Finite-Element Crash Test Simulation of New York Portable Concrete Barrier with I-Shaped Connector
Publication: Journal of Structural Engineering
Volume 132, Issue 3
Abstract
Use of finite-element simulations in designing and analyzing roadside hardware has increased significantly over the past decade. Due to considerable progress in computer technology in conjunction with nonlinear finite-element software, outcome of complex vehicle-roadside hardware collisions can be accurately predicted using simulation programs. In this paper, the finite-element simulation program LS-DYNA was used to analyze and improve the crash test behavior of New York Department of Transportation Portable Concrete Barrier (NYPCB). A full-scale crash test demonstrated that the current NYPCB design was unable to meet national standards. Inspections after the test revealed that the welding at metal connectors forming the joint between the barrier segments was not properly fabricated. A finite-element representation of the crash-tested barrier was developed with a special fillet weld with failure model and subjected to crash testing using the nonlinear finite-element code LS-DYNA. This baseline model simulation was intended to replicate the failed crash test and validate the fidelity of the finite-element models. Qualitative and quantitative comparisons show that the baseline model simulation was successful in replicating the failed crash test. Upon validation, an improved NYPCB model was developed by using proper welding details and subjected to full-scale impact simulation to determine whether this design would satisfy the crash testing requirements. Results of the simulation were encouraging. It was predicted that the barrier would successfully contain and redirect the impacting vehicle in a stable manner. Subsequent full-scale crash testing on the NYPCB with proper welding details passed the NCHRP Report 350 requirements and substantiated LS-DYNA predictions.
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Acknowledgments
The writer is thankful to Dr. Hayes E. Ross, Jr., Dr. Roger P. Bligh, Dr. Akram Abu-Odeh, and Ms. Wanda L. Menges at Texas Transportation Institute for providing the opportunity and crash test data to complete this study. Also, help by Dr. Dhafer Marzougui at National the National Crash Analysis Center is gratefully acknowledged.
References
Abu-Odeh, A. Y., Albin, R. B., and Bullard, D. L. (2002). “Finite element simulations and testing of Washington State precast concrete barrier.” Proc., 7th International LS-DYNA User’s Conference, Paper No. 7-23, Dearborn, Mich.
Abu-Odeh, A. Y., Bligh, R. P., and Hamilton, M. H. (2003). “Analysis and design of the Texas T6 breakaway bridge railing system using finite element methodology.” TRB Paper No. 03-2219, Transportation Research Board, Washington, D.C.
Atahan, A. O. (1999). “Analytical analysis of the New York DOT portable concrete barrier with I-beam connection.” Unpublished final report for CVEN 685 Directed Studies, Texas A&M Univ., College Station, Tex.
Atahan, A. O., and Cansiz, O. F. (2005). “Impact analysis of a vertical flared back bridge rail-to-guardrail transition structure using simulation.” Finite Elem. Anal. Design, 41(4), 371–396.
Bligh, R. P., Mak, K. K., and Menges, W. L. (2003). “Work zone appurtenances tested to NCHRP Report 350.” Report No. FHWA-RD-03-038, Federal Highway Administration, Washington, D.C.
Consolazio, G., Chung, J., and Gurley, K. (2003). “Impact simulation and full scale crash testing of a low profile concrete work zone barrier.” Comput. Struct., 81(13), 1359–1374.
Graham, J. L., Loumiet, J. R., and Migletz, J. (1987). “Portable concrete barrier connections.” Report No. FHWA-TS-88-006, Federal Highway Administration, Washington, D.C.
Hallquist, J. O. (1998). LS-DYNA theoretical manual, Livermore Software Technology Corporation, Livermore, Calif.
Hamilton, M. E. (1999). “Simulation of T6 bridge rail system using LS-DYN3D.” MS thesis, Texas A&M Univ., College Station, Tex.
Livermore Software Technology Corporation (LSTC). (2000). A general purpose dynamic finite element analysis program: LS-DYNA version 960 user’s manual, Livermore Software Technology Corporation, Livermore, Calif.
Mak, K. K., Bligh, R. P., Menges, W. L., and Schoeneman, S. K. (1999). “NCHRP Report 350 test 3-11 of the New York DOT portable concrete barrier with I-beam connection.” TTI Test Report 473220-7, Texas Transportation Institute, College Station, Tex.
Marzougui, D., Bahouth, G., Eskandarian, A., Meczkowski, L., and Taylor, H. (1998). “Evaluation of portable concrete barriers using finite element simulation.” FHWA Conference Presentation, Washington, D.C.
National Crash Analysis Center (NCAC). (2002). “Public finite element model archive: Vehicle models.” Federal Highway Administration, George Washington Univ., Washington, D.C., ⟨http://www.ncac.gwu.edu/archives/model/index.html⟩.
Reid, J. D. (2004). “LS-DYNA simulation influence on roadside hardware.” TRB Paper No. 04-2619, Proc., 83rd Annual Meeting, Transportation Research Board, Washington, D.C.
Ross, H. E., Jr., Sicking, D. L., Zimmer, R. A., and Michie, J. D. (1993). “Recommended procedures for the safety performance evaluation of highway features.” NCHRP Report 350, National Research Council, Washington, D.C.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 3 • March 2006
Pages: 430 - 440
Copyright
© 2006 ASCE.
History
Received: Nov 22, 2004
Accepted: Jun 27, 2005
Published online: Mar 1, 2006
Published in print: Mar 2006
Notes
Note. Associate Editor: Marc I. Hoit
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