2020 |
Workshops |
Sonia Djebali; Guillaume Guérard Prédiction des comportements touristiques par minage des motifs et des règles sequentielles Workshop 2020. BibTeX @workshop{Djebali2020,
title = {Prédiction des comportements touristiques par minage des motifs et des règles sequentielles},
author = {Sonia Djebali and Guillaume Guérard},
editor = {ROADEF2020. 21ème congrès annuel de la société Française de Recherche Opérationnelle et d'Aide à la Décision.},
year = {2020},
date = {2020-02-19},
keywords = {},
pubstate = {published},
tppubtype = {workshop}
}
|
Sonia Djebali; Guérard Guillaume Prédiction des comportements touristiques par minage des motifs et des règles sequentielles Workshop 2020. BibTeX @workshop{Djebali2020b,
title = {Prédiction des comportements touristiques par minage des motifs et des règles sequentielles},
author = {Sonia Djebali and Guérard Guillaume},
editor = {ROADEF2020. 21ème congrès annuel de la société Française de Recherche Opérationnelle et d'Aide à la Décision.},
year = {2020},
date = {2020-02-19},
keywords = {},
pubstate = {published},
tppubtype = {workshop}
}
|
Guillaume Guérard; Sonia Djebali Prédiction de la consommation par inférence grammaticale Workshop 2020. BibTeX @workshop{Guérard2020,
title = {Prédiction de la consommation par inférence grammaticale},
author = {Guillaume Guérard and Sonia Djebali},
editor = {ROADEF2020. 21ème congrès annuel de la société Française de Recherche Opérationnelle et d'Aide à la Décision.},
year = {2020},
date = {2020-02-19},
keywords = {},
pubstate = {published},
tppubtype = {workshop}
}
|
2019 |
inproceedings |
Lilia Ben Baccar; Sonia Djebali; Guillaume Guérard Tourist’s Tour Prediction by Sequential Data Mining Approach Inproceedings Dans: International Conference on Advanced Data Mining and Applications, p. 681–695, Springer 2019. BibTeX @inproceedings{baccar2019tourist,
title = {Tourist’s Tour Prediction by Sequential Data Mining Approach},
author = {Lilia Ben Baccar and Sonia Djebali and Guillaume Guérard},
year = {2019},
date = {2019-01-01},
booktitle = {International Conference on Advanced Data Mining and Applications},
pages = {681--695},
organization = {Springer},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Workshops |
Lilia BEN BACCAR; Sonia DJEBALI; Guillaume GUERARD Prédiction de circuits touristiques par fouille de données séquentielles Workshop Forthcoming Premier Symposium GDR MaDICS, Forthcoming. BibTeX @workshop{BACCAR2019,
title = {Prédiction de circuits touristiques par fouille de données séquentielles },
author = {Lilia BEN BACCAR and Sonia DJEBALI and Guillaume GUERARD},
editor = {MaDICS-Masses de Données, Informations et Connaissances en Sciences. Big Data - Data Science},
year = {2019},
date = {2019-06-26},
booktitle = {Premier Symposium GDR MaDICS},
keywords = {},
pubstate = {forthcoming},
tppubtype = {workshop}
}
|
Lilia Ben Baccar; Sonia Djebali; Guillaume Guérard Prédiction de circuits touristiques par fouille de données séquentielles Workshop 2019. BibTeX @workshop{Baccar2019b,
title = {Prédiction de circuits touristiques par fouille de données séquentielles},
author = {Lilia Ben Baccar and Sonia Djebali and Guillaume Guérard},
editor = {MaDICS
Masses de Données, Informations et Connaissances en Sciences
Big Data - Data Science},
year = {2019},
date = {2019-06-26},
keywords = {},
pubstate = {published},
tppubtype = {workshop}
}
|
Lilia Ben Baccar; Sonia Djebali; Guérard, Guillaume Prédiction de circuits touristiques par fouille de données séquentielles Workshop 2019. BibTeX @workshop{Baccar2019d,
title = {Prédiction de circuits touristiques par fouille de données séquentielles},
author = {Lilia Ben Baccar and Sonia Djebali and Guérard, Guillaume},
editor = {Premier Symposium GDR MaDICS, Masses de Données, Informations et Connaissances en Sciences},
year = {2019},
date = {2019-06-26},
keywords = {},
pubstate = {published},
tppubtype = {workshop}
}
|
2018 |
Articles de journaux |
Bruno Després, Rémy Sart Navier–Stokes Hierarchies of Reduced MHD Models in Tokamak Geometry Article de journal Dans: Journal of Mathematical Fluid Mechanics, 20 (2), p. 329-357, 2018. BibTeX @article{sart2017,
title = {Navier–Stokes Hierarchies of Reduced MHD Models in Tokamak Geometry},
author = {Bruno Després, Rémy Sart},
year = {2018},
date = {2018-06-01},
journal = {Journal of Mathematical Fluid Mechanics},
volume = {20},
number = {2},
pages = {329-357},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2017 |
Articles de journaux |
Y. Amirat; K. Hamdache Stationary solutions of a heated magnetic fluid model Article de journal Forthcoming Dans: Applicable Analysis, Forthcoming. BibTeX @article{hamdadche2017,
title = {Stationary solutions of a heated magnetic fluid model},
author = {Y. Amirat and K. Hamdache},
year = {2017},
date = {2017-12-30},
journal = {Applicable Analysis},
keywords = {},
pubstate = {forthcoming},
tppubtype = {article}
}
|
Achraf Kallel L'impression 3D : Mythes et Réalités Article de journal Dans: CAD Magazine, mai/Juin, 2017. BibTeX @article{Kallel2017c,
title = {L'impression 3D : Mythes et Réalités },
author = {Achraf Kallel},
year = {2017},
date = {2017-12-30},
journal = {CAD Magazine, mai/Juin},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Guillaume Guérard Bâtiments intelligents : des méthodes en pleine évolution Article de journal Dans: BIM World, 2017. BibTeX @article{guerard2017e,
title = {Bâtiments intelligents : des méthodes en pleine évolution },
author = {Guillaume Guérard},
