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Virtual development in the automotive industry like other development processes is always under pressure to improve the processes to save time and costs. In addition, the analyses should include optimization techniques to get the best relation between weight and stiffness. But it emerges that vibration analysis must also be included in the optimization at the same time. So, the situation in virtual development can be characterized by severe time constraints and a need to increase the complexity of the analysis and the processes. One possible solution for these conflicting positions is to improve the processes and methods for structural optimization and the meshing for fluid structure analysis.