The work introduces new advanced numerical tools for data assimilation in structural mechanics. Considering the general Bayesian inference context, the proposed approach performs real-time and robust sequential updating of selected parameters of a numerical model from noisy measurements, so that accurate predictions on outputs of interest can be made from the numerical simulator. The approach leans on the joint use of Transport Map sampling and PGD model reduction into the Bayesian framework. In addition, a procedure for the dynamical and data-based correction of model bias during the sequential Bayesian inference is set up, and a procedure based on sensitivity analysis is proposed for the selection of the most relevant data among a large set of data, as encountered for instance with full-field measurements coming from digital image/volume correlation (DIC/DVC) technologies. The performance of the overall numerical strategy is illustrated on a specific example addressing structural integrity on damageable concrete structures, and dealing with the prediction of crack propagation from a damage model and DIC experimental data.
Accepted:
Published online:
Paul-Baptiste Rubio 1; Ludovic Chamoin 1, 2; François Louf 1
@article{CRMECA_2019__347_11_762_0,
author = {Paul-Baptiste Rubio and Ludovic Chamoin and Fran\c{c}ois Louf},
title = {Real-time {Bayesian} data assimilation with data selection, correction of model bias, and on-the-fly uncertainty propagation},
journal = {Comptes Rendus. M\'ecanique},
pages = {762--779},
publisher = {Elsevier},
volume = {347},
number = {11},
year = {2019},
doi = {10.1016/j.crme.2019.11.004},
language = {en},
}
TY - JOUR AU - Paul-Baptiste Rubio AU - Ludovic Chamoin AU - François Louf TI - Real-time Bayesian data assimilation with data selection, correction of model bias, and on-the-fly uncertainty propagation JO - Comptes Rendus. Mécanique PY - 2019 SP - 762 EP - 779 VL - 347 IS - 11 PB - Elsevier DO - 10.1016/j.crme.2019.11.004 LA - en ID - CRMECA_2019__347_11_762_0 ER -
%0 Journal Article %A Paul-Baptiste Rubio %A Ludovic Chamoin %A François Louf %T Real-time Bayesian data assimilation with data selection, correction of model bias, and on-the-fly uncertainty propagation %J Comptes Rendus. Mécanique %D 2019 %P 762-779 %V 347 %N 11 %I Elsevier %R 10.1016/j.crme.2019.11.004 %G en %F CRMECA_2019__347_11_762_0
Paul-Baptiste Rubio; Ludovic Chamoin; François Louf. Real-time Bayesian data assimilation with data selection, correction of model bias, and on-the-fly uncertainty propagation. Comptes Rendus. Mécanique, Data-Based Engineering Science and Technology, Volume 347 (2019) no. 11, pp. 762-779. doi : 10.1016/j.crme.2019.11.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2019.11.004/
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