Response Surface–Based Finite-Element-Model Updating Using Structural Static Responses
Publication: Journal of Engineering Mechanics
Volume 137, Issue 4
Abstract
With the aid of the response surface methodology, which is a combination of mathematical and statistical techniques, this paper presents a method for updating a finite-element model based on the measured static responses of structures. Unlike in the traditional model updating procedure, original finite-element models are replaced with response surface models constructed using the uniform design. By this means the complexity of a structure can be easily expressed by explicit functions with low dimensions. A parameter scope shrinking technique is also proposed to construct response surface models. The proposed method is verified against a numerical beam and an experimental full-scale continuous box-girder bridge. It is demonstrated that the proposed response surface–based finite-element-model updating in structural statics has the advantages of easy implementation, high cost-efficiency, and adequate updating accuracy. Once the response surface model that is formulated explicitly is constructed, no finite-element calculation is required in each optimization iteration during updating. Therefore, such finite-element model updating can be easily implemented in practice with available commercial finite-element analysis packages.
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Acknowledgments
Financial supports from the China 863 Program under Grant No. UNSPECIFIED2009AA11Z101 and Research Fund for the Doctoral Program of Higher Education of China under Grant No. UNSPECIFIED20090162110051 are greatly acknowledged.
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Information
Published In
Journal of Engineering Mechanics
Volume 137 • Issue 4 • April 2011
Pages: 248 - 257
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Oct 27, 2009
Accepted: Sep 15, 2010
Published online: Oct 12, 2010
Published in print: Apr 1, 2011
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