There are many ways of generating models for FEM-simulation. Depending on the starting point existing CAD-data can be used, alternatively parameters can be computed from an existing object or a new model can be generated. For this different tools are used.
Commercial pre- and postprocessor GiD
When data is already existent in any kind of CAD-format, the Measurement Engineering Group uses different commercial CAD tools to prepare the data for numeric acoustical simulations. Also the necessary discretization is done, so that both consistent structural and mesh models are available. The actual simulation is done with a commercial finite element software package, which is specialized to calculate electro-mechanical problems, even if they are nonlinear.
Script-based model generation
Just in case of optimization the analysis of a static model often is not sufficient since the influence of single model parameters can be judged not or only on a very small scale. As a solution the Measurement Engineering Group has developed an individual toolbox for Matlab®, which makes a variable generation process for models possible. Using this toolbox, a range for each of the model's properties (material, size, stimulus etc.) can be selected which are then evaluated with the help of different optimization strategies. This way individual or multiple properties can be varied explicitly and wanted influences can be identified. This system generates a numeric simulation model, which is then calculated with the help of a commercial solver, just as in the static case.