Tractor/Trailer Model Development for Finite
Element Analysis of Roadside Hardware Features
OVERVIEW The
FHWA/NHTSA National Crash Analysis Center is developing a one-of-a-kind
model that will be used to evaluate the safety performance of roadside
hardware features.
STATUS
We will provide development updates every two months as the project progresses.
7/2/01
The project is currently in the geometry digitization stage. Vehicle parts are being digitized and their mechanical properties - such as weight and
thickness - and material properties are being determined.
As a first step, the tractor/trailer will be disassembled and all parts will be weighed and material
properties catalogued.
Then, geometrical information on all parts will be digitized and stored in AutoCad computer files.
Next, the finite element mesh of each part will be generated and stored in PATRAN.
Finally, the finite element mesh of each part of the vehicle will be connected together. Different types of contacts, slide line interfaces, and material
properties will be defined.
The computer model will then be validated on both a component level and by running a full frontal impact test with rigid barriers.
The
FHWA/NHTSA National Crash Analysis Center is developing a one-of-a-kind
model that will be used to evaluate the safety performance of roadside
hardware features.