Mechanics & Industry
Volume 23, 2022
|Number of page(s)||20|
|Published online||07 February 2022|
Uncertainty quantification for industrial numerical simulation using dictionaries of reduced order models
SafranTech, Rue des Jeunes Bois, Châteaufort,
2 MINES ParisTech, PSL University, Centre des matériaux (CMAT), CNRS UMR 7633, BP 87, 91003 Evry, France
* e-mail: email@example.com
Accepted: 22 December 2021
We consider the dictionary-based ROM-net (Reduced Order Model) framework [Daniel et al., Adv. Model. Simul. Eng. Sci. 7 (2020) https://doi.org/10.1186/s40323-020-00153-6] and summarize the underlying methodologies and their recent improvements. The object of interest is a real-life industrial model of an elastoviscoplastic high-pressure turbine blade subjected to thermal, centrifugal and pressure loadings. The main contribution of this work is the application of the complete ROM-net workflow to the quantification of the uncertainty of dual quantities on this blade (such as the accumulated plastic strain and the stress tensor), generated by the uncertainty of the temperature loading field. The dictionary-based ROM-net computes predictions of dual quantities of interest for 1008 Monte Carlo draws of the temperature loading field in 2 h and 48 min, which corresponds to a speedup greater than 600 with respect to a reference parallel solver using domain decomposition, with a relative error in the order of 2%. Another contribution of this work consists in the derivation of a meta-model to reconstruct the dual quantities of interest over the complete mesh from their values on the reduced integration points.
Key words: ROM-nets / nonlinear reduced order models / dictionary of reduced order models / uncertainty quantification
© T. Daniel et al., Published by EDP Sciences 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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