{"id":2029,"date":"2018-04-23T11:16:06","date_gmt":"2018-04-23T10:16:06","guid":{"rendered":"https:\/\/www.mines-stetienne.fr\/en\/?page_id=2029"},"modified":"2024-05-02T07:42:06","modified_gmt":"2024-05-02T06:42:06","slug":"research-topics","status":"publish","type":"page","link":"https:\/\/www.mines-stetienne.fr\/en\/author\/drapier\/research-topics\/","title":{"rendered":"Research Topics"},"content":{"rendered":"

Current Ph. D theses under my (co)-supervision – Model Order Reduction<\/em> :<\/h2>\n

27. XXXXX, A contribution to the design of a \u2018Blended Wing Body\u2019 fuselage with carbon\/thermoplastic composites for regional electric propulsion aviation, industrial \/ governmental funding (EENUEE), <\/strong>co-directors Ass Prof. P. Baral and R. Ferrier, 2024-2027<\/em><\/p>\n

Topological multi-scale and multi-objective optimisation applied to a composite BWB fuselage.<\/span><\/p>\n

26. M. Ghestin, Apports de l\u2019apprentissage machine pour l\u2019acc\u00e9l\u00e9ration des calculs multi-\u00e9chelles et multi-temporels \u2013 application \u00e0 l\u2019\u00e9laboration de structures composites par infusion, Hexcel Chair funding, <\/strong>co-directors Prof. N. Moulin, Ass. Prof. R. Ferrier, and Prof. J. Bruchon, 2020-2023<\/em><\/p>\n

POD-ROM built from stationary coarse models to produce reduced models of transient tow-phase flows.<\/span><\/p>\n

Ph. D theses defended under my (co)-supervision :<\/h2>\n

Process modelling<\/h3>\n

25. A. Geoffre, Upscaling impregnation flows in random fibrous media – Application to infusion-based manufacturing process of composite materials, <\/em>Hexcel Chair funding, <\/strong>co-directors Prof. J. Bruchon and Prof. N. Moulin, 2019-2022<\/p>\n

\"\"<\/p>\n

What type of two-phase flow representation, depending on the medium size compared with the charactertistic size of the RVE : (right) homogeneous equivalent medium (Darcy) can be used with proper stochastic permeabilities (stationary and transient, potentially dependent on the Ca regime), capillary pressure and saturation (porisity map), or (left) DNS required but may be converted to Darcy’s-like (if necessary) response from pressure drop vs velocity response. (centre) too strong discontinuities in the micro-structure require DNS with no possible equivalence.
\n<\/em><\/p>\n

24. B. Durif, Mise en forme de renforts secs non-tiss\u00e9s nouvelle g\u00e9n\u00e9ration pour applications structures primaires a\u00e9ronautiques, <\/em>industrial \/ governmental funding (Hexcel Reinf.), <\/strong>co-director Ass Prof. N. Moulin, 2019-2022<\/p>\n

\"\"
\nHiTape(R) forming simulation with Abaqus(R): single ply representation with embedded membrane FE into CSS8 solid-based shell elements for membrane-bending decoupling + non-linear bending relationship + anisotropic constitutive laws. Cohesive surfaces for the interface representation in ply stackings. Finite transformation framework.
\n<\/em><\/p>\n

23. M. Gibaud, Fonctionnalisation et durabilit\u00e9 de composites hybrides bio-sourc\u00e9s \u00e9labor\u00e9s par proc\u00e9d\u00e9s directs,<\/em>governmental funding<\/strong>, co-advisor Ass Prof. P.-J. Liotier, 2016-2019<\/del><\/p>\n

22. L. Bouquerel, Contribution \u00e0 l\u2019\u00e9tude de la mise en forme de renforts secs non-tiss\u00e9s nouvelle g\u00e9n\u00e9ration pour applications structures primaires a\u00e9ronautiques,<\/em> industrial\/governmental funding (Hexcel Reinf.), <\/strong>co-director Prof. P. Boisse (LAMCOS) and co-advisor Ass Prof. N. Moulin, 2016-2019 Awarded best PhD student for SAMPE France 2018.<\/strong><\/p>\n

\"\"<\/a>Modelling approach with specific hyperelastic behaviours for the fibrous layer response and adapted cohesive zones handling friction and adhesion for the interface.<\/em><\/p>\n

21. K. Andriamananjara, Approche num\u00e9rique des couplages Stokes-Darcy dans les pr\u00e9formes f<\/em>aiblement perm\u00e9ables subissant de grandes transformations – mod\u00e9lisation des proc\u00e9d\u00e9s par infusion de r\u00e9sine de structures a\u00e9ronautiques primaires<\/em>, Hexcel Chair funding, <\/strong>co-director Prof. J. Bruchon and Ass Prof. N. Moulin, 2015-2018<\/p>\n\n\n\n
\"\"<\/a><\/td>\n\"\"<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Presure enrichment for capillary integration at the flow front and T-stiffener infusion simulation accounting for orthtropic capillarity in orthotropic fibrous preforms (magenta front) compared to without capillarity (green front).<\/em><\/p>\n

