Updating the Craig–Bampton reduction basis for efficient structural reanalysis

Akcay Perdahcioglu, D. and Ellenbroek, M.H.M. and Geijselaers, H.J.M. and Boer de, A. (2011) Updating the Craig–Bampton reduction basis for efficient structural reanalysis. International Journal for Numerical Methods in Engineering, 85 (5). pp. 607-624. ISSN 0029-5981

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Abstract:	A Combined Approximation (CA) based reanalysis technique is proposed for updating the static modes in a reduction basis which can be used for sizing optimization problems. Although the proposed technique is utilized under the framework of the Craig–Bampton (CB) method, it can be employed with any condensation procedure that involves the computation of the static modes. An automated update scheme is also presented that switches the proposed technique with the exact analysis when the computational efficiency is lost. Moreover, the Enriched Craig–Bampton (ECB) method is studied for the reanalysis of the normal modes. The ECB- and the CA-based techniques are merged for efficient update of the CB reduction basis. An academic test problem is utilized for the demonstration of the introduced concepts
Item Type:	Article
Copyright:	© 2010 John Wiley & Sons, Ltd.
Faculty:	Engineering Technology (CTW)
Research Chair:	Mechanics of Forming Technology (MFT) Structural Dynamics and Acoustics (SD&A)
Research Group:	Applied Mechanics (AM)
Link to this item:	http://purl.utwente.nl/publications/73304
Official URL:	http://dx.doi.org/10.1002/nme.2983
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