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Hashem M. Mourad
Fluid Dynamics and Solid Mechanics Group (T-3)
Theoretical Division
Los Alamos National Laboratory
Mail Stop B216, Los Alamos, NM 87545
phone: 505·606·2188
e-mail: hmourad@lanl.gov


Research Interests

  • Computational mechanics.
  • Modeling nonlinear behavior, instability, and failure of materials and structures.
  • Modeling microstructural evolution in polycrystals.
  • Finite element methods.
  • Multiscale materials modeling and micromechanics.
  • Computational techniques for the treatment of evolving discontinuities and/or interfaces.
Education

University of Michigan
 Ann Arbor, MI
Ph.D. in Mechanical Engineering
 12·2004
  • Dissertation title: A continuum approach to the modeling of microstructural evolution in polycrystalline solids. Download PDF
The American University in Cairo
 Cairo, Egypt
M.S. in Engineering
 01·2000
  • Thesis title: Elastic-plastic behavior and limit-load analysis of pipe bends under out-of-plane moment loading and internal pressure. Download PDF
B.S. in Engineering
 06·1996
  • Major: Mechanical Engineering (concentration area: Design).
  • Minors: Electronics, Computer Science.
Research Experience

Los Alamos National Laboratory, Theoretical Division
 Los Alamos, NM
Technical Staff Member / Scientist 2
 03·2008 – present
Post-doctoral Research Associate
 05·2006 – 02·2008
  • Current work involves the development of analytical and computational tools to study the dynamic behavior and/or failure of materials and structures under extreme loading conditions, taking into consideration the relevant shock physics, finite-deformation kinematics, and history-dependent mechanisms such as plasticity and damage. Particular focus areas include:
    • Dynamic strain localization and damage evolution in polycrystalline materials subjected to complex thermo-mechanical loads.
    • Modeling the response/failure of laminated composite plates/shells under dynamic loading conditions, including high-velocity impact and/or blast loading. More...
Duke University, Civil & Environmental Engineering Department
 Durham, NC
Post-doctoral Research Associate
 09·2004 – 04·2006
  • Finite element techniques were developed for the treatment of evolving-interface problems, e.g. fluid-structure interaction, phase change, void/crack evolution. Embedded-interface methods were used to eliminate the need for the explicit, conforming meshing of interfaces in such problems. Attention was focused on robust level set algorithms for interface tracking and on stabilized mixed methods for enforcing interfacial constraints using Lagrange multipliers. More...
University of Michigan, Mechanical Engineering Department
 Ann Arbor, MI
Graduate Research Assistant
 01·2001 – 08·2004
  • A continuum formulation was developed to model phenomena in which the coupling between mechanics and composition plays a major role, e.g. void nucleation. This work was also extended to make use of the level set method in modeling phenomena involving moving interfaces, such as grain-boundary migration. The formulation was implemented in a finite element framework using advanced techniques (mixed methods, spatial stabilization, staggering of coupled equations) and was used to treat a range of microstructural evolution phenomena. More...
The American University in Cairo, Engineering Department
 Cairo, Egypt
Graduate Research Assistant
 09·1996 – 12·1999
  • A large-deformation finite element analysis was conducted to study the elastic-plastic behavior and estimate the limit loads of pipe bends under out-of-plane moment loading and internal pressure. Cross-sectional deformation, the distributions of stress and strain at different loading stages, yield progression and the effects of modeling parameters were all studied in detail.
Teaching and Mentoring

University of Michigan, Mechanical Engineering Department
 Ann Arbor, MI
Graduate Student Instructor
 Winter 2004
  • ME-382: Mechanical Behavior of Materials
The American University in Cairo, Engineering Department
 Cairo, Egypt
CAD/FEM Lab. Assistant
 Winter 1996
  • MENG-453: Finite Element Method and Applications in Design
  • MENG-490/MENG-491: Senior Project (thesis) I/II
Industry Experience

StarNet Internet Services
 Cairo, Egypt
Networks & Unix-Systems Administrator
 06·1996 – 01·2000

Professional Systems and Labs
 Giza, Egypt
Technical Support Engineer, CAD/CAM & CNC Systems
 05·1997 – 11·1998

Honors and Awards
  • Mechanical Engineering Departmental Fellowship, University of Michigan, 2000 – 2001.
  • Outstanding Design and Analysis Paper, ASME Pressure Vessels and Piping division, 2000.
  • Cum Laude, The American University in Cairo, 1996.
  • Dean's List, The American University in Cairo, 1991 – 1996.
Professional Affiliations and Service Activities
Publications

