Jeffrey P. Chrstos, Ph.D.

Principal Research Engineer

B.Sc., Mechanical Engineering, Drexel University, Philadelphia, Pennsylvania, 1984.

M.Sc., Mechanical Engineering, The Ohio State University, Columbus, Ohio, 1992.

Ph.D., Mechanical Engineering, The Ohio State University, Columbus, Ohio, 2000.

Dr. Chrstos works for STI on projects that deal with vehicle dynamics modeling and real-time simulation.  He assists with the development and support of both the VDANL dynamics software package and the STISIM Drive real-time driving simulator.  Dr. Chrstos is also head of JPC Engineering, where he specializes in road vehicle handling dynamics: simulation, data analysis, test program development, and parameter measurements.

His vehicle simulation projects includes both real-time and analysis simulations running on PC hardware. Driver-in-the-loop simulator development projects include vehicle dynamics simulation, driving scenario programming, network communication, steering force-feel system, and 3D graphics programming.  He has experience with passenger cars, heavy trucks, and racing cars, and is currently working with Ford Motor Company on racecar dynamics.

Selected Bibliography

B. P. Danowsky, J. P. Chrstos, Ph.D., D. H. Klyde, C. Farhat, Ph.D., and M. J. Brenner, “Evaluation of Aeroelastic Uncertainty Analysis Methods,” Journal of Aircraft, vol. 47, no. 4, pp. 1266-1273, 2010. (AIAA 2008-6371, STI-P-712J)

J. G. Howe, J. P. Chrstos, Ph.D., R. Romano, and J. O’Kins, “Development of a Vehicle Model/Simulation Evaluation Tool,” presented at SAE 2008 World Congress, Detroit, Michigan, USA, April 14-17, 2008. (SAE 2008-01-0778, STI-P-700)

J. G. Howe, D. Lee, Ph.D., J. P. Chrstos, Ph.D., O. Balling, Ph.D., T. T. Myers, R. W. Allen, D. J. Gorsich, and A. Reid, “Further Analysis of Potential Road/Terrain Characterization Rating Metrics,” presented at SAE Commercial Vehicle Engineering Congress and Exhibition, Chicago, IL, November 2, 2005. (SAE 2005-01-3562, STI-P-664)

C.-Y. Liang, Ph.D., R. W. Allen, T. J. Rosenthal, J. P. Chrstos, Ph.D., and P. Nunez, “Tire Modeling for Off-Road Vehicle Simulation,” presented at SAE Automotive Dynamics Stability & Control Conference and Exhibition (ADSC), Detroit, MI, May 5-6, 2004. (SAE 2004-01-2058, STI-P-631)

J. G. Howe, D. Lee, Ph.D., J. P. Chrstos, Ph.D., T. T. Myers, R. W. Allen, D. J. Gorsich, and A. Reid, “Analysis of Potential Road/Terrain Characterization Rating Metrics,” SAE Transactions: Journal of Commercial Vehicles, vol. 113, no. 2, 2004. (SAE 2004-01-2640, STI-P-628)

J. G. Howe, J. P. Chrstos, Ph.D., R. W. Allen, T. T. Myers, D. Lee, Ph.D., C.-Y. Liang, Ph.D., D. J. Gorsich, and A. Reid, “Quarter car model stress analysis for terrain/road profile ratings,” International Journal of Vehicle Design (IJVD), vol. 36, no. 2/3, pp. 248-269, 2004. (STI-P-643)

T. J. Rosenthal, R. W. Allen, J. P. Chrstos, Ph.D., and B. L. Aponso, “A Driving Simulator for Testing the Visibility and Conspicuity of Highway Designs and Traffic Control Device Placement,” presented at TRB Annual Meeting, Washington, D.C., January 2003. (STI-P-618)

