Faculty - Negahban

Mehrdad Negaban, Professor & Graduate Chair


Mehrdad Negaban

Mehrdad Negaban
Professor & Graduate Chair

Mechanical & Materials Engineering
University of Nebraska–Lincoln
W311 Nebraska Hall
Lincoln, Nebraska 68588-0526
Office: 402-472-2397

Research Interests

  • Theoretical, computational, and experimental studies to characterize large deformation thermo-mechanical response of materials, in particular polymers.
  • Simulation of the effects of crystallization on the mechanical behavior of polymers under large deformations.
  • The study of the effects of crystallization on failure and the redistribution of stress in polymer matrix composites. Simulation of the manufacturing of thin film extruded polymers.
  • Experimental investigation and theoretical modeling of large plastic forming and shape recovery in amorphous polymers.
  • Nonlinear Mechanics of Materials and Material Simulation: General interest in theoretical and computational analysis and simulations, and in the experimental characterization of the thermodynamics of solids, with specific interests in constitutive modeling, nonlinear and time dependent characterstics, finite deformations, phase transformations, and in development of object oriented finite element methods. Most of this work is focused on modeling and characterization of the response of glassy and semi-crystalline polymers, with a developing interest in modeling and characterization of failure and fracture with aging, and with developing work on biological materials.

Publications

Articles
  • J. Vogeler, R. Feng, A. Goel, M. Negahban, "Using a torsional Kolsky bar to characterizing the normal stress induced by rapid shear in glassy Polycarbonate," (in preparation).
  • A. Goel, M. Negahban,"Modeling of the anisotropic nonlinear thermoelastic response of Polycarbonate resulting from plastic flow," (in preparation).
  • A. Goel, M. Negahban, L. Zhang, "Modeling nonlinear thermo-elastic response for glassy polycar-bonate using ultrasonic results under compression in a confined cell," Mechanics of Materials, vol. 43, 2011, pages 119-126.
  • A. Goel, Y. Wen, J. Hein, M. Negahban, J. A. Turner, "Measuring the inuence of temperature on the development of the elastic anisotropy with compressive plastic ow for glassy polycarbonate," Journal of Engineering Materials and Technology, vol. 133, 2011, pages 030902-1 to 7.
  • A. Goel, A. Sherafati, M. Negahban, A. Azizinamini, Y. Wang, "A finite deformation nonlinear thermo-elastic model that mimics plasticity during monotonic loading," International Journal of Solids and Structures, vol. 48, 2011, pages 2977-2986.
  • L. Zhang, M. Negahban, "Propagation of infinitesimal thermo-mechanical waves during the finite-deformation loading of a viscoelastic material: General theory," Zeitschrift fur angewandte Mathematik und Physik (ZAMP), 2012 (DOI:10.1007/s00033-012-0200-5).
  • G. Gao, Z. Li , M. Negahban, "Dynamic fracture analysis of aged glassy polycarbonate by the method of caustics," Acta Mechanica Solida Sinica, 2012 (accepted).
  • J.F. Cepeda, C.L. Weller, H. Thippareddi, M. Negahban, J. Subbia, "Modeling Cooling of Ready-to-Eat Meats by 3D Finite Element Analysis: Validation in Meat Processing Facilities,"Journal of Food Engineering, 2012 (DOI: http://dx.doi.org/10.1016/j.jfoodeng.2012.11.024).
Books
  • M. Negahban, "The Mechanical and Thermodynamical Theory of Plasticity," CRC Press, Taylor & Francis, Boca Raton, 2012.

Graduates

  • Pierre Delabarre (with Jean-Marc Saiter), Master M2, Materials Engineering (CEMPI), “The characterization of polycarbonate by DMA and other mechanical testing,” University of Rouen, Rouen, France, September, 2004.
  • Kyle Wayne Strabala, “The Effects of Combined Compression and Aging on the Properties of Glassy Polycarbonate,” MS, Engineering Mechanics, University of Nebraska–Lincoln, August, 2009.
  • Kyle Wayne Strabala, “The Effects of Combined Compression and Aging on the Properties of Glassy Polycarbonate,” MS, Materials Engineering, University of Rouen, Rouen, France, August, 2009.
  • Cline Hayot, “Viscoelastic properties of the cell walls of Arabidopsis thaliana using nanoindentation,” MS, Engineering Mechanics, University of Nebraska–Lincoln, August, 2009.
  • Cline Hayot, “Viscoelastic properties of the cell walls of Arabidopsis thaliana using nanoindentation,” MS, Materials Engineering, University of Rouen, Rouen, France, August, 2009.
  • Ruojuan Ma, Ph.D., now with Visteon. Thesis: “A study of the influence of uniform crystallization on the mechanical response of polymers and polymer-matrix composites”
  • Juliet Dauphin, “Crystallization studies in PET” - University of Rouen, Rouen, France.
  • Philippe Dos Santos Claro, “Crystallization in PET during ransient thermal loading” - University of Rouen, Rouen, France.