F800 Single Unit Truck FEM Model for Crash Simulations with LS-DYNA

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Methodology for Validation and Documentation of Vehicle Finite Element Crash ModelS for Roadside Hardware Applications


This document reports the results of an evaluation of the Ford F800 single-unit truck (SUT) Heavy Vehicle Finite Element (FE) Model, and the subsequent improvements and enhancements made to that FE Model. The SUT model was developed by the Federal Highway Administration (FHWA) at the National Crash Analysis Center (NCAC) as a bullet vehicle for modeling heavy vehicle interactions with roadside hardware.

This research was performed as a collaborative effort by Battelle Memorial Institute (BMI), the Oak Ridge National Laboratory (ORNL) and the University of Tennessee under auspices of the project on Heavy Vehicles at the National Transportation Research Center, Inc. (NTRC Inc.). The purpose of this task was to model and assess different scenarios of truck vehicle run-off-road collisions with roadway infrastructure elements, vehicle structural modes of failure, and subsequent vehicle stability.

The model modifications, improvements and enhancements that resulted from this study were ultimately implemented by NCAC into the Ford F800 SUT finite element model. A list of the actual model modifications, which improved the model's accuracy for roadside hardware impact analyses, is included. These modifications did not decrease the model's computational efficiency for crash simulations.

Impact of the SUT model with a Single-Slope Bridge Rail and a New Jersey style barrier, were simulated. The initial overall evaluations of the original SUT model that led to the recommendations for model modifications were performed using these two barriers, but the final evaluation of the enhanced model concentrated only on impact with the Single-Slope Bridge Rail. The evaluation process, the enhancements made to the model and the final evaluation of the enhanced model are discussed in this report.


This Heavy Vehicle Safety Research project was sponsored by the U.S. Department of Transportation/Federal Highway Administration under cooperative agreement #DTFH61-03-X-00030 with NTRCI.


Last Updated: Wednesday, November 30, 2005
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