J. G. Howe, D. Lee, Ph.D., C.-Y. Liang, Ph.D., J. P. Chrstos, Ph.D., T. T. Myers, R. W. Allen, D. J. Gorsich, and A. J. Scott, “Development of a Road/Terrain Characterization Rating Tool,” presented at SAE Truck & Bus Conference, Fort Worth, TX, November 10-11, 2003. (SAE 2003-01-3408, STI-P-627)

R. W. Allen, J. P. Chrstos, Ph.D., J. G. Howe, D. H. Klyde, and T. J. Rosenthal, “Validation of a Non-Linear Vehicle Dynamics Simulation for Limit Handling,” Journal of Automobile Engineering, Special Issue on Vehicle Dynamics, Proceedings of the Institution of Mechanical Engineers, vol. 216, no. D4, pp. 319-327, 2002. (STI-P-598)

R. W. Allen, J. P. Chrstos, Ph.D., B. L. Aponso, and D. Lee, Ph.D., “Driver/Vehicle Modeling and Simulation,” presented at SAE Automotive Dynamics and Stability Conference, Detroit, MI, May 7-9 2002. (SAE 2002-01-1568, STI-P-587)

R. W. Allen, D. Lee, Ph.D., D. H. Klyde, J. G. Howe, J. P. Chrstos, Ph.D., and T. J. Rosenthal, “Vehicle Dynamics Validation for Real-Time Simulation,” presented at Human-Centered Transportation Simulation Conference (HCTSC), Iowa City, Iowa, November 4-7, 2001. (STI-P-584)

R. W. Allen, T. J. Rosenthal, D. H. Klyde, and J. P. Chrstos, Ph.D., “Vehicle and Tire Modeling for Dynamic Analysis and Real-Time Simulation,” presented at SAE Automotive Dynamics and Stability Conference, Marriott Renaissance Center, Troy, MI, May 15-17, 2000. (SAE 2000-01-1620, STI-P-567)

R. W. Allen, J. P. Chrstos, T. J. Rosenthal, and D. H. Klyde, “Driver/Vehicle Modeling for Evaluating Roadway Designs,” presented at 80th Annual Meeting of the Transportation Research Board, Washington, D. C., January 7-11 2000. (STI-P-572)

R. W. Allen, J. P. Chrstos, Ph.D., T. T. Myers, D. W. Harwood, and W. D. Glauz, “The Capability and Enhancement of VDANL and TWOPAS for Analyzing Vehicle Performance on Upgrade and Downgrades within IHSDM,” Systems Technology, Inc., Hawthorne, CA, Final Report, FHWA-RD-00-078, STI-TR-1326-01, May 10, 1999.

R. W. Allen, T. J. Rosenthal, and J. P. Chrstos, Ph.D., “Applying Vehicle Dynamics Analysis and Visualization to Roadway and Roadside Studies,” Systems Technology, Inc., Hawthorne, CA, Technical Report, FHWA-RD-98-030, STI-TR-1301-01, November 13, 1998.

R. W. Allen, T. J. Rosenthal, D. H. Klyde, F. G. Anderson, J. R. Hogue, and J. P. Chrstos, Ph.D., “A Vehicle Dynamics Model for Low Cost, PC Based Driving Simulations,” presented at Third Driving Simulation Congress—ETNA, Paris, France, July 1997. (STI-P-538)

R. W. Allen, T. J. Rosenthal, and J. P. Chrstos, Ph.D., “A Vehicle Dynamics Tire Model for Both Pavement and Off-Road Conditions,” presented at SAE International Congress & Exposition, Detroit, MI, February 24-27, 1997. (SAE 970559, STI-P-532)

R. W. Allen, T. J. Rosenthal, B. L. Aponso, D. H. Klyde, F. G. Anderson, and J. P. Chrstos, Ph.D., “A Low Cost PC Based Driving Simulator for Prototyping and Hardware-In-The-Loop Applications,” presented at SAE International Congress & Exposition, Cobo Center, Detroit, MI, February 23-26, 1997. (SAE 980222, STI-P-541)