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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/10777

Title: Multi-objective optimization framework for finite element model updating and response prediction variability.
Authors: Ntotsios, Evangelos
Papadimitriou, Costas
Issue Date: 2008
Publisher: American Society of Civil Engineers (ASCE)
Citation: NTOTSIOS, E. and PAPADIMITRIOU, C., 2008. Multi-objective optimization framework for finite element model updating and response prediction variability. Presented at the Inaugural International Conference of the Engineering Mechanics Institute (EM08), 18th-21st May 2008, University of Minnesota, Minneapolis, Minnesota, US.
Abstract: A multi-objective optimization framework based on modal data is presented for finite element model updating in structural dynamics. The framework results in multiple Pareto optimal structural models that are consistent with the measured data and the norms used for reconciling finite element models with data. Computationally efficient methods for estimating the gradients and Hessians of the objective functions with respect to the model parameters are proposed and shown to significantly reduce the computational effort for solving the single or multi-objective optimization problems. Theoretical and computational developments are addressed and demonstrated by updating the finite element model of a concrete bridge structure using modal data identified from ambient acceleration time history measurements. The results clearly indicate that there is wide variety of Pareto optimal structural models that trade off the fit in various measured quantities. The variability in Pareto models affect the variability in response predictions.
Description: This conference paper is closed access.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/10777
Appears in Collections:Closed Access (Civil and Building Engineering)

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