1. Evaluation of linear and quadratic modal analysis for a partitioned FSI solver
- Author
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Bogaers, Alfred E.J., Oxtoby, Oliver F., Heyns, Johan A., Suliman, Ridhwaan, and van Zyl, Louw H.
- Subjects
fluid-structure interactions, partitioned, modal analysis, quadratic mode shape components ,Finite element method ,Elements finits, Mètode dels ,Coupled problems (Complex systems) -- Numerical solutions ,Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits [Àrees temàtiques de la UPC] - Abstract
In this paper, linear and quadratic modal approximations of elastodynamic solid deformation in FSI problems are considered. Firstly, the theory of quadratic exten- sion of modal analysis presented in [1] is laid out. The quadratic and linear approximations are then benchmarked against full FEM analysis in various test cases. These are chosen to be representative of flutter considerations in the aerospace field. The quadratic ap- proximation is shown to produce a markedly better prediciton of solid deformation for small to medium deflections.
- Published
- 2017