A New Side Impact Sled Test Rig at Magna Steyr for Validation of Virtual Side Impact Development

Arno Eichberger, Florian Wörgötter, Gunter Haberkorn, Bernhard Fellner

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

Increasing demands for reduced development costs and timeframes have
resulted in a growing need for numerical simulations to facilitate the vehicle development
process. The use of simulations is shifting towards the early design phases, a practice also
known as “frontloading.” This reduces the need for expensive, full vehicle prototypes.
In order to realise a virtual side impact development a new process has been developed (1).
Within this development process the simulation models are verified with tests of growing
complexity from component up to full vehicle system level. The key issue of this verification
procedure is a novel sled test rig that enables the replication of a full vehicle side impact test
(4), (5).
This sled test rig can be distinguished from state-of-the-art sled test rigs (2), (3) by its
conception of primarily providing data for verification of the numerical occupant simulation
rather than providing test results that prove the side impact performance of the car.
Therefore, the main focus lies in a design that results in minimum effort and need for pretests,
a high repeatability of the impact acceleration profiles, high flexibility for change of the test
set-up and minimum test costs.
The sled test rig consists of the following components: main sled (representing the full vehicle
assembly), door sled (carrying the intruding car side structure) and seat sled (allowing a
lateral seat motion). The functionality and components are discussed in detail.
Additionally, the work-flow of the validation of the virtual engineering process is explained:
Firstly, the results of a numerical finite element (FEM) simulation of a full vehicle side
impact are compared to a numerical FEM simulation of the sled test rig. Parameters of the
sled test simulation set-up are adjusted until kinematics and dummy injury responses match
the full vehicle simulation. Afterwards, the parameters of the numerical sled simulation are
directly transferred to the physical test set-up and the test is performed. A sufficient
accordance between simulation and test verifies the full vehicle simulation otherwise it has to
be reworked
Originalspracheenglisch
TitelProceedings of FISITA World Congress 2008
Seitenumfang10
PublikationsstatusVeröffentlicht - 2008
VeranstaltungFISITA World Congress 2008 - München
Dauer: 14 Sept. 200819 Sept. 2008

Konferenz

KonferenzFISITA World Congress 2008
OrtMünchen
Zeitraum14/09/0819/09/08

Treatment code (Nähere Zuordnung)

  • Application
  • Experimental

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