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A new nondeterministic method for optimal selection of master degrees of freedom for dynamic condensation based on evolutionary optimization

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The following paper presents a new method for choosing a set of master degrees of freedom for the process of dynamic condensation in order to reduce a finite element model.… Click to show full abstract

The following paper presents a new method for choosing a set of master degrees of freedom for the process of dynamic condensation in order to reduce a finite element model. The general rule is that the more degrees of freedom are eliminated, the more accurate the reduced model is. However, eliminating different subsets (of equal sizes) of degrees of freedom may influence the accuracy differently. Therefore, choosing an optimal subset is crucial. The presented method is based on multicriterial evolutionary optimization which makes it the first nondeterministic approach based on computational optimization technique for this application.

Keywords: dynamic condensation; master degrees; evolutionary optimization; optimization; degrees freedom

Journal Title: Journal of Theoretical and Applied Mechanics
Year Published: 2020

Link to full text (if available)


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