Robust Design - Dynardo GmbH
Robust Design - Dynardo GmbH
Robust Design - Dynardo GmbH
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DYNARDO • © <strong>Dynardo</strong> <strong>GmbH</strong> 2012<br />
<strong>Robust</strong>ness and Stability of the Model<br />
Which quantity of „numerical noise“ is acceptable?<br />
� Quantification via coefficients of prognosis (CoP)<br />
� Estimation of numerical noise: 100% - CoP<br />
Experience in passive safety, CFD or<br />
crashworthiness tells that result values<br />
with lower CoP than 80% show:<br />
- High amount of numerical noise<br />
resulting from numerical approximation<br />
method (meshing, material, contact,..)<br />
- Problems of result extractions<br />
- Physically instable behavior<br />
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