Component mode synthesis methods using interface modes. Application to structures with cyclic symmetry

Classical component mode synthesis methods can generate coupled systems with large size due to the important number of degrees of freedom at the interface. A method is proposed to reduce the number of interface coordinates in the component mode synthesis methods. This procedure, already available fo...

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Bibliographic Details
Published in:Computers & structures 2001, Vol.79 (2), p.209-222
Main Author: Tran, D.-M.
Format: Article
Language:English
Subjects:
Component mode synthesis
Cyclic symmetry
Dynamic substructuring
Eigenfrequency and modes
Frequency response
Rayleigh–Ritz projection
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Summary:Classical component mode synthesis methods can generate coupled systems with large size due to the important number of degrees of freedom at the interface. A method is proposed to reduce the number of interface coordinates in the component mode synthesis methods. This procedure, already available for the fixed interface method, is extended to the free and hybrid interface methods. It is based on the use of a truncated basis of interface modes in place of the constraint modes, which are introduced in the free and hybrid interface methods. Classical and new methods are applied to structures with cyclic symmetry in combination with the wave propagation properties. The eigensolutions and the frequency response obtained with these methods are compared on a numerical example.
ISSN:0045-7949
1879-2243
DOI:10.1016/S0045-7949(00)00121-8