Mojtaba Atash Bahar

Graduate Student CIVE-PhD Lincoln Geotechnical and Materials Engineering-Advisor: Tewodros Yosef University of Nebraska-Lincoln

Education

Academic Degrees

Ph.D. Researcher Geotechnical and Materials Engineering, University of Nebraska-Lincoln, 2024-Present
MS. Geotechnical Engineering, University of Guilan, 2011-2013
B.Sc. Eng., Civil Engineering, Azad University, 2002-2006

Area of Research and Professional Interest

Computational geomechanics and numerical simulation of soil–structure systems
Mechanics and behavior of compacted granular soils with applications in transportation and roadside safety systems
Behavior and Mechanical Characterization of Rockfill Materials

Publications and Presentations

Journal Papers-In Print:

Yosef, T. Y., Fang, C., Kim, S., Faller, R. K., Alomari, Q. A., Atash Bahar, M& Kumar, G. S. “Large Deformation Pile-soil Interaction Under LateralVehicle Impact Using Hybrid SPH+FEM and EFG+FEM Models”. International Journal for Numerical and Analytical Methods in Geomechanics, 2026.
Yosef, T. Y., Fang, C., Faller, R. K., Kim, S., Alomari, Q. A., Atash Bahar, M., & Kumar, G. S. “A Review of Soil Constitutive Models for Simulating Dynamic Soil–Structure Interaction Processes Under Impact Loading”. Geotechnics, 5(2), 40, 2025.
Yosef, T. Y., Faller, R. K., Alomari, Q. A., Schmidt, J. D., & Atash Bahar, M. “Performance Evaluation of a Sustainable Glulam Timber Rubrail and Noise Wall System Under MASH TL-3 Crash Conditions”. Infrastructures, 10(9), 226, 2025.
Atash Bahar, Mojtaba., Lasht e Neshaei, Mir Ahmad., Jamshidi Chenari, Reza. “Evaluation of the Behavior of Rockfill Material Using Large-scale Triaxial Tests.” 2nd International Conference on Geotechnical & Urban Earthquake Engineering, Tabriz, Iran, 2015.

Journal Papers-Under Review/In Preparation:

Atash Bahar, M., Yosef, T. Y., Faller, R. K. & Alomari, Q. A. “Crash testing and evaluation of a MASH TL-2 steel bridge rail attached to precast box girders”,2026. (In Preparation)
Atash Bahar, M., Yosef, T. Y., Faller, R. K & Bielenberg, R. W. “Evaluation of Grade-Separated Median Barriers under Dynamic Vehicle Impact and Applied Static Loads”, 2026. (In Preparation)

Technical Reports/Books:

Atash Bahar, M., Stolle, C., Faller, R. K., Lechtenberg, K, A., Steelman, J., Holloway, J. C., Urbank, E. L. and Wills, J. B. “Hawaii DOT Modified Type A-1 Flared Buried-In-Backslope Guardrail End Terminal Reverse Direction”. Midwest Roadside Safety Facility, Report Number: TRP-03-425-25, University of Nebraska-Lincoln, 2025.
Faller, R. K., Yosef, T. Y., Hu, J., Rosenbaugh, S.K., Bielenberg, R.W., Loken, A.E., Steelman, J.S., Atash Bahar, M., Azizinamini, A., Khodayari A., Ramezani, M., & Arvan, A.P. “Full-Scale Crash Testing and Evaluation of a Mash TL-4 Prefabricated Concrete Bridge Railing Barrier Concept No. (UHPC-1a)”. NCHRP 22-56, Draft Report. Midwest Roadside Safety Facility, University of Nebraska-Lincoln collaborated with Florida International University, 2025.
Atash Bahar, M., Yosef, T. Y., Faller, R. K. & Bielenberg, R. W., Pool fund Project, “Development, Evaluation, and Crash Testing of High-Performance Grade-Separated Concrete Median Barrier – Phase I”. Nebraska Department of Transportation, Midwest Pooled Fund Program, Draft Report. Midwest Roadside Safety Facility, Report Number: TRP-03-507-25, University of Nebraska-Lincoln, 2026.

Teaching Experience

Lecturer, University of Applied Sciences and Technology, Rasht, Iran, 2017-2022
Taught Civil Engineering including Foundation Engineering, Soil Mechanics, Construction Management, Soil Mechanics Laboratory

Honors and Awards

Best Instructor Award, Department of Civil Engineering, University of Applied Sciences and Technology, Rasht, Guilan, Iran. Fall 2020

Certificates

Occupational Safety and Health Administration (OSHA), 10-Hour, 2023.
Certificate of attendance “Safety Training on fatigue among construction workers”, OSHA, 2023.
Certificate of attendance “Respiratory Protection in Construction: Awareness, Prevention, and Reduction of Silica Dust Exposure”, OSHA, 2025.

Seminar

· 42nd Annual Geotechnical Seminar GEO-Omaha 2025

Professional Experience

Professional Memberships

International Society for Soil Mechanic and geotechnical engineering (ISSMGE)
ASCE American Society of Civil Engineers
Deep Foundations Institute (DFI)
Earthquake Engineering Research Institute (EERI)
Precast/Prestressed Concrete Institute (PCI)
Construction Engineering Organization, Engineering Board of Iran (Professional Engineer)

Professional Profiles and Research Platforms

Contact Information:

City Campus (Lincoln)

WHIT 330N