An enhanced Craig-Bampton method

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In this paper, we propose a new component mode synthesis method by enhancing the Craig-Bampton (CB) method. To develop the enhanced CB method, the transformation matrix of the CB method is enhanced considering the effect of residual substructural modes and the unknown eigenvalue in the enhanced transformation matrix is approximated by using O'Callahan's approach in Guyan reduction. Using the newly defined transformation matrix, original finite element models can be more accurately approximated by reduced models. For this reason, the accuracy of the reduced models is significantly improved with a low additional computational cost. We here present the formulation details of the enhanced CB method and demonstrate its performance through several numerical examples.
Publisher
WILEY-BLACKWELL
Issue Date
2015-07
Language
English
Article Type
Article
Keywords

COMPONENT MODE SYNTHESIS; DYNAMIC ANALYSIS; INTERPOLATION; REDUCTION

Citation

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, v.103, no.2, pp.79 - 93

ISSN
0029-5981
DOI
10.1002/nme.4880
URI
http://hdl.handle.net/10203/200081
Appears in Collection
ME-Journal Papers(저널논문)
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