Virtual Distortion Method-Based Finite Element Model Updating of Bridges by Using Static Deformation
Publication: Journal of Engineering Mechanics
Volume 143, Issue 3
Abstract
A superelement-based virtual distortion method (VDM) was proposed to improve the efficiency of the finite element model (FEM) updating of large-scaled bridges by using static information. On one side, VDM was deemed as a new type of metamodel for static analysis of structures, i.e., a surrogate model of FEM for bridges. In this way, the efficiency of FEM updating could be improved dramatically because massive iterative calculations need to be implemented during the process of FEM updating. On the other side, the superelement was applied to reduce the size of the influence matrix which was the kernel of building VDM; therefore, it is effective to enhance the efficiency of generating the metamodel (VDM) of large-scale bridges. Finally, with the measured static deformation data, the effectiveness of the proposed method was demonstrated by updating the FEM of a practical bridge.
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Acknowledgments
The first author thankfully acknowledges the support of this work by Heilongjiang Province Natural Science Foundation (grant number: E080509).
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 3 • March 2017
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Dec 31, 2014
Accepted: Jul 22, 2015
Published online: Sep 2, 2015
Discussion open until: Feb 2, 2016
Published in print: Mar 1, 2017
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