year = {2017},
date = {2017-11-10},
journal = {BIM World},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Guillaume Guérard La question du changement climatique est devenue un problème mondial Article de journal Dans: Grand Angle de la CGE., 2017. BibTeX @article{guerard2017g,
title = {La question du changement climatique est devenue un problème mondial},
author = {Guillaume Guérard},
year = {2017},
date = {2017-11-10},
journal = {Grand Angle de la CGE.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
T. Dufour; H.M. Hoang; J. Oignet; V. Osswald; P. Clain; L. Fournaison; A. Delahaye Impact of pressure on the dynamic behavior of CO2 hydrate slurry in a stirred tank reactor applied to cold thermal energy storage Article de journal Dans: Applied Energy, 204 , p. 641-652, 2017. BibTeX @article{clain2017a,
title = {Impact of pressure on the dynamic behavior of CO2 hydrate slurry in a stirred tank reactor applied to cold thermal energy storage},
author = {T. Dufour and H.M. Hoang and J. Oignet and V. Osswald and P. Clain and L. Fournaison and A. Delahaye},
year = {2017},
date = {2017-10-15},
journal = {Applied Energy},
volume = {204},
pages = {641-652},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Guillaume Guérard La méthode BIM, un atout pour construire plus écolo Article de journal Dans: The Conversation et Fréquence Terre., 2017. BibTeX @article{Guérard2017db,
title = {La méthode BIM, un atout pour construire plus écolo },
author = {Guillaume Guérard},
year = {2017},
date = {2017-06-14},
journal = {The Conversation et Fréquence Terre.},
organization = {The Conversation et Fréquence Terre.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
J; Oignet; A. Delahaye; J.-P.Torré; C. Dicharry; H.M. Hoang; P. Clainand; V. Osswald; Z. Youssef; L. Fournaison Rheological study of CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate in a secondary refrigeration loop Article de journal Dans: Chemical Engineering Science, 158 , p. 294-303, 2017. BibTeX @article{clain2017b,
title = {Rheological study of CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate in a secondary refrigeration loop},
author = {J; Oignet and A. Delahaye and J.-P.Torré and C. Dicharry and H.M. Hoang and P. Clainand and V. Osswald and Z. Youssef and L. Fournaison},
year = {2017},
date = {2017-06-14},
journal = {Chemical Engineering Science},
volume = {158},
pages = {294-303},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Achraf Kallel Digitalisation, autonomie, développement durable : l'horizon du secteur automobile ne cesse de s'élargir et de proposer de nouvelles carrières passionnantes Article de journal Dans: Le Parisien ECO, mars , 2017. BibTeX @article{Kallel2017a,
title = {Digitalisation, autonomie, développement durable : l'horizon du secteur automobile ne cesse de s'élargir et de proposer de nouvelles carrières passionnantes },
author = {Achraf Kallel},
year = {2017},
date = {2017-03-15},
journal = {Le Parisien ECO, mars },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Conférences |
Osswald V.; Boufares A.; Clain P.; Provost E.; Dalmazzone D.; Delahaye A.; Fournaison L. Etude expérimentale de la cinétique de cristallisation des hydrates deCO2 en présence ou non d’additif chimique 5500 - 5599 Conférence 16th Congrès de la Société Française de Génie des Procédés, Nancy, 2017. BibTeX @conference{clain2017g,
title = {Etude expérimentale de la cinétique de cristallisation des hydrates deCO2 en présence ou non d’additif chimique},
author = {Osswald V. and Boufares A. and Clain P. and Provost E. and Dalmazzone D. and Delahaye A. and Fournaison L. },
year = {2017},
date = {2017-11-10},
booktitle = {16th Congrès de la Société Française de Génie des Procédés, Nancy},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Boufares, A.; Provost, E.; Osswald, V.; Clain, P.; Delahaye, A.; Fournaison, L.; Dalmazzone, D. Détermination de la concentration du CO2 moléculaire en phase aqueuse par spectroscopie infrarouge : application à la cristallisation des hydrates de CO2 5500 - 5599 Conférence SFGP, Nancy, France, 11-13 juillet, 2017. BibTeX @conference{clain2017d,
title = {Détermination de la concentration du CO2 moléculaire en phase aqueuse par spectroscopie infrarouge : application à la cristallisation des hydrates de CO2},
author = {Boufares, A. and Provost, E. and Osswald, V. and Clain, P. and Delahaye, A. and Fournaison, L. and Dalmazzone, D. },
year = {2017},
date = {2017-07-15},
booktitle = {SFGP, Nancy, France, 11-13 juillet},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
Guérard, G.; Djebali, S. Rendre 'intelligent' le Smart Grid 5500 - 5599 Conférence ROADEF 2017, Metz, 22-24 février, 2017. BibTeX @conference{djebali2017,
title = {Rendre 'intelligent' le Smart Grid },
author = {Guérard, G. and Djebali, S. },
year = {2017},
date = {2017-02-15},
booktitle = {ROADEF 2017, Metz, 22-24 février},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
inproceedings |
Boufares, A.; Provost, E.; Osswald, V.; Clain, P.; Delahaye, A.; Fournaison, L.; Dalmazzone, D. Effect of additives on the kinetic study of CO2 hydrates during crystallization for secondary refrigeration applications using FTIR/ATR spectroscopy Inproceedings Dans: ICGH9, Denver, Colorado, USA, 25-30 juin, 2017. BibTeX @inproceedings{clain2017c,
title = {Effect of additives on the kinetic study of CO2 hydrates during crystallization for secondary refrigeration applications using FTIR/ATR spectroscopy},
