Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Frontiers of Structural and Civil Engineering Année : 2015

Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements

Résumé

The spatial variability of stress fields resulting from polycrystalline aggregate calculations involving random grain geometry and crystal orientations is investigated. A periodogram-based method is proposed to identify the properties of homogeneous Gaussian random fields (power spectral density and related covariance structure). Based on a set of finite element polycrystalline aggregate calculations the properties of the maximal principal stress field are identified. Two cases are considered, using either a fixed or random grain geometry. The stability of the method w.r.t the number of samples and the load level (up to 3.5 % macroscopic deformation) is investigated.
Fichier principal
Vignette du fichier
RSUQ-2015-003.pdf (4.44 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01432182 , version 1 (11-01-2017)

Identifiants

Citer

B Sudret, H X Dang, M Berveiller, A Zeghadi, T Yalamas. Characterization of random stress fields obtained from polycrystalline aggregate calculations using multi-scale stochastic finite elements. Frontiers of Structural and Civil Engineering, 2015, 9, pp.121 - 140. ⟨10.1007/s11709-015-0290-1⟩. ⟨hal-01432182⟩

Collections

CNRS EDF
37 Consultations
57 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More