Dr Ramin Pakzad

Dr Ramin Pakzad

Research Associate

School of Engineering

Career Summary

Biography

Ramin accomplished a Master of Science degree in Iran University of Science and Technology, conducting research in the area of Rock Mechanics. He moved to Australia in 2015, starting his PhD at the University of Newcastle as a member of ARC Center of Excellence for Geo-technical Science and Engineering. During his PhD, he mainly focused on the numerical simulation of hydraulic fracturing. After finishing his PhD, Ramin was appointed as a research associate of Priority Research Center of Geo-technical Science and Engineering at the University of Newcastle. He is currently involved in a project on predicting the impact of complex joint structures on mine operations.

Qualifications

  • Doctor of Philosophy, University of Newcastle
  • Master of Mechanical Engineering, Iran University of Science & Technology

Keywords

  • 3D Modelling
  • Computational Geomechanics
  • Computational Mechanics
  • Computer Programming
  • Coupled Analysis
  • Damage Mechanics
  • Finite Element Analysis (FEM)
  • Fracture Mechanics
  • Numerical Modelling
  • Rock Mechanics

Languages

  • English (Fluent)
  • Persian (excluding Dari) (Fluent)
  • Kurdish (Fluent)

Fields of Research

Code Description Percentage
010301 Numerical Analysis 50
091402 Geomechanics and Resources Geotechnical Engineering 25
091308 Solid Mechanics 25

Professional Experience

UON Appointment

Title Organisation / Department

Teaching

Code Course Role Duration
CIVL2060 Numerical Methods
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Tutor 1/3/2018 - 31/7/2018
CIVL2050 Engineering Computations and Probability
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Tutor 1/3/2017 - 31/7/2017
ENGG1002 Introduction to Engineering Computations
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Tutor 24/7/2017 - 31/10/2019
CIVL4830 Stress & Finite Element Methods
Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Tutor 24/7/2017 - 31/10/2019
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (7 outputs)

Year Citation Altmetrics Link
2020 Pakzad R, Wang S, Sloan SW, 'Three-dimensional finite element simulation of fracture propagation in rock specimens with pre-existing fissure(s) under compression and their strength analysis', International Journal for Numerical and Analytical Methods in Geomechanics, 44 1472-1494 (2020) [C1]
DOI 10.1002/nag.3071
Co-authors Shanyong Wang
2018 Pakzad R, Wang S, Sloan S, 'Numerical study of the failure response and fracture propagation for rock specimens with preexisting flaws under compression', International Journal of Geomechanics, 18 04018070-1-04018070-13 (2018) [C1]
DOI 10.1061/(ASCE)GM.1943-5622.0001172
Citations Scopus - 7Web of Science - 6
Co-authors Shanyong Wang
2018 Pakzad R, Wang SY, Sloan SW, 'Numerical Simulation of Hydraulic Fracturing in Low-/High-Permeability, Quasi-Brittle and Heterogeneous Rocks', ROCK MECHANICS AND ROCK ENGINEERING, 51 1153-1171 (2018) [C1]
DOI 10.1007/s00603-017-1386-9
Citations Scopus - 9Web of Science - 5
Co-authors Shanyong Wang
2016 Wang Q, Wang S, Sloan SW, Sheng D, Pakzad R, 'Experimental investigation of pressure grouting in sand', SOILS AND FOUNDATIONS, 56 161-173 (2016) [C1]
DOI 10.1016/j.sandf.2016.02.001
Citations Scopus - 27Web of Science - 22
Co-authors Shanyong Wang
2016 Pakzad R, Ayatollahi MR, 'A comprehensive study on crack tip parameters of modified ring specimen for mixed-mode fracture toughness tests on brittle materials', Geotechnical Testing Journal, 39 144-156 (2016)

Copyright by ASTM Int'l all rights reserved. Modified ring (MR) specimen was suggested for investigating the mixed-mode (I/II) fracture behavior of brittle materials by rotat... [more]

