Professor Mehrdad Negahban, Mechanical & Materials Engineering University of Nebraska-Lincoln, USA

Molecular dynamics to continuum modeling: Some tools for bridging the gap
When Jun 05, 2014
from 02:00 PM to 03:00 PM
Where LR8, IEB Building, Engineering Science
Contact Name
Contact Phone 01865-283302
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We have been studying the relation between molecular dynamic (MD) simulations and continuum models for polymer systems. This was motivated by the affine and non-affine motion of molecules in most polymer systems and trying to find its relation to internal variable modeling at the continuum level.

 This effort has resulted in the development of new measures of deformation and stress. Some of these measures are based on minimizing the difference between the concepts of deformation and traction on a continuum level and their counterparts in the MD simulations. These new measures are fairly general and may have applications in other studies of the relation between MD and macroscopic response.

 Mehrdad Negahban is a Professor of Mechanical & Materials Engineering at the University of Nebraska-Lincoln specializing in the characterization and modeling of large deformation thermodynamic response of materials and their numerical simulation. He graduated with a B.S. in Mechanical Engineering from Iowa State University of Science and Technology, and an M.S. and Ph.D. in Applied Mechanics from the University of Michigan. His research has focused on continuum mechanics and thermodynamics of solids, constitutive theory, characterization and modeling of glassy polymers and crystallizing polymers, finite deformation plasticity, numerical simulation at large deformations, finite elements for generalized shells, dynamic loading of materials and stereo-optical measurements of strains. His work combines theoretical, experimental, and computational methods. A new applied area of work is in 3D printing and the possibility of printing material properties on a molecular scale.  (

 New Book: The Mechanical and Thermodynamical Theory of Plasticity, Mehrdad Negahban, 2012, CRC Press, Taylor & Francis Group