Abstract : In this paper, computer vision enables recommending a reduced order model for fast stress prediction according to various possible loading environments. This approach is applied on a macroscopic part by using a digital image of a mechanical test. We propose a hybrid approach that simultaneously exploits a data-driven model and a physics-based model, in mechanics of materials. During a machine learning stage, a classification of possible reduced order models is obtained through a clustering of loading environments by using simulation data. The recognition of the suitable reduced order model is performed via a convolutional neural network (CNN) applied to a digital image of the mechanical test. The CNN recommend a convenient mechanical model available in a dictionary of reduced order models. The output of the convolutional neural network being a model, an error estimator, is proposed to assess the accuracy of this output. This article details simple algorithmic choices that allowed a realistic mechanical modeling via computer vision.
https://hal-mines-paristech.archives-ouvertes.fr/hal-01955929
Contributeur : Bibliothèque Umr7633
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Soumis le : vendredi 14 décembre 2018 - 16:53:43
Dernière modification le : jeudi 7 février 2019 - 17:13:56
Document(s) archivé(s) le : vendredi 15 mars 2019 - 17:16:00
Franck N'Guyen, Selim M. Barhli, Daniel Pino Muñoz, David Ryckelynck. Computer vision with error estimation for reduced order modeling of macroscopic mechanical tests. Complexity, Wiley, 2018, 2018, 10 p. ⟨10.1155/2018/3791543⟩. ⟨hal-01955929⟩