author = {Boufares, A. and Provost, E. and Osswald, V. and Clain, P. and Delahaye, A. and Fournaison, L. and Dalmazzone, D. },
year = {2017},
date = {2017-06-14},
booktitle = {ICGH9, Denver, Colorado, USA, 25-30 juin},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Osswald, V.; Clain, P.; Boufares, A.; Dalmazzone, D.; Delahaye, A.; Fournaison, L. Impact of chemical additives on CO2 hydrate formation kinetics in a stirred tank reactor Inproceedings Dans: ICGH9, Denver, Colorado, USA, 25-30 juin, 2017. BibTeX @inproceedings{clain2017f,
title = {Impact of chemical additives on CO2 hydrate formation kinetics in a stirred tank reactor},
author = {Osswald, V. and Clain, P. and Boufares, A. and Dalmazzone, D. and Delahaye, A. and Fournaison, L. },
year = {2017},
date = {2017-06-14},
booktitle = {ICGH9, Denver, Colorado, USA, 25-30 juin},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Guérard, G.; Nehai, Z Integration of the Blockchain in a Smart Grid Model Inproceedings Dans: CYSENI, Kaunas, Lithuania, 25-26 Mai., 2017. BibTeX @inproceedings{guerard2017i,
title = {Integration of the Blockchain in a Smart Grid Model},
author = {Guérard, G. and Nehai, Z},
year = {2017},
date = {2017-05-15},
booktitle = {CYSENI, Kaunas, Lithuania, 25-26 Mai.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Guérard, G.; Cathelineau, E.; Levy, L. From raw data to a digital model Inproceedings Dans: CYSENI, Kaunas, Lithuania, 25-26 Mai., 2017. BibTeX @inproceedings{guerard2017j,
title = {From raw data to a digital model},
author = {Guérard, G. and Cathelineau, E. and Levy, L. },
year = {2017},
date = {2017-05-15},
booktitle = {CYSENI, Kaunas, Lithuania, 25-26 Mai.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Pichon, B.; Clain,P and, Hoang, H.M and, Dufour, T.; Delahaye, A.; Fournaison, L. Review of Thermal Energy Storage technologies integration in Smart-Grid Inproceedings Dans: CYSENI, Kaunas, Lithuania, 25-26 mai, 2017. BibTeX @inproceedings{clain2017h,
title = {Review of Thermal Energy Storage technologies integration in Smart-Grid},
author = {Pichon, B. and Clain,P and, Hoang, H.M and, Dufour, T. and Delahaye, A. and Fournaison, L. },
year = {2017},
date = {2017-05-15},
booktitle = {CYSENI, Kaunas, Lithuania, 25-26 mai},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Salehy, Y.; Clain, P.; Boufares, A.; Osswald, V.; Delahaye, A.; Fournaison, L. Rheological study on CO2 hydrate slurries Inproceedings Dans: CYSENI, Kaunas, Lithuania, 25-26 mai, 2017. BibTeX @inproceedings{clain2017i,
title = {Rheological study on CO2 hydrate slurries},
author = {Salehy, Y. and Clain, P. and Boufares, A. and Osswald, V. and Delahaye, A. and Fournaison, L. },
year = {2017},
date = {2017-05-15},
booktitle = {CYSENI, Kaunas, Lithuania, 25-26 mai},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Guérard, G.; Pichon, B.; Nehai, Z. Demand-Response: let the devices take our decisions Inproceedings Dans: SmartGreens 2017, Porto, Portugal, 22-24 avril, 2017. BibTeX @inproceedings{guerard2017h,
title = {Demand-Response: let the devices take our decisions},
author = {Guérard, G. and Pichon, B. and Nehai, Z. },
year = {2017},
date = {2017-04-01},
booktitle = {SmartGreens 2017, Porto, Portugal, 22-24 avril},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
A. Ben Abdallah; A. Kallel,; F. Fehmi Gamaoun Shape Memory Property and Driving Force of the shape Memory Blend (40%PCL / 60%SBS) Inproceedings Dans: 7th International Congress Design and Modelling of Mechanical Systems), Hammamet, Tunisia, 27-29 mars , 2017. BibTeX @inproceedings{Kallel2017d,
title = {Shape Memory Property and Driving Force of the shape Memory Blend (40%PCL / 60%SBS)},
author = {A. Ben Abdallah and A. Kallel, and F. Fehmi Gamaoun },
year = {2017},
date = {2017-03-15},
booktitle = {7th International Congress Design and Modelling of Mechanical Systems), Hammamet, Tunisia, 27-29 mars },
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Tristan Fautrel; Laurent George; Frédéric Fauberteau A hypervisor schedulability analysis for safety and security critical applications scheduled in arbitrary patterns of slots Inproceedings Dans: Proceeding of the 11th Junior Researcher Workshop on Real-Time Computing (JRWRTC), 2017. Résumé | BibTeX @inproceedings{Fautrel2017,
title = {A hypervisor schedulability analysis for safety and security critical applications scheduled in arbitrary patterns of slots},
author = {Tristan Fautrel and Laurent George and Frédéric Fauberteau},
year = {2017},
date = {2017-00-00},
booktitle = {Proceeding of the 11th Junior Researcher Workshop on Real-Time Computing (JRWRTC)},
abstract = {This paper focuses on the problem of scheduling several applications on top of a hypervisor. The hypervisor is in charge of satisfying safety and security constraints enforced by space and temporal isolation. An application is run by one processor of a multiprocessor platform in dedicated slots composing a pattern. One processor can run several applications each assigned to a dedicated pattern of slots. A hypervisor distributes the time resource among several Virtual Machines (VMs) on a multiprocessor architecture. Each VM embeds an application consisting of a set of sporadic real-time tasks. These tasks are scheduled according to a preemptive Fixed-Task-Priority (FTP) policy in the slots assigned to their application. A task can be executed by one or several slots and a slot can execute several tasks. First, we derive an exact schedulability condition using response time analysis for sporadic tasks scheduled in a periodic arbitrary pattern of slots. Then, we investigate several pattern constructions derived from the scheduling of tasks with classical schedulings like Round Robin (RR), Weighted Fair Queuing (WFQ), Rate Monotonic (RM) and Earliest Deadline First (EDF). Finally, we compare by simulation the success ratios of several constructions of slot patterns.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
