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Introduction to finite element analysis
Introduction to finite element analysis

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Step 7 – Post testing and verification

The model can be adapted for each new car and any tests go towards verifying the computer model on a continuing basis.

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The beauty of Red Bull’s approach to this model is that it is quite easy to match up with a real test and compare results.

The model itself has been refined over a few seasons and developed, based on subsequent testing of real tubs. This means the model can be used with confidence. Any improvements in torsional stiffness that it predicts are likely to be real.

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The National Agency for Finite Element Methods and Standards (NAFEMS) says that it is a common mistake in computer analysis to assume that the output, or results, of a processing job are as valid as the processing accuracy of the computer.

Instead NAFEMS recommends that it is safest to consider a set of results to be wrong until you are sure that they are at least of the expected orders of magnitude. For example computed reaction forces agree closely with hand calculated values and so on.

Remember, the computer won’t tell you that you’ve modelled the restraints properly, or that the material properties are correct.

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