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

Abstract : 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.
Document type :
Journal articles
Liste complète des métadonnées

Cited literature [35 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01432182
Contributor : Noura Fajraoui <>
Submitted on : Wednesday, January 11, 2017 - 3:54:23 PM
Last modification on : Tuesday, March 5, 2019 - 9:30:12 AM
Document(s) archivé(s) le : Friday, April 14, 2017 - 5:02:52 PM

File

RSUQ-2015-003.pdf
Files produced by the author(s)

Identifiers

Collections

EDF

Citation

B Sudret, H 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, Springer, 2015, 9, pp.121 - 140. ⟨10.1007/s11709-015-0290-1⟩. ⟨hal-01432182⟩

Share

Metrics

Record views

55

Files downloads

142