This paper focuses on the problem of scheduling several applications on top of a hypervisor. The hypervisor is in charge of satisfying safety and security constraints enforced by space and temporal isolation. An application is run by one processor of a multiprocessor platform in dedicated slots composing a pattern. One processor can run several applications each assigned to a dedicated pattern of slots. A hypervisor distributes the time resource among several Virtual Machines (VMs) on a multiprocessor architecture. Each VM embeds an application consisting of a set of sporadic real-time tasks. These tasks are scheduled according to a preemptive Fixed-Task-Priority (FTP) policy in the slots assigned to their application. A task can be executed by one or several slots and a slot can execute several tasks. First, we derive an exact schedulability condition using response time analysis for sporadic tasks scheduled in a periodic arbitrary pattern of slots. Then, we investigate several pattern constructions derived from the scheduling of tasks with classical schedulings like Round Robin (RR), Weighted Fair Queuing (WFQ), Rate Monotonic (RM) and Earliest Deadline First (EDF). Finally, we compare by simulation the success ratios of several constructions of slot patterns. |
2016 |
Articles de journaux |
Jérémy Oignet; Anthony Delahaye; Jean-Philippe Torré; Christophe Dicharry; Hong Minh Hoang; Pascal Clain; Véronique Osswald; Ziad Youssef; Laurence Fournaison Rheological study of CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate in a secondary refrigeration loop Article de journal Dans: Chemical Engineering Science, 158 , p. 294 - 303, 2016. Résumé | Liens | BibTeX @article{Oignet2017294,
title = {Rheological study of CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate in a secondary refrigeration loop},
author = {Jérémy Oignet and Anthony Delahaye and Jean-Philippe Torré and Christophe Dicharry and Hong Minh Hoang and Pascal Clain and Véronique Osswald and Ziad Youssef and Laurence Fournaison},
url = {http://www.sciencedirect.com/science/article/pii/S0009250916305486},
doi = {http://dx.doi.org/10.1016/j.ces.2016.10.018},
year = {2016},
date = {2016-12-13},
journal = {Chemical Engineering Science},
volume = {158},
pages = {294 - 303},
abstract = {Abstract Secondary refrigeration and thermal energy storage are promising solutions to enhance the performance of refrigeration systems and reduce the impact of refrigerants on the environment. To improve the energy efficiency of secondary refrigeration loops, phase change material (PCM) slurries with a high energy density, such as CO2 hydrate slurries, can be used as a secondary refrigerant. In addition, hydrate-based processes could be an innovative option to capture CO2 from flue gas. In both applications, the rheological properties of the CO2 hydrate slurry have to be controlled. In the present study, CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate (SDS) was studied in a dynamic flow loop. The results show that SDS used at concentrations of 1500–2000 ppm significantly decreases agglomeration and improves the flow properties of the slurry. Moreover, SDS helps decrease the viscosity of the CO2-hydrate slurry at high fraction (>10 vol%) and therefore could be suitable for use in industrial applications such as secondary refrigeration, in which hydrate slurries must be easy to handle.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Abstract Secondary refrigeration and thermal energy storage are promising solutions to enhance the performance of refrigeration systems and reduce the impact of refrigerants on the environment. To improve the energy efficiency of secondary refrigeration loops, phase change material (PCM) slurries with a high energy density, such as CO2 hydrate slurries, can be used as a secondary refrigerant. In addition, hydrate-based processes could be an innovative option to capture CO2 from flue gas. In both applications, the rheological properties of the CO2 hydrate slurry have to be controlled. In the present study, CO2 hydrate slurry in the presence of Sodium Dodecyl Sulfate (SDS) was studied in a dynamic flow loop. The results show that SDS used at concentrations of 1500–2000 ppm significantly decreases agglomeration and improves the flow properties of the slurry. Moreover, SDS helps decrease the viscosity of the CO2-hydrate slurry at high fraction (>10 vol%) and therefore could be suitable for use in industrial applications such as secondary refrigeration, in which hydrate slurries must be easy to handle. |
Guérard, Guillaume Demain, tous producteurs d'électricité ? Article de journal Dans: The conversation, on line, 2016. BibTeX @article{Guerard1,
title = {Demain, tous producteurs d'électricité ? },
author = {Guérard, Guillaume},
year = {2016},
date = {2016-09-14},
journal = {The conversation, on line},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Guérard, Guillaume Par quoi passe l'efficacité énergétique ? Article de journal Dans: The conversation, on line, 2016. BibTeX @article{Guerard2,