20. L. Chevalier, Approche num\u00e9rique des \u00e9coulements Stokes-Darcy et de la capillarit\u00e9 pour mod\u00e9liser les\u00a0 proc\u00e9d\u00e9s par infusion de r\u00e9sine de structures primaires a\u00e9ronautiques<\/em>, Hexcel Chair funding, <\/strong>co-director Prof. J. Bruchon and Ass Prof. P.J. Liotier, 2015-2018<\/p>\n\n\n\n
\"\"<\/a><\/td>\n\n

\"\"<\/a><\/h2>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Capillary wicking in a cluster of tubes, and capillary pressure assessment from transient (capillary) flow in a 2D micro-structure.<\/em><\/p>\n

19. M. Pucci \u00c9laboration de composites bio-sourc\u00e9s par proc\u00e9d\u00e9s d\u2019\u00e9laboration directe. Effet des interfaces lors de l\u2019impr\u00e9gnation<\/em>.<\/strong>\u00a0co-advisor Ass Prof. P.J. Liotier, 2013-2016<\/p>\n

\"\"

Washburn experiment with water on natural and retified – thermal treatment – flax tows. Side view of the external wetting meniscus<\/em><\/p><\/div>\n

18. M. Blais, 13th<\/sup> March 2016, Mod\u00e9lisation et suivi du proc\u00e9d\u00e9 par infusion de r\u00e9sine sur une nouvelle g\u00e9n\u00e9ration de renforts pour applications structures primaires a\u00e9ronautiques<\/em>, industrial\/governmental funding (Hexcel Reinf.), <\/strong>co-advisor Ass Prof. P.J. Liotier and Ass Prof. N. Moulin, 2012-2015<\/p>\n

\"\"

Resin pressure in fluid (distribution medium) and porous (preforms) regions during the infusion of a slice of auto-stiffened panel – comparison of isotropic vs orthropic case. Zebulon FE code.<\/em><\/p><\/div>\n

16. H. Tossoukp\u00e9, 6th<\/sup> December 2013, High performance computing for grain-scale simulation of the sintering in doped and multi-materials<\/em>, ANR funding<\/strong>, co-advisors Ass Prof. J. Bruchon and Prof. F. Valdivieso, 2010-2013<\/p>\n\n\n\n
\n
\"\"

Sintering of non-doped and modo-doped grain stackings<\/em><\/p><\/div><\/td>\n

\n
\"\"<\/a>

Pressure disctribution during sintering of a reactive particle stack containg inert particles (I). HPC computing with CIMLIB FE code.<\/em><\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

15. L. Abouorm, 27th<\/sup> September 2013 , VMS (Variational MultiScale) stabilization for Stokes-Darcy coupled flows in porous media undergoing finite deformations: application to infusion-based composite processing, co-advisors <\/em>Ass. Prof. J. Bruchon and Dr Ing. N. Moulin.<\/p>\n\n\n\n
\"\"<\/td>\n\n
\"\"

Shell with a thin distribution medium, and RIGHT – flow front in fluid and porours region – final permeability 10-15 m2. Zebulon FE code.<\/em><\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

14. A. Dereims, 8th<\/sup> July 2013 Industrialisation de simulations de proc\u00e9d\u00e9s pour composites – couplages fluides \/ solides en grandes transformations<\/em>, industrial\/governmental funding (ESI Group)<\/strong>, co-advisor Prof J.-M. Bergheau (ENISE\/LTDS)<\/p>\n

\"\"

1\/4 model of a T-stiffened panel – filling ratio over time and final porosity on the final deformed shape. PAM-RTM\u00ae FE code.<\/em><\/p><\/div>\n

13. D. Pino-Mu\u00f1oz, 26th<\/sup> October 2012, High-performance computing of the sintering at particle scale<\/em>, co-advisors Ass. Prof J. Bruchon and Ass. Prof. F. Valdivieso. Awarded best 2012 Phd thesis for the Computational Structural Mechanics Association<\/strong><\/p>\n\n\n\n
\n
\"\"

Sintering by surface and volume diffusion at particle scale.<\/em><\/p><\/div><\/td>\n

\n
\"\"

Regularisation strategies to grasp strong pressure gradients including Laplace’s law for a 2-particles set, and RIGHT – sintering of a grain stacking. HPC computing with CIMLIB FE code.<\/em><\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

