EHTC 2009

Concept Evaluation and Optimisation Tool for Rear Twist Beam Axle

Guillaume Laurent; Jérôme Naturel, ThyssenKrupp Sofedit

The RTB-Toolbox is an innovative software dedicated to the optimization of Rear Twist Beam (RTB) performances, namely Roll Over Stiffness, Kinematics and Compliance.

First of all, the beginning of the project was not only the understanding of OEM requirements for RTB with several physical tests, but also the ability to create a simple model which is precise enough to evaluate these requirements in order to answer them the fastest possible.

The first main idea of the software development presented here leads to a process creating a model in ten minutes which runs in five minutes, changing the traditional approach CAD/CAE iterations. The geometric construction of the RTB leans on a library of sections with user-defined dimensions, using a graphical intuitive interface.

The second main idea was the automatic parametrization of the CAE model in parallel of its creation, giving the possibility for users to take in account many HyperMorph shapes. It results in an automatic HyperStudy file letting the choice among launching the nominal model, optimizing it or creating a Design of Experiments.

 

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