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Main Title: Application of the Craig-Bampton model order reduction method to a composite structure: MACco, COMAC, COMAC-S and eCOMAC
Author(s): Peredo Fuentes, Humberto
Zehn, Manfred
Type: Article
Language Code: en
Is Part Of: 10.14279/depositonce-6588
Abstract: The Craig-Bampton model order reduction (CBMOR) method based on the Rayleigh-Ritz approach was applied in a previous work to simulate dynamic behavior of a composite structure (CFRP) using the modal assurance criteria (MAC) and cross orthogonality (XOR) to validate the correlation. Different coordinate modal assurance criteria are applied to complement and verify the eigenfrequencies and eigenvectors obtained of the full and reduced models using substructures (super-elements). An improvement is observed per paired mode-sensor with the MAC per coordinates criterion (MACco) in a CFRP once the stiffness parameters are updated in the full model applying a mix-numerical experimental technique (MNET) using a design of experiments (DOE). The coordinate modal assurance criteria (COMAC) and the scaleCOMAC (COMACS) results of the full models display the best results respect to the reduced model. Furthermore, slight improvement of the enhanced COMAC (eCOMAC) results are observed in the reduced model despite having lower MAC performance. This approach complements the results of the previous work using several COMAC techniques, and demostrates the feasibility to achieve low COMACs results in the reduced finite element model once the stiffness parameters of the full element model are updated. The example was prepared and solved with MSC/NASTRAN SOL103 and SDTools-MATLAB for comparative purposes.
Issue Date: 2016
Date Available: 11-Apr-2018
DDC Class: 531 Klassische Mechanik, Festkörpermechanik
518 Numerische Analysis
Subject(s): CBMOR
modal analysis
Journal Title: Open Engineering
Publisher: de Gruyter
Publisher Place: Berlin
Volume: 6
Issue: 1
Publisher DOI: 10.1515/eng-2016-0024
Page Start: 185
Page End: 198
ISSN: 2391-5439
Appears in Collections:FG Strukturmechanik und Strukturberechnung » Publications

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