12. Y. Hou, 25th<\/sup> October 2012 In-plane air permeability characterization for LCM processing of composites<\/em>, European project INFUCOMP<\/strong>, co-advisor Prof. C. Binetruy (ENSTIM Douai, now Ecole Centrale de Nantes-GeM).<\/p>\n\n\n\n
\n
\"\"

Air-permeability characterisation.<\/em><\/p><\/div><\/td>\n

\n
\"\"

Air-permeability bench and RIGHT – measurements comparisons with liquid permeability results obtained by Comas-Cardona et al.<\/em><\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

11. M. Waris, 24th<\/sup> Septembre 2012 Mise en oeuvre, instrumentation, validation et mod\u00e9lisation d’un syst\u00e8me d’injection RTM pour la fabrication de structures composites de hautes performances<\/em>, LCM-SMART national project<\/strong>, initial supervisor Prof. A. Vautrin<\/p>\n

\"\"

Residual strain measured using optical fibre sensors (Bragg grating) during a composite thermo-mechanical manufacturing cycle – compaction, injection, curing; effect of the mold constitutive material on the residual strain level. Validated by residual curvatures on [0\/90] plates.<\/em><\/p><\/div>10. O. Klinkova, June 2012 Mod\u00e9lisation de l\u2019usinage de composites et effets sur la redistribution des contraintes internes dues \u00e0 la cuisson<\/em>, LCM-SMART national project<\/strong>, co-advisor Prof J.-M. Bergheau (ENISE\/LTDS) 2008-2012. Awarded best PhD student for SAMPE France and SAMPE Europe in 2011; selected for SAMPE World conference.<\/strong><\/p>\n\n\n\n
\n
\"\"

Thermo-mechanical approach of composite manufacturing – curing and post-curing. LEFT – prediction of the residual stress in a 90\u00b0-angle composite part,<\/em><\/p><\/div><\/td>\n

\n
\"\"

Effect of machining on internal stresses using an equivalent thermo-mechanical loading. Sysply\u00ae FE code.<\/em><\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

9. G. Pacquaut, 9th<\/sup> December 2010 Mod\u00e9lisation num\u00e9rique des fronti\u00e8res mobiles dans le cas du\u00a0 transport \/ diffusion au cours de proc\u00e9d\u00e9s d\u2019\u00e9laboration directe<\/em>, co-advisor Ass. Prof J. Bruchon<\/p>\n

\"\"

Coupling fluid, porous, and solid mechanics to model infusion-bases processes : thickness variations and filling (blue=air, red=resin). Zebulon FE code.<\/p><\/div>\n

8. P. Wang, January 2010 : Etude num\u00e9rique et exp\u00e9rimentale des proc\u00e9d\u00e9s d\u2019\u00e9laboration de mat\u00e9riaux composites par iunfusion de r\u00e9sine<\/em>, co-advisors Prof. A. Vautrin and Ass. Prof J. Molimard. Industrial collaboration with Hexcel <\/strong>and ESI Group<\/strong>.<\/p>\n

\"\"

Flow front position during resin-infusion based processes : comparison of experimental positions detected with thermo-couple sensors, with numerical simulations results using permeability data depending, or not, on local porosity. PAM-RTM\u00ae FE code.<\/p><\/div>\n

6. P. Celle, December 2006 : Couplages fluide\/milieu poreux en grandes d\u00e9formations pour la simulation des proc\u00e9d\u00e9s d\u2019\u00e9laboration par infusion<\/em>, co-advisor Prof J.-M. Bergheau (ENISE\/LTDS)<\/p>\n\n\n\n
\n
\"\"

Infudison-based processes modelling.<\/p><\/div><\/td>\n

\n
\"\"

Mechanistic framework for coupling fluid, solid, and porous mechanics in non-isothermal conditions, and RIGHT – initial conditions and pressure-velocity distributions after vacuum pulling and resin infusion. PAM-RTM\u00ae software<\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3. O.Elbouazzaoui,\u00a0 January 2004 : Mod\u00e9lisation thermo-m\u00e9canique et physique du process de fabrication de <\/em>NC2 par infusion <\/em>\u2013 related to a regional project <\/strong>NC2<\/strong> <\/em>with Hexcel<\/strong>, supervision 90 %, with Prof. A.Vautrin.<\/p>\n\n\n\n
\"\"<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Transient transverse permeability measurement facility using optical fibre sensors and corresponding results – along with stationary measurement results- for stitched biaxial NC2\u00ae materials.<\/p>\n

Biomechanics<\/h3>\n

7. L. Bouten, March 2009 : Identification des propri\u00e9t\u00e9s m\u00e9caniques des tissus constitutifs du mollet pour l\u2019\u00e9tude m\u00e9canique de la contention<\/em>, industrial collaboration\u00a0 with BV-Sport<\/strong><\/p>\n

\"\"

