Youssef Hammi

Youssef Hammi

Associate Professor

Office: 312 Carpenter Hall / Center for Advanced Vehicular Systems 2164
Email: yhammi@me.msstate.edu
Phone: 662.325.9154 (ME) / 662.325.5452 (CAVS)

Download Curriculum Vitae
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Link to Research Group’s Website


Education

  • Ph.D., Mechanical Engineering, University of Technology of Troyes, Troyes, France, 2000
  • M.S., Mechanical Engineering, University Pierre et Marie Curie (Paris VI), Paris, France, 1995
  • B.S., Mechanical Engineering, University Pierre et Marie Curie (Paris VI), Paris, France, 1992

Experience Record

  • Associate Professor, ME Department, Mississippi State University, 2019-Present 
  • Associate Research Professor, CAVS, Mississippi State University, 2015-2019 
  • Assistant Research Professor, CAVS, Mississippi State University, 2004-2015 
  • Postdoctoral Researcher, Sandia National Laboratories, Livermore, California, 2000-2003 
  • Assistant Researcher, University of Technology of Troyes, Troyes, France, 1996-2000 
  • Structural Engineer, Laboratory of Condensed Matter, Pierre and Marie Curie University, Paris, France, 1995-1996

Subject Areas Taught

  • Finite Element in Mechanical Engineering 
  • Fatigue in Engineering Design 

Research Overview

My research interests are in plasticity, damage mechanics, continuum mechanics of metals, concrete and porous materials with emphasis on the theoretical modeling and experimental correlation. Research activities of particular interest encompass macromechanical/micromechanical constitutive modeling, inelastic behavior, damage, failure, fracture, fatigue, computational mechanics, discrete elements (DEM), user elements (UEL), Coupled Eulerian Lagrangian (CEL) and finite element analysis (FEA). I also develop stress integration algorithms for advanced material constitutive models of finite deformation elasto-visco-plasticity, creep, damage, and fatigue models and coding their implementation into the finite element code.

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Selected Publications

For all publications, download my curriculum vitae

Journal Articles

  • R.A. Perkins, C.J. Duncan, D. Johnson, T.W. Stone, J.A. Sherburn, M. Chandler, R.D. Moser, B. Paliwal, R.K. Prabhu, Y. Hammi, Assessment of a high strength concrete using experimental and numerical methodologies for high strain rate ballistic impacts, International Journal of Impact Engineering, Volume 178, 2023, 104598
  • Perkins, R.A., Bakhtiarydavijani, A., Ivanoff, A.E., Jones, M., Hammi, Y., Prabhu, R.K., Assessment of brain injury biomechanics in soccer heading using finite element analysis, Brain Multiphysics, Volume 3, 2022, 100052
  • B. Paliwal, Y. Hammi, M. Chandler, R.D. Moser, M.F. Horstemeyer, A three-invariant cap-viscoplastic rate-dependent-damage model for cementitious materials with return mapping integration in Haigh-Westergaard coordinate space, International Journal of Solids and Structures, Volumes 182–183, 2020, Pages 77-99, ISSN 0020-7683
  • H.E. Cho, Y. Hammi, A.L. Bowman, Shun-ichiro Karato, J.R. Baumgardner, M.F. Horstemeyer, (2019), A unified static and dynamic recrystallization Internal State Variable (ISV) constitutive model coupled with grain size evolution for metals and mineral aggregates, International Journal of Plasticity, Vol. 112, Pages 123-157, ISSN 0749-6419
  • Y. Hammi and M.F. Horstemeyer, 2007, “A Physically Motivated Anisotropic Tensorial Representation of Damage with Separate Functions for Void Nucleation, Growth, and Coalescence”, International Journal of Plasticity, Vol. 23, no. 10-11, pp. 1641–1678

