Applications
Some examples of applications of the CMS reduction technique include:
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In multibody dynamics models, you usually have a number of physical components, coupled by joints. The ultimate reduction is then to use rigid domains. When it is necessary to take the flexibility of a component into account, using a reduced flexible component is attractive.
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In rotordynamics, it is common that the foundation supporting the rotor must be part of the analysis. Such a foundation will almost invariably have linear properties. It is then well suited to be considered as a reduced flexible component. This can greatly reduce the number of the degrees of freedom in the rotordynamic analysis, which is often computationally heavy.
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In many situations, only a smaller part of a model is nonlinear. It is then possible to reduce the linear parts once and for all, and then iterate on a much smaller nonlinear system of equations. For this to be feasible, it must however be possible to dissect the structure in a way that can be represented by attachments.