Section of a human leg with lipidous tissues reconstructed from MRI images, and corresponding pressure distribution obrained by FE models. Zebulon FE code.<\/p><\/div>\n

5. G. Fleury, December 2006 : Etude, conception, et realisation en technologie MEMS d\u2019un commutateur m\u00e9caniquement bistable<\/em>, CEA funding<\/strong>, co-advisor Prof. R. Fortunier.<\/p>\n

\"\"

Bi-stable MEMs commutator for bio-medical applications<\/p><\/div>\n

4. I. Gaied, December 2004 : Mod\u00e9lisation et pr\u00e9vision des distributions de pressions g\u00e9n\u00e9r\u00e9es par les articles de contention sur les membres humains inf\u00e9rieurs<\/em>, industrial collaboration with Sigvaris<\/strong>.<\/p>\n\n\n\n
\n
\"\"

Stocking pressure generated by for compression garments.<\/p><\/div><\/td>\n

\n
\"\"

measurements, and RIGHT predictions (Laplace’s law and Abaqus simulations) using bi-axial non-linear cosntitutive laws identified for the garment soft Diaphane 2\u00ae<\/p><\/div><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechanics of Materials and Instabilities<\/h3>\n

17. D. Al Akhrass, 27th <\/sup>January 2014, Robust numerical strategies to compute the response of energetic facilities undergoing severe loadings<\/em>, industrial\/governmental funding (EDF R&D), <\/strong>co-advisor Ass Prof. J. Bruchon, 2010-2013<\/p>\n

\"\"

Distribution with three-fileds mixed P2\/P1\/P1 elements of (a) the hydrostatic pressure at Gauss points and of (b) the Lagrangian multiplier p at nodes, for a scour in an inlet valve body<\/p><\/div>\n

2. L.L\u00e9otoing, November 2001 : Mod\u00e9lisation du flambage global, local et interactif dans les structures sandwich en compression<\/em>, supervision 80 % with Prof. A.Vautrin, ENSMSE.<\/p>\n

\"\"

Effect of the initial imperfection on the stability response of an elasto-plastic sandwich beam designed against interactive buckling, i.e. optimized configuration defined using analytically-based design-diagram. Abaqus FE code.<\/p><\/div>\n

1. L.Dufort, January 2000 : \u00c9tude exp\u00e9rimentale et th\u00e9orique du gauchissement des sections dans les poutres composites<\/em>, supervision 30 % (Prof. M. Gr\u00e9diac, LARAMA, Clermont-Ferrand, France).<\/p>\n

\"\"<\/p>\n

\"\"

Wrapping in composite and sandwich beams under 3-point bending. LEFT – shear strain distribution for a composite beam (a) analytical field fro higher-order theory and (b) contacless measurements, and RIGHT – displacement fields (a) longitudinal and (b) transverse, for a sandwich beam<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

Current Ph. D theses under my (co)-supervision – Model Order Reduction : 27. XXXXX, A contribution to the design of a \u2018Blended Wing Body\u2019 fuselage with carbon\/thermoplastic composites for regional electric propulsion aviation, industrial \/ governmental funding (EENUEE), co-directors Ass …<\/p>\n","protected":false},"author":164,"featured_media":0,"parent":2022,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":"","_links_to":"","_links_to_target":""},"tags":[],"class_list":["post-2029","page","type-page","status-publish","hentry"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","pp_force_visibility":null,"pp_subpost_visibility":null,"pp_inherited_force_visibility":null,"pp_inherited_subpost_visibility":null,"yoast_head":"\nResearch Topics - MINES Saint-\u00c9tienne<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mines-stetienne.fr\/en\/author\/drapier\/research-topics\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Research Topics - MINES Saint-\u00c9tienne\" \/>\n<meta property=\"og:description\" content=\"Current Ph. D theses under my (co)-supervision – Model Order Reduction : 27. XXXXX, A contribution to the design of a \u2018Blended Wing Body\u2019 fuselage with carbon\/thermoplastic composites for regional electric propulsion aviation, industrial \/ governmental funding (EENUEE), co-directors Ass …\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mines-stetienne.fr\/en\/author\/drapier\/research-topics\/\" \/>\n<meta property=\"og:site_name\" content=\"MINES Saint-\u00c9tienne\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/MinesSaintEtienne\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-02T06:42:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.mines-stetienne.fr\/en\/wp-content\/uploads\/sites\/4\/2022\/12\/AGeoffre-1.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@MINES_StEtienne\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.mines-stetienne.fr\\\/en\\\/author\\\/drapier\\\/research-topics\\\/\",\"url\":\"https:\\\/\\\/www.mines-stetienne.fr\\\/en\\\/author\\\/drapier\\\/research-topics\\\/\",\"name\":\"Research Topics - 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