Copyright by ASTM Int'l all rights reserved. Modified ring (MR) specimen was suggested for investigating the mixed-mode (I/II) fracture behavior of brittle materials by rotating the crack orientation with respect to the loading direction. Crack tip fracture parameters (KI, KII, and T stress) of MR were calculated for different geometric dimensions. To verify the numerical modeling procedure, two sets of comparisons were drawn between the results of prior studies on MR Mode I fracture behavior and those of this study, showing good agreement between the results. Through some graphs, the effects of geometric parameters on YI, YII, and T*(dimensionless crack tip parameters) and also on bII (pure Mode II crack angle) were studied. In addition, the biaxiality ratio (B), as an influential factor in the generalized maximum tangential stress (GMTS) criterion, was calculated for the whole range of mode mixity in the MR specimens. Next, fracture behavior of the specimen was discussed by means of the GMTS criterion in terms of the results obtained for the biaxiality ratio (B). At the end, as an appendix, the entire results obtained for YI, YII, T*, and bII were presented.

DOI 10.1520/GTJ20150071
Citations Scopus - 4Web of Science - 4
2014 Aliha MRM, Pakzad R, Ayatollahi MR, 'Numerical Analyses of a Cracked Straight-Through Flattened Brazilian Disk Specimen under Mixed-Mode Loading', JOURNAL OF ENGINEERING MECHANICS, 140 219-224 (2014)
DOI 10.1061/(ASCE)EM.1943-7889.0000651
Citations Scopus - 29Web of Science - 25
2008 Aliha MRM, Ayatollahi MR, Pakzad R, 'Brittle Fracture Analysis Using a Ring-Shape Specimen Containing Two Angled Cracks', INTERNATIONAL JOURNAL OF FRACTURE, 153 63-68 (2008)
DOI 10.1007/s10704-008-9280-9
Citations Scopus - 65Web of Science - 55
Show 4 more journal articles

Conference (4 outputs)

Year Citation Altmetrics Link
2018 Pakzad R, Wang S, Scott S, 'Hydraulic fracturing simulation for fully saturated quasi-brittle, heterogeneous, porous media by the random finite element method', Wuhan, China (2018)
Co-authors Shanyong Wang
2018 Pakzad R, Wang S, Sloan S, '3D Finite Element Modelling of Fracturing in Heterogeneous Rock: from Pure Solid to Coupled Fluid/Solid Analysis', Geomechanics and Geodynamics of Rock Masses: Proceedings of the 2018 European Rock Mechanics Symposium, Saint Petersburg, Russia (2018) [E1]
Co-authors Shanyong Wang
2016 Pakzad R, WANG SY, SLOAN SW, '3D Numerical investigation of damage propagation in heterogeneous quasi-brittle materials', International Conference on Geo-mechanics, Geo-energy and Geo-resources, Monash University, Melbourne, Australia (2016)
Co-authors Shanyong Wang
2008 Ayatollahi MR, Aliha MRM, Pakzad R, 'Determination of shear fracture resistance of rocks', ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008 (2008)

© ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008. All rights reserved. A hollow centre cracked disc specimen is proposed for determining shear f... [more]

© ISRM International Symposium - 5th Asian Rock Mechanics Symposium 2008, ARMS 2008. All rights reserved. A hollow centre cracked disc specimen is proposed for determining shear fracture resistance of rocks. By setting the crack line in an appropriate direction relative to the applied load, pure shear is provided along the crack line. Depending on the crack length and the centre-hole radius, the angle of pure shear deformation varies between 20o and 35o. The shear fracture test data obtained for a rock material using the proposed sample is in good agreement with the classical fracture criteria. The ratio of shear fracture resistance to tensile fracture resistance in the tested specimen is about 0.84. This figure is in the range of 0.63 to 1 predicted by the three basic fracture criteria namely the maximum tangential stress criterion, the minimum strain energy density criterion and the maximum energy release rate criterion.

Citations Scopus - 3
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Research Projects

Predicting the impact of complex joint structures on mine operations 2019 - 2020


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Dr Ramin Pakzad

Position

Research Associate
CGSE
School of Engineering
Faculty of Engineering and Built Environment

Contact Details

Email ramin.pakzad@newcastle.edu.au
Phone 40553112
Mobile 0450849380
Fax 40553112

Office

Room EA-225
Building EA
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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