiat Modares UniversityTehranIran

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