title = {Par quoi passe l'efficacité énergétique ? },
author = {Guérard, Guillaume},
year = {2016},
date = {2016-06-17},
journal = {The conversation, on line},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Kamel Hamdache; Djemila Hamroun; Asma Louardani Global weak solutions to a model of micropolar fluids with maxwell-cattaneo heat transfer law. Nonlinear Analysis Article de journal Dans: Nonlinear Analysis, (142), p. 69-96, 2016. Résumé | BibTeX @article{HamdacheHamrounLouardani,
title = {Global weak solutions to a model of micropolar fluids with maxwell-cattaneo heat transfer law. Nonlinear Analysis},
author = {Kamel Hamdache and Djemila Hamroun and Asma Louardani},
year = {2016},
date = {2016-06-16},
journal = {Nonlinear Analysis},
number = {142},
pages = {69-96},
abstract = {This work is devoted to the study of a system describing the dynamics of a heated
micropolar fluid under the action of an applied magnetic field. The heat transfer
is subjected to Maxwell–Cattaneo law instead of the usual Fourier law. Thanks
to regularization and compactness methods the global existence in time of weak
solutions with finite energy has been proved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This work is devoted to the study of a system describing the dynamics of a heated
micropolar fluid under the action of an applied magnetic field. The heat transfer
is subjected to Maxwell–Cattaneo law instead of the usual Fourier law. Thanks
to regularization and compactness methods the global existence in time of weak
solutions with finite energy has been proved. |
Olivier Hubert; Frédérick Mballa-Mballa; Song He; Sophie Depeyre Influence of Biaxial Stress on Magnetic Behavior of Dual-Phase Steel --- Experiments and Modeling Article de journal Dans: IEEE Transactions on Magnetics, 52 (5), 2016, ISSN: 0018-9464 . Résumé | Liens | BibTeX @article{IEEE2016,
title = {Influence of Biaxial Stress on Magnetic Behavior of Dual-Phase Steel --- Experiments and Modeling},
author = {Olivier Hubert and Frédérick Mballa-Mballa and Song He and Sophie Depeyre},
doi = {10.1109/TMAG.2015.2511169 },
issn = {0018-9464 },
year = {2016},
date = {2016-01-05},
journal = {IEEE Transactions on Magnetics},
volume = {52},
number = {5},
abstract = {Online magnetic NDE of dual-phase (DP) steels is made on bands submitted to high multiaxial stress. Extraction of microstructural information from the measurement requires separating the effect of stress and microstructure. Coupled magnetomechanical micromagnetic modeling is relevant for that purpose. In this paper, the magnetic behavior of a DP steel under biaxial stress is carried out and compared with the modeling. It is shown that the discrepancies observed between experiments and model can be explained by the 2-D assumption. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Online magnetic NDE of dual-phase (DP) steels is made on bands submitted to high multiaxial stress. Extraction of microstructural information from the measurement requires separating the effect of stress and microstructure. Coupled magnetomechanical micromagnetic modeling is relevant for that purpose. In this paper, the magnetic behavior of a DP steel under biaxial stress is carried out and compared with the modeling. It is shown that the discrepancies observed between experiments and model can be explained by the 2-D assumption. |
Kamel Hamdache; Djamila Hamroun Global existence and long time behavior of solutions to a model of ferroelectric materials Article de journal Dans: Journal of Mathematical Analysis and Applications., 438 , p. 668-700, 2016. Liens | BibTeX @article{Hamdache2016,
title = {Global existence and long time behavior of solutions to a model of ferroelectric materials},
author = {Kamel Hamdache and Djamila Hamroun},
editor = {Elsevier},
doi = {10.1016/j.jmaa.2016.01.074},
year = {2016},
date = {2016-01-01},
journal = {Journal of Mathematical Analysis and Applications.},
volume = {438},
pages = {668-700},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Tognevi Amen; Guerich Mohamed; Yvonnet Julien A multi-scale modeling method for heterogeneous structures without scale separation using a filter-based homogenization scheme Article de journal Dans: International Journal for Numerical Methods in Engineering, p. n/a–n/a, 2016, ISSN: 1097-0207. Résumé | Liens | BibTeX @article{NME:NME5200,
title = {A multi-scale modeling method for heterogeneous structures without scale separation using a filter-based homogenization scheme},
author = {Tognevi Amen and Guerich Mohamed and Yvonnet Julien},
url = {http://dx.doi.org/10.1002/nme.5200},
doi = {10.1002/nme.5200},
issn = {1097-0207},
year = {2016},
date = {2016-01-01},
journal = {International Journal for Numerical Methods in Engineering},
pages = {n/a--n/a},
