par Wintiba, Badadjida 
;Vasiukov, Dmytro;Panier, Stéphane;Lomov, Stepan Vladimirovitch;Ehab Moustafa Kamel, Karim ;Massart, Thierry,Jacques
Editeur scientifique Turon, Albert;Maimo, Pere;Fagerstrom, Martin
Référence ECCOMAS THEMATIC CONFERENCE ON THE MECHANICAL RESPONSE OF COMPOSITES(7: 18-20/9/2019: Girona, Spain), 7th ECCOMAS THEMATIC CONFERENCE ON THE MECHANICAL RESPONSE OF COMPOSITES - BOOK OF ABTRACTS, Vol. 1, page (16)
Publication Publié, 2019-09-20
;Vasiukov, Dmytro;Panier, Stéphane;Lomov, Stepan Vladimirovitch;Ehab Moustafa Kamel, Karim ;Massart, Thierry,Jacques Editeur scientifique Turon, Albert;Maimo, Pere;Fagerstrom, Martin
Référence ECCOMAS THEMATIC CONFERENCE ON THE MECHANICAL RESPONSE OF COMPOSITES(7: 18-20/9/2019: Girona, Spain), 7th ECCOMAS THEMATIC CONFERENCE ON THE MECHANICAL RESPONSE OF COMPOSITES - BOOK OF ABTRACTS, Vol. 1, page (16)
Publication Publié, 2019-09-20
Abstract de conférence
| Résumé : | Next to computational geometry generation methods, methods were developed based on microCT scanned 3D images for reconstructing the 3D microstructural geometry of 3D woven composites with a view to multiscale modelling. Corresponding voxel geometries are nowadays more and more used straightforwardly for mechanical simulations [1]. However, the use of voxel geometries may be questionable for damage simulation because of the spurious stresses concentration associated with the jagged shape of the mesh at the surface of yarns. To avoid such shortcomings, an automated methodology will be outlined to transform explicit voxel RVE geometries into implicit smoothed geometries through a level set-based processing. This is achieved by using a level set based post-processing tool of the smoothed data that suppresses interpenetrations between yarns [2], and that controls locally the fiber content by local modifications of the yarns cross sections. A subsequent conforming tetrahedral mesh can be generated based on the implicit geometrical description for finite elements simulations.[1] Y. Liu, I. Straumit, D. Vasiukov, S. V. Lomov, S. Panier (2017) Prediction of linear andnon-linear behavior of 3d woven composite using mesoscopic voxel models reconstructedfrom x-ray micro-tomography. Composite Structures, 179, 568-579.[2] B. Wintiba, B. Sonon, K. Ehab Moustafa Kamel, T. J. Massart (2017) An automated procedurefor the generation and conformal discretization of 3D woven composites RVEs.Composite Structures, |
