Journal
COMPUTERS & STRUCTURES
Volume 126, Issue -, Pages 15-28Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2012.10.018
Keywords
Model updating; Structural identification; Multi-objective optimization; Bayesian inference; Transitional MCMC; Component mode synthesis
Funding
- European Union (European Social Fund - ESF)
- National Strategic Reference Framework (NSRF)
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Deterministic and Bayesian finite element (FE) model updating techniques are computationally very demanding operations due to the large number of FE model re-analyses required. Component mode synthesis techniques are proposed to carry out the re-analyses efficiently in a substantially reduced space of generalized coordinates using exact component modes and characteristic interface modes computed only once from a reference FE model. The re-assembling of the reduced-order system matrices from components and interface modes is avoided. Theoretical and computational developments are demonstrated with model updating and damage identification applications for a highway bridge using a high fidelity model and simulated measurements. (C) 2012 Elsevier Ltd. All rights reserved.
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