Mehrdad Negahban

Mehrdad Negahban

Professor - U.S. Director of Advanced Mechanics and Materials Engineering International Laboratory (AMME-International)
Academic Degrees
  • Ph.D. (1988): University of Michigan, Applied Mechanics, Ann Arbor, Michigan
  • M.S.E. (1984): University of Michigan, Applied Mechanics, Ann Arbor, Michigan
  • B.S. (1982): Iowa State University of Science and Technology, Mechanical Engineering, Ames, Iowa
Areas of Research and Professional Interest
  • 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.
  • 3D printing with stereo lithography: Controlling property variation and optimizing property distribution.

Courses Taught


Experience

Recent Graduates:

  • Zhong  Chen, Ph.D., "Optimal Grading for Strength and Functionality of Parts Made of  Interpenetrating Polymer Networks: Load Capacity Enhancement," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 2016.

  • Evan Schwahn,  M.S., "Using Controlled Curing in a Custom Stereolithography-based 3D Printing  Machine to Obtain Graded Property Variations," University of Nebraska-Lincoln, Lincoln, Nebraska, August, 2015.

  • Lili Zhang, Ph.D., "Propogation of thermo-mechanical waves in deforming nonlinear viscoelastic bodies," University of Nebraska-Lincoln, Lincoln, Nebraska, August, 2013.
  • Lena Butterfield (with Li Tan), M.S., "Developing and characterizing a rapid prototyping stereo-lithography machine to produce interpenetrating polymer network systems," University of Nebraska-Lincoln, Lincoln, Nebraska, August, 2013.
  • Emilie Bobo, M.S., "Development of a controllable polymer system using interpenetrating networks," University of Nebraska-Lincoln, Lincoln, Nebraska, August, 2013.
  • Jonathan M. Hein, M.S., "Ultrasonic and stereo-optical characterization techniques for applications in mechanical testing," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 2011.
  • Ke Yu, M.S., "Generic strategies to implement material grading in finite element methods for isotropic and anisotropic materials," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 2011.
  • Charles Landais, M.S., "Ultrasonic methods for the characterization of complex materials and material systems: Polymers, structured polymers, soft tissue and bone," University of Nebraska-Lincoln, Lincoln, Nebraska, May, 2011.
  • Shawn E. Meagher, M.S., "Anomalous loss of toughness of work toughened polycarbonate," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 201o.
  • Quentin Fichot, "Characterization, modeling, and consequences of the development during plastic flow of large anisotropy in the wave speeds," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 201o.
  • Ashwani Kumar Goel, Ph.D., "Large deformation thermodynamically consistent constitutive model for glassy polymers," University of Nebraska-Lincoln, Lincoln, Nebraska, December, 2009.