Peer-reviewed Journal Articles
  1. H. M. Mourad, T. O. Williams, and F. L. Addessio, "Finite element analysis of inelastic laminated plates using a global–local formulation with delamination," Computer Methods in Applied Mechanics and Engineering, vol. 198, no. 3–4, pp. 542–554, 2008; doi:10.1016/j.cma.2008.09.006. Preprint available
  2. H. M. Mourad, J. Dolbow, and I. Harari, "A bubble-stabilized finite element method for Dirichlet constraints on embedded interfaces," International Journal for Numerical Methods in Engineering, vol. 69, no. 4, pp. 772–793, 2007; doi:10.1002/nme.1788. Preprint available
  3. H. M. Mourad and K. Garikipati, "Advances in the numerical treatment of grain-boundary migration: Coupling with mass transport and mechanics," Computer Methods in Applied Mechanics and Engineering, vol. 196, no. 1–3, pp. 595–607, 2006; doi:10.1016/j.cma.2006.06.005. Preprint available
  4. H. Ji, H. Mourad, E. Fried, and J. Dolbow, "Kinetics of thermally-induced swelling of hydrogels," International Journal of Solids and Structures, vol. 43, no. 7–8, pp. 1878–1907, 2006; doi:10.1016/j.ijsolstr.2005.03.031. Preprint available
  5. H. M. Mourad, J. Dolbow, and K. Garikipati, "An assumed-gradient finite element method for the level set equation," International Journal for Numerical Methods in Engineering, vol. 64, no. 8, pp. 1009–1032, 2005; doi:10.1002/nme.1395. Preprint available
  6. G. Bohrer, H. Mourad, T. Laursen, D. Drewry, R. Avissar, D. Poggi, R. Oren, and G. G. Katul, "Finite-Element Tree Crown Hydrodynamics model (FETCH) using porous media flow within branching elements—a new representation of tree hydrodynamics," Water Resources Research, vol. 41, no. 11, p. W11404, 2005; doi:10.1029/2005WR004181.
  7. H. M. Mourad and M. Y. A. Younan, "Limit-load analysis of pipe bends under out-of-plane moment loading and internal pressure," Journal of Pressure Vessel Technology, Transactions of the ASME, vol. 124, no. 1, pp. 32–37, 2002; doi:10.1115/1.1425807.
  8. H. M. Mourad and M. Y. A. Younan, "Nonlinear analysis of pipe bends subjected to out-of-plane moment loading and internal pressure," Journal of Pressure Vessel Technology, Transactions of the ASME, vol. 123, no. 2, pp. 253–258, 2001; doi:10.1115/1.1310335.
  9. H. M. Mourad and M. Y. A. Younan, "The effect of modeling parameters on the predicted limit loads for pipe bends subjected to out-of-plane moment loading and internal pressure," Journal of Pressure Vessel Technology, Transactions of the ASME, vol. 122, no. 4, pp. 450–456, 2000; doi:10.1115/1.1310334.
Book Chapters
  1. H. M. Mourad, T. O. Williams, and F. L. Addessio, "A computational framework for multiscale analysis of laminated composite plates," in Advances in Mathematical Modeling and Experimental Methods for Materials and Structures, R. Gilat and L. Banks-Sills, Eds. New York: Springer, 2010, pp. 131–144; doi:10.1007/978-90-481-3467-0_10.
Conference Papers
  1. H. M. Mourad and K. Garikipati, "Modeling of coupled self-diffusion and mechanics in polycrystalline solids," in Proceedings of the Sixth World Congress on Computational Mechanics [CDROM], Beijing, China, September 5–10, 2004.
Conference Abstracts
  1. H. Mourad, T. Williams, and F. Addessio, "Finite element analysis of inelastic laminated plates using a global–local formulation with delamination," in Proceedings of the 45th Annual Technical Meeting of the Society of Engineering Science [CDROM], Champaign, Illinois, October 12–15, 2008.
  2. H. M. Mourad, T. O. Williams, and F. L. Addessio, "A global–local strategy for modeling the transient response of laminated composite plates," in Proceedings of the 44th Annual Technical Meeting of the Society of Engineering Science [CDROM], College Station, Texas, October 21–24, 2007.
  3. H. M. Mourad, J. Dolbow, and I. Harari, "A bubble-stabilized finite element method for imposing Dirichlet constraints on embedded interfaces," in Proceedings of the Seventh World Congress on Computational Mechanics [CDROM], Los Angeles, California, July 16–22, 2006.
  4. H. M. Mourad, J. Dolbow, and K. Garikipati, "A simple numerical solution scheme for the level set equation," in Proceedings of the Eighth U.S. National Congress on Computational Mechanics [CDROM], Austin, Texas, July 24–28, 2005.
  5. H. Mourad and K. Garikipati, "Modeling void nucleation in polycrystalline solids: The effect of compositional stress," in Proceedings of the 40th Annual Technical Meeting of the Society of Engineering Science [CDROM], Ann Arbor, Michigan, October 12–15, 2003.
  6. K. Garikipati and H. Mourad, "The influence of compositional stress on self-diffusion and voiding in crystalline thin films: A theoretical treatment," in Abstracts of the 2002 MRS Fall Meeting, p. 513, Boston, Massachusetts, December 2–6, 2002.
Technical Reports and Special Publications
  1. H. M. Mourad, T. O. Williams, and F. L. Addessio, "Global–local analysis of laminated composite plates," in ADTSC Science Highlights 2008, Los Alamos National Laboratory, LA-UR-08-1690, pp. 168–169, 2008.