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CURRENT & FUTURE TECHNOLOGIES IN AUTOMOTIVE ENGINEERING SIMULATION
In addition to the material models used other topics, such as model creation
and quality of measured properties, may affect the choice made. If we list
the issues raised by CAE engineers we find a general need for
improvement in current practice for materials characterisation as follows:
• For modelling plastics, foams, and reinforced plastics, best practice
is rarely used.
• The influence of the production process is not sufficiently taken into
account.
• CAE engineers need better training to use best practice materials
characterisation.
• For many best practice methods, input data relevant to material
models are missing.
• Along with material issues, other demands seem to have just as
important an influence on the product quality or development
process.
4.3.4 Best Practice—When to use it?
An important topic that has been discussed intensely is the impact of a
defined best practice on the time taken during development to apply it. The
main problems with using best practice materials characterisation in the
complete development process are as follows:
• Relevant test data is not available.
• In the early phase, decisions about which material to use have not
been made.
• Geometry data is insufficient and inaccurate in the early
development phase.
• Working with characteristic curves for concept evaluation is faster.
• Rapid geometry changes dominate the early development phase.
The chart below (Fig. 4.3.4.1) illustrates the potential benefit of applying
best practice materials characterisation in relation to the phases in the
development process.
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SIXTH FRAMEWORK PROGRAMME PRIORITY [6.2] [SUSTAINABLE SURFACE TRANSPORT]
012497 AUTOSIM