Skip Navigation

Blast Simulation



Jonathan Hein  Jonathan received his undergraduate degree in Mechanical Engineering from the University of Nebraska-Lincoln in August 2009. As an undergraduate he participated in study abroad programs to Brazil (2007) and Sweden as a student intern (2008). He worked as a research assistant under Dr. Mehrdad Negahban performing experiments to develop a thermodynamically consistent viscoelastic model for polycarbonate. He was part of UNL’s second NASA microgravity team in 2009 and is now pursuing his Masters in Engineering Mechanics. He is working on several projects including ultrasonic characterization of soft materials and tissues and high speed stereo-optical deformation analysis for shock tube experiments.


Trauma Mechanics Work


  • M.S. (Engineering Mechanics) University of Nebraska–Lincoln, Lincoln, NE; Since 2009 (current student)
  • B.E. (Mechanical Engineering) University of Nebraska–Lincoln, Lincoln, NE; 2009


  • 2009 Graduate Research Assistant: Dept of Engineering Mechanics, UNL (current). Has made various contributions to the Trauma Mechanics Research Initiative including the following: developed of a system to simultaneously perform compression and ultrasonic tests on soft material, performed experiments using ARAMIS (stereo-optical system to measure surface strains) in UNL’s shock tube facility, facilitated the acquisition of pig brain tissue to perform DMA, ultrasonic and Kolsky Bar compression tests on to determine the dynamic response of brain tissue so a proper brain stimulant could be selected to perform experiments on.
  • 2009 Team Flyer, Researcher: NASA Microgravity - Systems Engineering, UNL and Houston, TX. Designed and developed an experiment to determine the flow of lunar soil through a hopper in lunar gravity. Spent 10 days at Johnson Space Center in Houston working on an testing the experiment. Ran flow experiments in simulated Lunar Gravity aboard Zero G’s modified Boeing 727 aircraft
  • 2008 Research Assistant: Dept of Engineering Mechanics, UNL. Contributed to three projects: Characterization of Polycarbonate, Mechanical Effects of Osteoporosis, and Traumatic Brain Injury.
  • 2008 Research Assistant: Dept of Civil Engineering, UNL. Performed experiments on asphalt containing different aggregate size and shape using ARAMIS cameras and software. Analyzed experimental results to calculate the surface strains on the asphalt samples to better understand the conditions that cause material failure.
  • 2008 Research Assistant: Luleå Tekniska Universitet, Luleå, Sweden. Performed experiments on natural fiber composites to characterize the material properties. Analyzed the experimental data to determine the elastic modulus, stiffness degradation response, thermal response and visco-elastic and visco-plastic properties. Worked with professors and graduate students to perform experiments and data analysis. Attended the ECCM (European Conference on Composite Materials in Stockholm, Sweden).
  • 2007 Research Assistant: Hamilton Sundstrand, York, NE. Performed data entry and interpretation with the aid of the quality engineering team. Worked with machine operators to understand Process Certification and machining techniques. Performed Gage R&Rs for new Key Product Characteristics.

Publications & Presentations (contributing author)

  • 2010 Material Characterization and Modeling of Head for Dynamic Simulations.
  • 2010 Material Modeling and Development of a Realistic Dummy Head for Testing Blast Induced Traumatic Brain Injury.
  • 2010 Shock Tube Blast Test Modeling and Validation.


  • 2009 Nebraska Space Grand Consortium Grant
  • 2008 National Science Foundation IRES Grant
  • 2007 Hamilton Sundstrand Quality Clinic Award
  • 2006 Annual Certificate of High Scholarship