Selected Publications

2018
  1. Z Chen*, W Li*, M Negahban, J-M Saiter, N Delpouve, L Tan, and Z Li, "Approaching the upper bound of load capacity: Functional grading with interpenetrating polymer networks," Journal of Materials and Design, 137, 152-163 (2018). DOI:0.1016/j.matdes.2017.10.019
2017
  1. Y Liu, J Yi, Z Li, X Su, W Li*, and M Negahban, "Dissipative elastic metamaterial with a low-frequency passband," AIP Advances, 7, 6, 65215 (2017). DOI:10.1063/1.4991034
  2. L Zhang*, Z Zhang*, J Jasa*, D Li, RO Cleveland, M Negahban, and A Jérusalem, "Molecular dynamics simulations of heterogeneous cell membranes in response to uniaxial membrane stretches at high loading rates," Scientific Reports, 7, 8316 (2017). DOI:10.1038/s41598-017-06827-3
  3. Z Chen*, and M Negahban, "Functional grading of IPN parts: Plates with single and multiple cracks," Acta Mechanica (2017). DOI:10.1007/s00707-017-1911-7
  4. Z Zhang*, L Zhang*, J Jasa*, W Li*, G Gazonas, and M Negahban, "High fidelity computational characterization of the mechanical response of thermally aged polycarbonate," Modelling and Simulation in Materials Science and Engineering, 25, 26 pages (2017). DOI:10.1088/1361-651X/aa7341
  5. M Negahban, L Zhang*, Z Zhang*, J Jasa*, and A Jérusalem, "Software for Extracting Deformation Gradient and Stress from MD Simulations: Simulations using the CHARMM Force Field," (2017).
  6. M Negahban, "Negahban Group Report: Saw-tooth shear response of aged poly(methyl methacrylate) (PMMA)," (2017).
  7. W Li*, G Gazonas, EN Brown, PJ Rao, and M Negahban, "Back Stress in Modeling the Response of PEEK and PC," In Challenges in Mechanics of Time Dependent Materials, Edited by: B Antoun, A Arzoumanidis, HJ Qi, M Silberstein, A Amirkhizi, J Furmanski, and H Lu, 2, 181-186 (2017). DOI:10.1007/978-3-319-41543-7_23
2016
  1. W Li*, M Bakhtiary-Noodeh*, N Delpouve, J-M Saiter, L Tan, and M Negahban, "Printing Continuously Graded Interpenetrating Polymer Networks of Acrylate/Epoxy by Manipulating Cationic Network Formation during Stereolithography," eXPRESS Polymer Letters, 10, 12, 1003-1015 (2016). DOI:10.3144/expresspolymlett.2016.93
  2. W Li*, F Bateux*, S Araujo*, N Delpouve, J-M Saiter, and M Negahban, "Measurement of Beer-Lambert Attenuation Coefficient and Curing Kinetics Power Order: A Method Based on Rapid-Scan FTIR During Laser Curing on an ATR," Macromolecular Symposia, 365, 173-179 (2016). DOI:10.1002/masy.201650022
  3. L Buterfield*, E Bobo*, W Li*, S Henning, N Delpouve, L Tan, J-M Saiter, and M Negahban, "Morphology and Thermomechanical Properties in Epoxy Acrylate Interpenetrated Networks," Macromolecular Symposia, 365, 59-66 (2016). DOI:10.1002/masy.201650012
  4. J Chen, K Pitchai, S Birla, D Jones, M Negahban, and J Subbia, "Modeling heat and mass transport during microwave heating of frozen food rotating on a turntable," Food and Bioproducts Processing, 99, 116-127 (2016). DOI:10.1016/j.fbp.2016.04.009
  5. BM Humphrey, RW Bielengerg, RK Faller, JD Reid, and M Negahban, "Improved Methodologies in Modeling and Predicting Failure in AASHTO M-180 Guardrail Steel Using Finite Element Analysis - Phase I," University of Nebraska-Lincoln Digital Commons, 452 pages (2016).
  6. W Li*, EN Brown, PJ Rao, G Gazonas, and M Negahban, "Mechanical Characterization and Preliminary Modeling of PEEK," Mechanics of Composite and Multi-functional Materials, 7, 209-218 (2016). DOI:10.1007/978-3-319-21762-8_25
  7. L Tan, and M Negahban, "Preface to Special Issue: POLYCHAR 23 - World Forum on Advanced Materials," Macromolecular Symposia, 365, 2 pages (2016). DOI:10.1002/masy.201670027
  8. L Tan, and M Negahban, "Special Issue: POLYCHAR 23 - World Forum on Advanced Materials," Macromolecular Symposia, 365, 267 pages (2016). DOI:DOI: 10.1002/masy.201670024
2015
  1. Z Chen*, and M Negahban, "Avoiding Negative Elastic Moduli when using Lagrange Interpolation for Material Grading in Finite Element Analysis," Acta Mechanica, 227, 693-706 (2015). DOI:10.1007/s00707-015-1476-2
  2. L Zhang*, J Jasa*, G Gazonas, A Jérusalem, and M Negahban, "Extracting continuum-like deformation and stress from molecular dynamics simulations," Computer Methods in Applied Mechanics and Engineering, 283, 1010-1031 (2015). DOI:10.1016/j.cma.2014.10.018
  3. W Li*, EN Brown, PJ Rao, G Gazonas, and M Negahban, "Mechanical Characterization and Preliminary Modeling of PEEK," Experimental Mechanics Annual 2015, Costa Mesa, California, USA, 6/8-11 2015 (2015).

Full list at: Negahban Group

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