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5. Conclusions
• Today, simulation is typically used under predefined, predicted, and
controlled conditions. The current state of the art seems to couple
two disciplines, such as Structural Analysis and Computational Fluid
Dynamics. But a car—tested as it would be driven—should have
been tested by simulation for a combination of concurrent factors,
such as Occupant Safety, CFD, Multi-Body-Systems, Structural
Dynamics, Fatigue, and the like. Simulation and Analysis should
become more comprehensive (Ref. [16]). We should proceed in the
areas of Multi-Physics and Multi-Disciplinary Optimization.
• FE models are approximations of reality, but must be realistic and
capture the physics of the situation. Inclusion of Uncertainty will
boost the Level of Confidence. Uncertainty stems from the physics
and must be considered. The availability of powerful and low-cost
computers able to analyse parallel considerations will support this
paradigm shift dramatically.
• It has been determined from the work carried out in AUTOSIM that
the principal areas of interest and concern regarding CAE
confidence relate to the validation of CAE models, CAE staff
training, the quality of model material data and the discretisation of
CAE models.
• With Materials Characterisation clearly of high importance, a
methodology is needed to ensure that characterisation of materials
is reliable, accurate and achieving best practice; this should also
ensure that novel materials can be introduced as early as possible.
Development of an extended database holding not only basic
material properties but also essential information regarding, for
example, the effect of forming processes on material behaviour is
essential. Close collaboration between vehicle manufacturers,
material suppliers, testing houses and software developers will be
required to achieve this.
• In the future, CAE needs to take into account extended distributed
development environments to address Product Life Cycle
Management. Tools and Processes must be integrated, with
consideration given to the OEMs and Suppliers, recognizing their
knowledge and resources (Fig. 5.1 and Ref. [20]).
SIXTH FRAMEWORK PROGRAMME PRIORITY [6.2] [SUSTAINABLE SURFACE TRANSPORT]
012497 AUTOSIM
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