Component mode synthesis techniques for finite element model updating

Authors:
Costas Papadimitriou;Dimitra-Christina Papadioti
Affiliations:
-;-
Venue:
Computers and Structures
Year:
2013

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Abstract

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.