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Aerospace and Mechanical Engineering
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Ellad B. Tadmor
Professor

Ellad Tadmor

Contact information
Office: 122 Akerman Hall
Phone: 612-625-6642
E-mail: tadmor (at) umn.edu

See a research Q&A
List of research topics
Current research projects

Professor Tadmor's research focuses on understanding material response from fundamental principles rather than phenomenology. Dr. Tadmor studies microscopic processes that lead to macroscopic phenomena such as fracture and plasticity using atomic-scale modeling and multiple-scale techniques. Dr. Tadmor is also interested, on a more basic level, in the connection between continuum theory and atomistic models. Some recent specific topics include:

  • Continued development and extension of the Quasicontinuum (QC) Method. QC is a multiscale method that makes it possible to simulate large-scale problems using a continuum model while including atomistic resolution where necessary, for example near a crack tip, where atomic-scale processes are important. QC was developed by Tadmor during his Ph.D. work and is currently one of the leading multiscale methods in use in the world. For more information on the QC method, please visit the QC website at http://www.qcmethod.org.
  • Understanding the microscopic foundations of continuum mechanics. Recent work includes the derivation of expressions for stress and heat flux in atomistic systems based on statistical mechanics. The new derivation provides a unified framework in which all existing definitions for continuum quantities are obtained as limiting cases. This helps to clarify the meaning of these definitions and their range of applicability.
  • Development of the "Knowledgebase of Interatomic Models" (KIM) -- an online infrastructure for assessing the transferability of interatomic potentials. "This project aims to answer the question: When and to what extent can we believe the results of atomistic simulations of materials?"
    For more information, see https://openkim.org/
  • Development of multiscale methods for simultaneously spanning both length and time scales. Current multiscale methods either span over multiple lengthscales (as QC) or accelerate time, but not both. Efforts are currently underway to develop hybrid methods that do both. This will enable predictive studies of complex phenomena such as friction and corrosion cracking.
  • Development of multiscale methods for "objective structures". Objective structures, recently proposed by R. D. James, are "molecular structures composed of identical molecules such that corresponding molecules "see" the same environment up to orthogonal transformation." The introduction of objective structures constitutes a breakthrough in solid state physics. Many structures that are not crystalline (like proteins, viruses and nanotubes) are objective structures. The development of multiscale methods for these structures will enable their simulation under realistic conditions involving complex deformation and the presence of defects.

Degrees

B.Sc., Mechanical Engineering, Technion, Israel, 1987
M.Sc., Mechanical Engineering, Technion, Israel, 1991
Ph.D., Solid Mechanics, Brown University, USA, 1996

Experience

2006 - current: Professor, Aerospace Engineering & Mechanics, University of Minnesota
2005 - 2006: Associate Professor, Faculty of Mechanical Engineering, Technion
1999 - 2004: Senior Lecturer, Faculty of Mechanical Engineering, Technion
1998 - 1999: Lecturer, Faculty of Mechanical Engineering, Technion
1996 - 1998: Postdoctoral Research Associate, Division of Engineering and Applied Science, Harvard University
1996: Adjunct Professor and Research Associate, Division of Engineering, Brown University
1989 - 1991: Research Engineer, Structural Analysis Group, Weapon Systems Division, RAFAEL - Israel Armament Development Authority

Books

Professor Tadmor has recently completed two graduate level textbooks in collaboration with his colleagues Prof. Ronald Miller (Carleton University) and Prof. Ryan Elliott (University of Minnesota):
  • Ellad B. Tadmor and Ronald E. Miller, Modeling Materials: Continuum, Atomistic and Multiscale Techniques, Cambridge University Press, 2011.
  • Ellad B. Tadmor, Ronald E. Miller and Ryan S. Elliott, Continuum Mechanics and Thermodynamics: From Fundamental Concepts to Governing Equations, Cambridge University Press, 2011.
More information on the books can be found at http://www.modelingmaterials.org/

Five Recent Publications

  • W. K. Kin and E. B. Tadmor, 2012, An Analytical Self-consistent Solution for the Free Energy of a 1-D Chain of Atoms Including Anharmonic Effects, J Stat Phys, 148:951971, (Journal Article) More Details, Request PDF
  • Y. Hakobyan, E. B. Tadmor, and R. D. James , 2012, Objective quasicontinuum approach for rod problems, PHYSICAL REVIEW B, 86, 245435, (Journal Article) More Details, Request PDF
  • N. C. Admal and E. B. Tadmor, 2011, Stress and heat flux for arbitrary multi-body potentials: A unified framework, J. Chem. Phys., 134, 184106, (Journal Article) More Details, Request PDF
  • E. B. Tadmor, R. S. Elliott, J. P. Sethna, R. E. Miller and C. A. Becker, 2011, The Potential of Atomistic Simulations and the Knowledgebase of Interatomic Models (KIM), JOM, 63, 17, (Journal Article) More Details, Request PDF
  • B. Bar On, E. Altus and E. B. Tadmor,, 2010, Surface Effects in Non-Uniform Nanobeams: Continuum vs. Atomistic Modeling, Int. J. Solids Struc., vol 47, 1243-1252, (Journal Article) More Details, Request PDF

See more publications

Honors and Fellowships

Technion Award for Excellence in Teaching, 2000 - 2001
Salomon Simon Mani Award for Excellence in Teaching, 2001
Technion Award for Excellence in Teaching, 1998 - 1999
ATS Women's Division - Jacob Ullmann Academic Lectureship, 1998 - 2000
NSF Fellowship to attend CECAM workshops in France, 1997
MRS Graduate Student Award, 1995
Background
RAFAEL Professional Excellence Award, 1990

Scientific and Professional Societies

Materials Research Society
Israel Society for Theoretical and Applied Mechanics
United States Association of Computational Mechanics

Editorial Positions

Associate Editor of the Journal of Elasticity
Director of the Knowledgebase of Interatomic Models (KIM) project (https://openkim.org)

Subjects and Courses Taught

Undergraduate
AEM 2011 -- Statics
AEM 3031 -- Deformable Body Mechanics
AEM 4502 -- Computational Structural Analysis
Graduate
AEM 5501 -- Continuum Mechanics
AEM 8531 -- Fracture Mechanics
AEM 8551 -- Multiscale Methods for Bridging Length and Time Scales
AEM 8595 -- Selected Topics in Mechanics and Materials
Curriculum Vitae Brief Biographical Sketch

Last Modified: 2013-12-10 at 15:07:48 -- this is in International Standard Date and Time Notation