Postdoctoral backup

[accordion] [panel title=”Akbar Bagri”]

Bagri-CE

307 Latrobe Hall
3400 N. Charles Street
Baltimore, MD 21218
e-mail: [email protected]

 

Education:

PhD. Engineering: Mechanics of Solids, Brown University, Providence, RI, USA (2013).
MA. Chemistry, Brown University, Providence, RI, USA (2011).
MSc. Applied Mechanics, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran (2003).

Current Project Title:

Fatigue modeling of Ni-based superalloys using crystal plasticity.

Awards:

NSF Fellowship, Workshop on Materials Defects: Mathematics, Computation, and Engineering, Institute for pure and applied mathematics (IPAM), UCLA, USA, Sep. 2012.

Papers:

  • Bagri, A., Hanson, J. P., Lind, J., Kenesei, P., Suter, R. M., Gradečak, S., Demkowicz, M. J., Measuring grain boundary character distributions in Ni-base alloy 725 using high-energy diffraction microscopy, Metallurgical and Materials Transactions A, Vol. 48, No. 1, pp. 354-361, 2017.
  • Bagri, A., Kim, S-P., Ruoff, R. S., Shenoy, V. B., Thermal Transport across Twin Grain Boundaries in  Polycrystalline Graphene from Non-equilibrium Molecular Dynamics Simulations, NANO LETTERS, Vol. 11, No. 9, pp. 3917-3921, 2011.Featured as a Research Highlight in NATURE MATERIALS 10,724(2011) : Heat at the borders  by Fabio Pulizzi (Senior Editor).
  • Bagri, A., Mattevi, C., Acik, M., Chabal, Y. J., Chhowalla, M., Shenoy, V. B., Structural Evolution During the Reduction of Chemically Derived Graphene Oxide, NATURE CHEMISTRY, Vol. 2, pp. 581-587, 2010.
    Featured In:  Science Daily: New Approach to Finding and Removing Defects in Graphene
    Also in NSF Science 360, American Association for the Advancement of Science (AAAS), PHYSORG.
  • Bagri, A., Grantab, R., Medhekar, N., Shenoy, V. B., Stability and Formation Mechanisms of Carbonyl- and Hydroxyl-Decorated Holes in Graphene Oxideoxide, J. Physical Chemistry C, Vol. 114, pp. 12053-12061, 2010.
  • Akbari, A., Bagri, A., Bordas, S. P. A., Rabczuk, T., Analysis of Thermoelastic Waves in a Two- Dimensional Functionally Graded Materials Domain by the Meshless Local Petrov-Galerkin (MLPG) Method, CMES-Computer Modeling in Engineering & Sciences, Vol. 65, Issue 1, pp. 27-74, 2010.
  • Bagri, A., Eslami, M. R., A Unified Generalized Thermoelastisity; Solution for Cylinders and Spheres, Int. J. Mechanical Sciences, Vol. 49, Issue 12, pp. 1325-1335, 2007.
[/panel] [panel title=”Jiahao Cheng”]

JiahaoCheng

307 Latrobe Hall
3400 North Charles Street
Baltimore, MD 21218
e-mail: [email protected]

 

Education:

PhD. Civil Engineering, Mechanics of Material Major, Johns Hopkins University, USA, 2016.

M.S. in Civil Engineering, Mechanics of Material Major, Johns Hopkins University, USA, 2015.

B.S., in the department of Physics and Astronomy, Shanghai Jiaotong University, China, 2008.

Research Area:

Micro-crack nucleation and propagation, phase field method, hierarchical FEM, crystal plasticity, wavelets decomposition based model multi-scaling, coupling strategy, parallel computing.

Current Project Titles:

  1. Phase field modeling of crack propagation in Ti-6Al-4V alloy microstructure
  2. Adaptive wavelet based enrichment of crystal plasticity finite element model

Awards:

  • Finalist, 27th Robert J. Melosh Medal Competition, Duke University, Durham, NC, 2016. “FE Simulation of Deformation Twinning in Hexagonal Close-Packed Materials with Numerical Acceleration and Stabilization“.
  • Third Place Award, Computational Mechanics Student Poster Competition, Engineering Mechanics Institute Conference, Northwestern University, Evanston, IL, 2013. “Modeling Deformation and Twin Nucleation in Magnesium Alloy AZ31 Microstructure”.