Conference Papers/Presentations 

  • Duncan, C, Perkins, RA, Johnson, D, Chandler, M, Moser, R, Sherburn, J, & Hammi, Y. "Comparison of Ballistic Impact Simulations Using Different Constitutive Material Models of Concrete." Proceedings of the ASME 2022 International Mechanical Engineering Congress and Exposition. Volume 3: Advanced Materials: Design, Processing, Characterization and Applications; Advances in Aerospace Technology. Columbus, Ohio, USA. October 30–November 3, 2022. V003T03A037. ASME
  • Paliwal, B., Jordan, M. E., Scott, D., Hammi, Y., Moser, R., & Horstemeyer, M. (2017). Internal State Variable (ISV) Informed Cap-Plasticity Damage Model with Highly Non-linear Hardening for Cementitious Materials,, 2017 International Mechanical Engineering Congress and Exposition (ASME), Tampa, FL, Nov 3-9
  • Hammi, Y., T.W. Stone, P.G. Allison, and M.F. Horstemeyer, 2010, “Fatigue Modeling of a Powder Metallurgy Main Bearing Cap,“ 2010 SIMULIA Customer Conference, Providence, RI: 3DS SIMULIA
  • T.W. Stone, Y. Hammi, R.L. Carino, and M.F.  Horstemeyer, 2009, Modeling for Powder Metallurgy Component Design and Performance Prediction. Advances in Powder Metallurgy & Particulate Materials, Las Vegas, NV: MPIF
  • K. Saanouni, A. Cherouat and Y. Hammi. ‘‘Numerical Aspects of Finite Elastoplasticity with Isotropic Damage for Metal Forming”, Numerical Modeling in Damage Mechanics ‘‘NUMEDAM’00”, October 2000, Troyes, France

Books/Book Chapters 

  • T.R. Fonville, S.J. Scarola, Y. Hammi, Raj K. Prabhu, Mark F. Horstemeyer, Chapter 14 - Resonant frequencies of a human brain, skull, and head, Editor(s): Raj Prabhu, Mark Horstemeyer, Multiscale Biomechanical Modeling of the Brain, Academic Press, 2022, Pages 239-254
  • Youssef Hammi, Tonya Stone, Haley Doude, L. Arias Tucker, P. G. Allison, and Mark F. Horstemeyer, (2018), Chapter 6: Steel Powder Metal Modeling, Integrated Computational Materials Engineering (ICME) for Metals: Concepts and Case Studies, Editor: Mark F. Horstemeyer, 2018 John Wiley & Sons, Inc., pp. 137-198
  • Haley Doude, David Oglesby, Philipp M. Gullett, Haitham El Kadiri, Bohumir Jelinek,Michael I. Baskes, Andrew Oppedal, Youssef Hammi, and Mark F. Horstemeyer, (2018), Chapter 10: Cast Magnesium Alloy Corvette Engine Cradle, Integrated Computational Materials Engineering (ICME) for Metals: Concepts and Case Studies, Editor: Mark F. Horstemeyer, John Wiley & Sons, Inc., pp. 337-376
  • Marco Lugo, Wilburn Whittington, Youssef Hammi, Clémence Bouvard, Bin Li, David K. Francis, Paul T. Wang, and Mark F. Horstemeyer, (2018), Chapter 11: Using an Internal State Variable (ISV)–Multistage Fatigue (MSF) Sequential Analysis for the Design of a Cast AZ91 Magnesium Alloy Front‐End Automotive Component, Integrated Computational Materials Engineering (ICME) for Metals: Concepts and Case Studies, Editor: Mark F. Horstemeyer, John Wiley & Sons, Inc., pp. 377-409
  • Tonya Stone and Youssef Hammi, (2018), Chapter 13: Nickel Powder Metal Modeling Illustrating Atomistic‐Continuum Friction Laws, Integrated Computational Materials Engineering (ICME) for Metals: Concepts and Case Studies, Editor: Mark F. Horstemeyer, John Wiley & Sons, Inc., pp. 447-464

Honors and Awards

  • StatePride Research Award 2011, Mississippi State University
  • Region Champagne-Ardennes Fellowship Research Award, France, 2000
  • Awarded Very Honorable PhD Thesis Dissertation, Troyes, France, 2000