Dr. Lotfi specializes in structural assessment, structural rehabilitation, failure investigation, seismic evaluation, and nonlinear finite element simulation of structures. He has applied his expertise to evaluation, retrofit design, and failure investigation of of concrete, steel, and masonry structures including buildings, bridges, parking structures, industrial structures, environmental structures, pipelines, and foundations.
Dr. Lotfi has developed several analytical models for failure analysis of concrete and masonry structures and has implemented them in a nonlinear finite element analysis program. He has conducted extensive static and dynamic finite element analysis of concrete, steel, and masonry structures that involve extreme geometrical and material nonlinearities, instability, impact, and collapse. He is experienced in nonlinear transient heat transfer finite element analysis of structures. He has developed special-purpose computer programs that, by linking to commercial finite element software, make everyday analysis and design of complex structures feasible and easy for the design professionals.
Ph.D. in Civil Engineering, University of Colorado at Boulder, 1992
M.S. in Civil Engineering, University of Tehran, Iran, 1986
- American Concrete Institute
- American Institute of Steel Construction
- American Society of Civil Engineers
Roller, J. J., and Lotfi, H. R, “Proposed Simplified Changes to ANSI/AWWA C304 Standard for Design of Prestressed Concrete Cylinder Pipe”, Proc. of the ASCE Pipeline Conference, Baltimore, MD, 2015.
Lotfi, H.R., Oesterle, R. G., and Roller, J., “Reliability Assessment of Distressed Concrete Cylinder Pipe”, Proc. of the ASCE Pipeline Division Specialty Conference, Houston, TX, pp. 838-852, 2005.
Lotfi, H. R. and Oesterle, R. G., “Analysis and Design of Slab Track Laboratory Specimens”, PCA R&D Serial No. 2795a, Portland Cement Association, Skokie, IL, 2007.