Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 (2012)
Volume 2 (2011)
Volume 1 (2010)
Experimental Evaluation and Discrete Element Modeling of Shale Delamination Mechanism

Enayatallah Emami Meybodi; Syed Khaliq Hussain; Mohammad Fatehi Marji

Articles in Press, Accepted Manuscript, Available Online from 15 January 2023

https://doi.org/10.22044/jme.2023.12526.2273

Abstract
  In this research work, X-ray diffraction (XRD) tests and petrographic studies are performed to analyze the mineral composition and lamination in the shale rock specimens. Afterward, point load (PL) and uniaxial compressive strength (UCS) tests are carried out on the anisotropic laminated shale rock. ...  Read More

PFC Simulation of Brazilian Tensile Strength Test in Geomaterials’ Specimens with T-shaped Non-persistent Joints

Vahab Sarfarazi; Hadi Haeri; Fereshteh Bagheri; Erfan Zarrin ghalam; Mohammad Fatehi Marji

Volume 13, Issue 4 , October 2022, , Pages 1189-1209

https://doi.org/10.22044/jme.2022.12418.2252

Abstract
  The tensile strengths of geomaterials such as rocks, ceramics, concretes, gypsum, and mortars are obtained based on the direct and indirect tensile strength tests. In this research work, the Brazilian tensile strength tests are used to study the effects of length and inclination angle of T-shaped non-persistent ...  Read More

Influence of Single Tunnel and Twin Tunnel on Collapse Pattern and Maximum Ground Movement

V. Sarfarazi; K. Asgari

Volume 13, Issue 1 , January 2022, , Pages 117-128

https://doi.org/10.22044/jme.2021.11088.2085

Abstract
  Particle Flow Code in Two Dimensions (PFC2D) was used in order to examine the influence of single tunnel and twin tunnel on the collapse pattern and maximum ground movement. Since first PFC was calibrated by the experiments, the results obtained were rendered by a uniaxial test. Further, a rectangular ...  Read More

On Propagation Mechanism of Cracks Emanating from Two Neighboring Holes in Cubic Concrete Specimens under Various Lateral Confinements

M. Davood Yavari; H. Haeri; V. Sarfarazi; M. Fatehi Marji; H. A. Lazemi

Volume 12, Issue 4 , October 2021, , Pages 1003-1017

https://doi.org/10.22044/jme.2021.10834.2054

Abstract
  The propagation mechanism of cracks emanating from two holes within the concrete specimens is studied by considering the effects of different lateral compressive stresses. The experimental part of this research work is carried out on some specially prepared pre-cracked specimens with two neighbouring ...  Read More

Effect of Confining Pressure on Is(50) Obtained by Point Load Test

V. Sarfarazi; K. Asgari

Volume 12, Issue 4 , October 2021, , Pages 1019-1028

https://doi.org/10.22044/jme.2021.10918.2070

Abstract
  In this investigation, the impact of confining pressure on the tensile strength obtained by point load test (PLT) is examined by particle flow code in two dimensions. In this regard, at first, a numerical model is calibrated using the Brazilian experimental test results. The tensile strength of the model ...  Read More

Numerical Investigation of Effect of Rock Bolt Angle on Shear Behavior of Rock Bridges

V. Sarfarazi; A. Tabaroei

Volume 11, Issue 4 , October 2020, , Pages 1007-1022

https://doi.org/10.22044/jme.2020.9580.1871

Abstract
  In this work, the effect of rock bolt angle on the shear behavior of Rock Bridges is investigated using the particle flow code in two dimensions (PFC2D) for three different Rock Bridge lengths. Firstly, the calibration of PF2D is performed to reproduce the gypsum sample. Then the numerical models with ...  Read More

Behavior of a Tunnel and its Neighboring Joint with and without Presence of Rock Bolt under Biaxial Loads; Particle Flow Code Approach

V. Sarfarazi

Volume 11, Issue 3 , July 2020, , Pages 855-864

https://doi.org/10.22044/jme.2020.9581.1872

Abstract
  In this work, the interaction between the semi-circular space and the neighboring joint with and without the presence of rock bolts was investigated using the particle flow code (PFC) approach. For this purpose, firstly, the calibration of PFC was performed using both the Brazilian experimental test ...  Read More