for Validation and Documentation of Vehicle Finite Element Crash ModelS for
Roadside Hardware Applications
The main objectives of this
research task were to conduct an in-depth evaluation of the Single Unit Truck
(SUT) finite element model with respect to its ability to accurately simulate
its interaction with roadside safety hardware and to identify areas of possible
improvements. The model's primary purpose is to be used as a bullet object
for computational evaluation of road safety hardware.
A cooperative effort between
the National Transportation Research Center (NTRC), Oak Ridge National
Laboratory (ORNL), Battelle, and NCAC was initiated to update and enhance the
kinematic and structural accuracy of NCAC's Ford F800 Single Unit Truck FE
model. This document outlines the methodology used in evaluating, validating against
experimental data and updating the FE model. A new Hypertext Markup Language
(HTML)-based documentation has been developed to facilitate the model adoption
and understanding of prospective users. The overall methodology used by the
participants - from evaluation to validation to documentation - is outlined in
this report and can be applied to other basic vehicle FE model currently
available in public domain.
The analysis of the model and
comparison between simulations and tests lead to recommendations for the SUT
model modifications that were implemented by the original developers of the
model, National Crash Analysis Center (NCAC) and participants in this project,
Battelle, Oak Ridge National Laboratory and University of Tennessee. The goal
of the project was also to establish a methodology for validation and
verification of the finite element models used in roadside hardware analysis so
that it could be applied to other vehicle finite element models currently under
Interactive Web-Based User Manual
This website documents the
model and allows the user to visualize all the main components of the model,
including mechanical and material properties, detailed information regarding
their connection to other components, and detailed contact information used in
defining interaction between the various parts. The goal of the interactive 3D
environment is to make the model more accessible to the end users and to
facilitate transfer of the developed models and technologies to the end users.
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.
Use of the supercomputers at
the ORNL Center for Computational Sciences (CCS) is gratefully acknowledged.
Our thanks to Roger Bligh of
the Texas Transportation Institute for his generous contribution of the
experimental test data that was essential to this study
Our thanks to
NCAC staff – Dr. Leonard Meczkowski, Dr. Dhafer Marzougui, and Dr.
Cing-Dao (Steve) Kan for their continuing support, help and advice on this