Book Chapter:

  • J. Cheng and S. Ghosh, Simulating Discrete Twin Evolution in Magnesium Using a Novel Crystal Plasticity Finite Element Model, Magnesium Technology, 2017

Papers:

Conferences:

  • J. Cheng and S. Ghosh, “Simulating Discrete Twin Evolution in Magnesium Using a Novel Crystal Plasticity Finite Element Model”, The Minerals, Metals & Materials Society 146th Annual Meeting and Exhibition, San Diego, CA, 2017
  • J. Cheng and S. Ghosh, “Crystal plasticity FE models for predicting deformation and twinning in magnesium alloys.” The International Union of Theoretical and Applied Mechanics (IUTAM) symposium, Baltimore, MD, 2016
  • J. Cheng and S. Ghosh, “Crystal plasticity finite element based modeling of deformation-twinning induced failure in magnesium alloy.” Conference of the ASCE Engineering Mechanics Institute, Nashville, TN, 2016
  • J. Cheng and S. Ghosh, “Advanced Crystal Plasticity FE Modeling of Discrete Twin Evolution in Magnesium and its Alloys” The Minerals Metals & Materials Society 144th Annual Meeting and Exhibition, Orlando, FL, 2015.
  • J. Cheng and S. Ghosh, “Crystal plasticity based constitutive modeling and finite element simulation of Magnesium and its alloy,” US National Congress of Theoretical and Applied Mechanics, Michigan State University, East Lansing, Michigan, 2014.
  • J. Cheng and S. Ghosh, “Modeling failure in Magnesium and its alloy with geometrically necessary dislocations enhanced CPFEA” Conference of the ASCE Engineering Mechanics Institute, Northwestern University, Evanston, IL, 2013
  • J. Cheng and S. Ghosh, “Modeling plastic deformation and shear banding in bulk metallic glasses. “International Workshop on Computational Mechanics of Materials, Washington D.C., 2012.
[/panel]

 

[/panel] [panel title=”Reza Yaghmaie”]

RezaYaghmaiePhoto

305 Latrobe Hall
3400 N. Charles Street
Baltimore, MD 21218
e-mail: [email protected]

Education:

  • PhD, Civil Engineering, Johns Hopkins University
  • M.S.E., Earthquake Engineering, University of Tehran
  • BS, Civil Engineering, Sharif University of Technology

Current Project Title:

Computational Modeling of Coupled Electro-Magnetic-Dynamical Systems

Award:

Best Paper Award, ASCE-EMI Student Paper Competition in Dynamics at the Engineering Mechanics Institute (EMI) Conference, held at Vanderbilt University in Nashville, Tennessee, May 22 to May 25, 2016.

Papers:

 

            • R.Yaghmaie, S.Ghosh, “Computational Modeling of Finite Deformation  Piezoelectric Material Behavior  Coupling Transient Electrical and Mechanical Fields”, Journal of Computational Physics. Vol. 373 (2018) pp. 148–170, doi: 10.1016/j.jcp.2018.06.070.
            • R.Yaghmaie, S.Ghosh, “Multi-Time Scaling Based Modeling of Transient Electro-Magnetic Fields in Vibrating Media with Antenna Applications”, Computational Mechanics.  Vol. 60 (1) (2017) pp. 117–141, doi:10.1007/s00466-017-1396-1.
            • R.Yaghmaie, S.Guo, S.Ghosh, “Wavelet Transformation Induced Multi-Time Scaling (WATMUS) Model for Coupled Transient Electro-Magnetic and Structural Dynamics Finite Element Analysis”, Computer Methods in Applied Mechanics and Engineering. 303 (5) (2016) pp. 341–373, doi:10.1016/j.cma.2016.01.016.

Conferences:

            • R.Yaghmaie, S.Ghosh, “Multi-time scale simulations of coupled transient electro-mechanical fields for modeling finite strain piezoelectricity”, 12th World Congress in Computational Mechanics (WCCM XII), New York, NY,USA, July 2018.
            • R.Yaghmaie, S.Ghosh, “Two scale wavelet transformation based multi-time scale (WATMUS) method for simulating coupled transient electro-mechanical fields with evolving damage”, 18th US National Congress on Theoretical and Applied Mechanics (USNCTAM XVIII), Northwestern University, Evanston, IL, USA, June 2018.
            • R.Yaghmaie, S.Guo, S.Ghosh, “Multi-time scale based simulations of coupled transient electro-magnetic dynamic mechanical fields in finite deformations”, Engineering Mechanics Institute (EMI 2016) and Probabilistic Mechanics and Reliability Conference (PMC 2016) of American Society of Civil Engineers (ASCE), Vanderbilt University, Nashville, TN, USA, May 2016.
            • R.Yaghmaie and S.Ghosh, “Wavelet transformation induced multi-time scaling (WATMUS) model for coupled transient electro-magnetic and structural dynamics finite element analysis”, 13th U.S. National Congress on Computational Mechanics   (USNCCM XIII), San Diego, CA, USA, July 2015
            • .R.Yaghmaie, S.Guo, S.Ghosh, “Wavelet transformation based multi-time scaling method for FE simulations of coupled transient electromagnetic nonlinear dynamical systems”, 17th U.S. National Congress on Theoretical and Applied Mechanics (USNCTAM XVII), Lansing, MI, USA, June 2014.
            • R.Yaghmaie, S.Guo, S.Ghosh, “Simulating coupled transient electromagnetic-large deformation dynamical mechanical systems using a novel multi-time scaling method”, Engineering Mechanics Institute Conference (EMI 2013) of American Society of Civil Engineers (ASCE), Northwestern University, Evanston, IL, USA, August 2013.
[/panel] [/accordion]