MOHAMMAD HADI MEHRANPOUR
 
 
About Me
I am currently pursuing a PhD. degree in Mining and Geological Engineering from The University of Arizona. I am also a Graduate Research Assistant in Rock Mass Modeling and Computational Rock Mechanics Laboratories. My major is rock mechanics and I am also working on 'Development of a new rock mass strength criterion for rock mass is having non-orthogonal fracture systems' under the supervision of professor Kulatilake. During this research a synthetic material with different joint sets is tested in polyaxial (true-triaxial) stress condition. Then a comprehensive model is developed through the numerical modeling of these tests and conventional tests (uniaxial compression test, triaxial test, Brazilian test and direct shear test) with PFC software. Finally by running this model in different boundary conditions and joint sets' geometry we will develop the new strength criteria.

I obtained my Master and Bachelor degrees as the top student in University of Tehran. During my master's program I developed and continued my previous works on time dependent behavior of rocks focusing on creep and relaxation behavior of rock salts and published some co-authored articles in ARMA and EuroRock conferences. Moreover I chose 'Study on shear behavior of rock joints by direct shear test under CNL & CNS boundary conditions tests' as my master's thesis topic under the supervision of Dr. Moosavi. I introduced new 2D and 3D roughness parameters based on Fourier analysis and developed new joint shear criteria for Constant Normal Stiffness boundary condition based on these new parameters.

In my undergraduate thesis I started to study on the time dependent behavior of clay and rocksalt as a thesis project and initiated my collaboration with Dr. Moosavi's Rock Lab group. During my bachelor's years I did two internships in EACMCO (Eastern Alborz Coal Mines Co) and IWPCO (Iran Water & Power Resources Co.) in Iran.

I should mention that I was a research assistant in rock mechanics laboratory in University of Tehran and I spent more than 5 years in this lab. During these years I designed 4 apparatuses for his researches (Rock Joint Surface laser 3D Scanner, Developing shear box for CNL & CNS test for MTS machine, Impression relaxation apparatus and Compression creep apparatus). I also did different rock mechanics tests such as the Durability test, the Brazilian test, the Shear test, the Uniaxial and Triaxial tests, the Creep and Relaxation tests, the Swelling test and various fracture mechanics tests).

My research interests
  • Numerical modeling in Geomechanics
  • Intact rock and Rock mass failure criteria
  • Fault mechanics and shear failure criteria
  • Hydraulic fracturing and rock fracture mechanics
  • Time dependent properties of rocks and faults
  • Rock joints roughness quantification

My publications
    Journals:
    [1] Mehranpour, M.H., Kulatilake, P.H.S.W. (2017). Improvements for the Smooth Joint Contact Model of the Particle Flow Code and its applications. Computers and Geotechnics. 87,163-177. http://dx.doi.org/10.1016/j.compgeo.2017.02.012
    [2] Mehranpour, M.H., Kulatilake, P.H.S.W. (2016). Comparison of six major intact rock failure criteria using a particle flow approach under true-triaxial stress condition. Journal of Geomechanics and Geophysics for Geo-Energy and Geo-Resources. 2(4), 203-229. http://dx.doi.org/10.1007/s40948-016-0030-6

    Conferences:
    [1] Mehranpour, M.H. Kulatilake, P.H.S.W. (2017). Modifications for the Smooth Joint Contact Model in the Particle Flow Code. 51th US Rock Mechanics/Geomechanics Symposium; San Francisco, USA. (Download: Post Print file, OnePetro)
    [2] Mehranpour, M.H. (2016). Introduction of new roughness parameters to quantify rock joints surface using Fourier analysis. 50th US Rock Mechanics/Geomechanics Symposium; Houston, USA. (Download: Post Print file, OnePetro)
    [3] Tavanaei, F., Mehranpour, M.H., Moosavi, M. (2014). The comparison of impression and relaxation creep tests with different diameter of indenter in salt rock. The Eurock 2014 ISRM international symposium on Rock mechanics structures on and in rock masses; Vigo, Spain. (Download: Post Print file, OnePetro, Taylor & Francis, Google books)
    [4] Moosavi, M., Rafsanjani, H.N., Mehranpour, M.H., Nazem, A., Shirazi, A.N. (2013). An investigation of surface roughness measurement in rock joints with a 3D scanning device. Rock Characterization, Modelling and Engineering Design Methods. 119-125. (Download: OnePetro, Taylor & Francis, Google books)
    [5] Rassouli, F.S., Mehranpour, M.H., Moosavi. M. (2012). Using Multistage Creep Tests to Determine the Parameters of Power Law Creep Equation. The Eurock 2012 symposium on Rock Engineering and Technology for Sustainable Underground Construction; Stockholm, Sweden. (Download: Post Print file, OnePetro)
    [6] Mehranpour, M.H., Rassouli, F.S., Moosavi, M. (2012). The impression relaxation test, a new relaxation method for determination the time dependent characteristics of rock salt. The 46th US Rock Mechanics /Geomechanics Symposium; Chicago, USA. (Download: Post Print file, OnePetro)
    [7] Rassouli, F.S., Mehranpour, M.H., Moosavi, M. (2012). Study of Punch Tip Effect on Creep of Materials in Impression Test. The 46th US Rock Mechanics/Geomechanics Symposium; Chicago, USA. (Download: Post Print file, OnePetro)
    [8] Rassouli, F.S., Mehranpour, M.H., Moosavi. M. (2011). A comparison between compression and impression creep techniques using finite element method. The 9th Euroconference on Rock Physics and Geomechanics, Trondheim, Norway. (Download: Abstract)
    [9] Rafsanjani, H.N., Mehranpour, M.H., Moosavi, M., (2011). The construction of rock joints surface scanner apparatus. 3rd International and 12th National Conference on Manufacturing Engineering; Tehran, Iran (In Farsi and English Abstract). (Download: Paper file, CIVILICA)
    [10] Rassouli, F.S., Moosavi. M., Mehranpour, M.H. (2010). The effects of different boundary conditions on creep behavior of soft rocks. The 44th U.S. Rock mechanics symposium and 5th U.S. Canada symposium, Salt Lake City, Utah, USA.