Topics in the research area of optimization at IFB are basically connected to optimization problems concerning structural behavior and manufacturing constraints. In the CEC framework 6 project “ITOOL”, methods for designing composite profile structures have been developed. In addition, the influence of structural stitching on the failure of profile to skin connection was investigated. First approaches for the optimization of components reinforced with tailored fiber placement (TFP) patches have been elaborated. The work is continued in the CEC framework 7 project “CERFAC” for reinforcements of fastener areas. The figure shows an optimized position of stitching (T-pull test).

During the automated numerical optimization process of foldcores their geometry is varied to receive the best specific density values for selected load cases. Those sandwich structures have then the highest available stiffness with minimal weight. The figure on the right hand shows the unit cell of a 3-HAP foldcore.

Students at IFB have the chance to get in contact with optimization tools during their studies. In the “Lightweight Structures” seminar, they design and optimize e.g. the flange of a drive shaft.

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