abstract = {A method is proposed to compute the response of highly heterogeneous structures by constructing homogenized models when no scale separation can be assumed. The technique is based on an extended homogenization scheme where the averaging operators are replaced by linear filters to cut off fine scale fluctuations, while maintaining locally varying mechanical fields with larger wavelength. As a result, the constitutive law at an intermediate scale, called mesoscale, arises to be naturally nonlocal by construction, where the kernel operator is fully constructed by computations on the unit cell associated with the microstructure. A displacement-based numerical strategy is developed to implement the technique in a classical finite element framework and does not require higher-order elements. The methodology is applied to construct simplified models of heterogeneous structures subjected to loads, which have a characteristic wavelength comparable with the dimensions of the heterogeneities or in presence of strong strain localization as in cracked heterogeneous structures. Copyright © 2016 John Wiley & Sons, Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A method is proposed to compute the response of highly heterogeneous structures by constructing homogenized models when no scale separation can be assumed. The technique is based on an extended homogenization scheme where the averaging operators are replaced by linear filters to cut off fine scale fluctuations, while maintaining locally varying mechanical fields with larger wavelength. As a result, the constitutive law at an intermediate scale, called mesoscale, arises to be naturally nonlocal by construction, where the kernel operator is fully constructed by computations on the unit cell associated with the microstructure. A displacement-based numerical strategy is developed to implement the technique in a classical finite element framework and does not require higher-order elements. The methodology is applied to construct simplified models of heterogeneous structures subjected to loads, which have a characteristic wavelength comparable with the dimensions of the heterogeneities or in presence of strong strain localization as in cracked heterogeneous structures. Copyright © 2016 John Wiley & Sons, Ltd. |
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet Determining the Size of RVE for Nonlinear Random Composites in an Incremental Computational Homogenization Framework Article de journal Dans: Journal of Engineering Mechanics, 142 (5), p. 04016018, 2016. Liens | BibTeX @article{doi:10.1061/(ASCE)EM.1943-7889.0001057,
title = {Determining the Size of RVE for Nonlinear Random Composites in an Incremental Computational Homogenization Framework},
author = {Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {http://dx.doi.org/10.1061/(ASCE)EM.1943-7889.0001057},
doi = {10.1061/(ASCE)EM.1943-7889.0001057},
year = {2016},
date = {2016-01-01},
journal = {Journal of Engineering Mechanics},
volume = {142},
number = {5},
pages = {04016018},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Conférences |
Achraf Kallel, Menad Lamraoui, Joseph Fitoussi AND Abbas Tcharkhtchi The residual stress effect on the Shape Memory Polymers 5500 - 5599 Conférence ICRS-10, 2016. Résumé | BibTeX @conference{ICRS-10,
title = {The residual stress effect on the Shape Memory Polymers },
author = {Achraf Kallel, Menad Lamraoui, Joseph Fitoussi AND Abbas Tcharkhtchi},
editor = {10 th International Conference on Residual Stresses, Sydney, Australia},
year = {2016},
date = {2016-07-01},
booktitle = {ICRS-10},
abstract = {The current paper presents an experimental study of the residual stress role to recover polymer blend to its original position after deformation. A mixture of 40% PolyCaproLactone (PCL) and 60% Styrene-Butadiene-Styrene (SBS) is used for our study. The Shape Memory Polymer (SMP) is able to storing a permanent macroscopic after passing through a temporary one; then under an external stimulus; they can recover their initial shapes. The recovery rate depends not only on the mechanical property of the mixture, but also the number of the loading cycles. Indeed, one multiplying the number of mechanical loading cycle; generally tensile test; the recovery rate does not change in a linear manner and therefore the residual stress is not added in integer from one cycle to another.
In this work we studied the mechanism of the shape as well as properties memory effect of the blend under study during a shape memory cycle, to establish a relationship between the “shape memory effect” and the “properties memory effect”. Finally, we measure the “Driving Force” responsible for the shape memory effect by an original method. This study allows establishing a relationship between the rate of recovery and residual stresses introduced into the polymer during its deformation.
},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The current paper presents an experimental study of the residual stress role to recover polymer blend to its original position after deformation. A mixture of 40% PolyCaproLactone (PCL) and 60% Styrene-Butadiene-Styrene (SBS) is used for our study. The Shape Memory Polymer (SMP) is able to storing a permanent macroscopic after passing through a temporary one; then under an external stimulus; they can recover their initial shapes. The recovery rate depends not only on the mechanical property of the mixture, but also the number of the loading cycles. Indeed, one multiplying the number of mechanical loading cycle; generally tensile test; the recovery rate does not change in a linear manner and therefore the residual stress is not added in integer from one cycle to another.
In this work we studied the mechanism of the shape as well as properties memory effect of the blend under study during a shape memory cycle, to establish a relationship between the “shape memory effect” and the “properties memory effect”. Finally, we measure the “Driving Force” responsible for the shape memory effect by an original method. This study allows establishing a relationship between the rate of recovery and residual stresses introduced into the polymer during its deformation.
|
Kamel Hamdache; A. Gaudellio Ferroelectric thin structures. 5500 - 5599 Conférence New Trends in Differential Equations, Control Theory and Optimisation. Edt. V. Barby, C. Lefter, I. Vrabie. World Scientific (2016) 121-127, 2016. BibTeX @conference{HamdacheGauconf2016,
title = {Ferroelectric thin structures.},
author = {Kamel Hamdache and A. Gaudellio},
year = {2016},
date = {2016-03-09},
booktitle = {New Trends in Differential Equations, Control Theory and Optimisation. Edt. V. Barby, C. Lefter, I. Vrabie. World Scientific (2016) 121-127},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
inproceedings |
Hoang T.H.; Guerich M.; Yvonnet J. A Numerical Incremental Homogenization Approach to Calculate Elastoplastic Heterogeneous Structures Inproceedings Dans: European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), Crète, 2016. BibTeX @inproceedings{Guerichconf2016,
title = {A Numerical Incremental Homogenization Approach to Calculate Elastoplastic Heterogeneous Structures},
author = {Hoang T.H. and Guerich M. and Yvonnet J. },
year = {2016},
date = {2016-06-06},
booktitle = {European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), Crète},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Tognevi A.; Guerich M.; Yvonnet J. A multi-scale modeling method for heterogeneous structures without scale separation using a filterbased homogenization scheme Inproceedings Dans: European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), June 5-10, 2016, Crète, Grèce., 2016. BibTeX @inproceedings{Guerichconf22016,
title = {A multi-scale modeling method for heterogeneous structures without scale separation using a filterbased homogenization scheme},
author = {Tognevi A. and Guerich M. and Yvonnet J. },
year = {2016},
date = {2016-06-06},
booktitle = {European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016), June 5-10, 2016, Crète, Grèce.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
la proc |
Kamel Hamdache; Djamila Hamroun; Fatah Aggoune Transfert de chaleur dans un fluide magnétique avec la loi de Maxwell-Cattaneo non linéaire.Équations aux dérivées partielles et leurs applications. procédure FNM Fédération Normandie Mathématiques Actes du colloque Edp-Normandie Le Havre 2015, Le Havre, 2016. BibTeX @proceedings{Hamdache2016b,
title = {Transfert de chaleur dans un fluide magnétique avec la loi de Maxwell-Cattaneo non linéaire.Équations aux dérivées partielles et leurs applications.},
author = {Kamel Hamdache and Djamila Hamroun and Fatah Aggoune},
year = {2016},
date = {2016-01-01},
publisher = {Actes du colloque Edp-Normandie Le Havre 2015},
address = {Le Havre},
organization = {FNM Fédération Normandie Mathématiques},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
|
2015 |
Articles de journaux |
Pascal Clain; Fatou-Toutie Ndoye; Anthony Delahaye; Laurence Fournaison; Wei Lin; Didier Dalmazzone Particle size distribution of TBPB hydrates by focused beam reflectance measurement (FBRM) for secondary refrigeration application Article de journal Dans: International Journal of Refrigeration, 50 , p. 19-31, 2015. Résumé | Liens | BibTeX @article{CNDFLD14,
title = {Particle size distribution of TBPB hydrates by focused beam reflectance measurement (FBRM) for secondary refrigeration application},
author = { Pascal Clain and Fatou-Toutie Ndoye and Anthony Delahaye and Laurence Fournaison and Wei Lin and Didier Dalmazzone},
url = {http://labs.esilv.fr/publications/public/2014/CNDFLD14},
year = {2015},
date = {2015-01-01},
journal = {International Journal of Refrigeration},
volume = {50},
pages = {19-31},
abstract = {The present work investigates TBPB(tetra-n-butylphosphonium bromide) hydrate slurries based on focused beam reflectance measurement (FBRM) method. Hydrates can be used as phase change materials (PCM) for thermal energy storage due to their high latent heat of melting. In this study, hydrates were formed from TBPB-water mixtures, suitable for air-conditioning applications. Moreover, hydrate slurries, composed of hydrate-particles dispersed in liquid, are appropriate solutions for cold distribution. Nevertheless, flow properties of hydrate slurries, depending on hydrate crystallization kinetics, must be controlled. In this work, FBRM was used for analysing TBPB-hydrate-particle size distribution. This work showed that FBRM can detect system phase changes (nucleation, growth, agglomeration). In addition, a bimodal distribution of particles was observed. This work could be useful to understand rheological behaviour of hydrate slurry, not only for secondary refrigeration applications, but also for natural gas hydrate transportation, pipeline plugging prevention, and gas capture.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The present work investigates TBPB(tetra-n-butylphosphonium bromide) hydrate slurries based on focused beam reflectance measurement (FBRM) method. Hydrates can be used as phase change materials (PCM) for thermal energy storage due to their high latent heat of melting. In this study, hydrates were formed from TBPB-water mixtures, suitable for air-conditioning applications. Moreover, hydrate slurries, composed of hydrate-particles dispersed in liquid, are appropriate solutions for cold distribution. Nevertheless, flow properties of hydrate slurries, depending on hydrate crystallization kinetics, must be controlled. In this work, FBRM was used for analysing TBPB-hydrate-particle size distribution. This work showed that FBRM can detect system phase changes (nucleation, growth, agglomeration). In addition, a bimodal distribution of particles was observed. This work could be useful to understand rheological behaviour of hydrate slurry, not only for secondary refrigeration applications, but also for natural gas hydrate transportation, pipeline plugging prevention, and gas capture. |
Radoin Belaouar; Anne de Bouard; Arnaud Debussche Numerical analysis of the nonlinear Schrödinger equation with white noise dispersion Article de journal Dans: Stochastic Partial Differential Equations: Analysis and Computations, 3 (1), p. 103-132, 2015, ISSN: 2194-0401. Résumé | Liens | BibTeX @article{rad,
title = {Numerical analysis of the nonlinear Schrödinger equation with white noise dispersion},
author = { Radoin Belaouar and Anne de Bouard and Arnaud Debussche},
url = {http://dx.doi.org/10.1007/s40072-015-0044-z},
doi = {10.1007/s40072-015-0044-z},
issn = {2194-0401},
year = {2015},
date = {2015-01-01},
journal = {Stochastic Partial Differential Equations: Analysis and Computations},
volume = {3},
number = {1},
pages = {103-132},
publisher = {Springer US},
abstract = {This article is devoted to the numerical study of a nonlinear Schrödinger equation in which the coefficient in front of the group velocity dispersion is multiplied by a real valued Gaussian white noise. We first perform the numerical analysis of a semi-discrete Crank-Nicolson scheme in the case when the continuous equation possesses a unique global solution. We prove that the strong order of convergence in probability is equal to one in this case. In a second step, we numerically investigate, in space dimension one, the behavior of the solutions of the equation for different power nonlinearities, corresponding to subcritical, critical or supercritical nonlinearities in the deterministic case. Numerical evidence of a change in the critical power due to the presence of the noise is pointed out.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This article is devoted to the numerical study of a nonlinear Schrödinger equation in which the coefficient in front of the group velocity dispersion is multiplied by a real valued Gaussian white noise. We first perform the numerical analysis of a semi-discrete Crank-Nicolson scheme in the case when the continuous equation possesses a unique global solution. We prove that the strong order of convergence in probability is equal to one in this case. In a second step, we numerically investigate, in space dimension one, the behavior of the solutions of the equation for different power nonlinearities, corresponding to subcritical, critical or supercritical nonlinearities in the deterministic case. Numerical evidence of a change in the critical power due to the presence of the noise is pointed out. |
Antonio Gaudiello; Kamel Hamdache A reduced model for the polarization in a ferroelectric thin wire Article de journal Dans: Nonlinear Differential Equations and Applications NoDEA, 22 (6,22), p. 1883-1896, 2015. BibTeX @article{Gaudiello2015,
title = {A reduced model for the polarization in a ferroelectric thin wire},
author = {Antonio Gaudiello and Kamel Hamdache},
year = {2015},
date = {2015-01-01},
journal = {Nonlinear Differential Equations and Applications NoDEA},
volume = {22},
number = {6,22},
pages = {1883-1896},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Conférences |
Bassem Benlazreg; Achraf Kallel; Alexis Massol Optimized design for 3D printing 5500 - 5599 Conférence The 8th European Altair Technology Conference, ATC2015, October1, Paris, France, 2015. BibTeX @conference{ATC2015,
title = {Optimized design for 3D printing},
author = {Bassem Benlazreg and Achraf Kallel and Alexis Massol},
year = {2015},
date = {2015-10-01},
booktitle = {The 8th European Altair Technology Conference, ATC2015, October1, Paris, France},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
|
inproceedings |
Jérémy Oignet; Anthony Delahaye; Thomas Dufour; Hong-Minh Hoang; Pascal Clain; Laurence Fournaison Energy study of CO2 hydrate slurries formation in a tank reactor Inproceedings Dans: 24rd IIR International Congress of Refrigeration (ICR 2015), Aug 16-22 Yokohama, Japan, 2015. BibTeX @inproceedings{Oignet2015,
title = {Energy study of CO2 hydrate slurries formation in a tank reactor},
author = {Jérémy Oignet and Anthony Delahaye and Thomas Dufour and Hong-Minh Hoang and Pascal Clain and Laurence Fournaison},
year = {2015},
date = {2015-08-16},
booktitle = {24rd IIR International Congress of Refrigeration (ICR 2015)},
address = {Yokohama, Japan},
organization = {Aug 16-22},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Pascal Clain; Véronique Osswald; Olivier Spiga; Anthony Delahaye; Laurence Fournaison A new formation kinetics study method of TBPB and CO2 hydrates based on DTA Inproceedings Dans: 24rd IIR International Congress of Refrigeration (ICR 2015), Aug 16-22 Yokohama, Japan, 2015. BibTeX @inproceedings{Clain2015,
title = {A new formation kinetics study method of TBPB and CO2 hydrates based on DTA},
author = {Pascal Clain and Véronique Osswald and Olivier Spiga and Anthony Delahaye and Laurence Fournaison},
year = {2015},
date = {2015-08-16},
booktitle = {24rd IIR International Congress of Refrigeration (ICR 2015)},
address = {Yokohama, Japan},
organization = {Aug 16-22},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet Effective size of RVE for finite element analysis of structures made of nonlinear random composites Inproceedings Dans: 18th International Conference on Composite Structures (ICCS18), Lisbonne, Portugal, 2015. Résumé | Liens | BibTeX @inproceedings{hoang:hal-01166513,
title = {Effective size of RVE for finite element analysis of structures made of nonlinear random composites},
author = { Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166513},
year = {2015},
date = {2015-06-01},
booktitle = {18th International Conference on Composite Structures (ICCS18)},
address = {Lisbonne, Portugal},
abstract = {In the present work, we propose to determine the size of a representative volume element (RVE) in the case of nonlinear random composites with either elastoplastic or elasto viscoplastic phases. In such a case, the general form of the effective constitutive behavior is not known in advance and the response must be evaluated either by direct numerical computations on the RVE, either by an appropriate approximation scheme. Previous methodologies [1,2] for determining the size of RVE usually rely on analyzing the convergence of the RVE response computed numerically with respect to its size. In the present work, we analyze the convergence of parameters related to an incremental homogenization scheme, with respect to (i) the size of the RVE and (ii) to statistical convergence related to microstructure realizations. For that purpose, we combine an incremental homogenization method [3] with a statistical convergence analysis of parameters related to the matrix phase only. The advantage is that the range of parameters to be identified is much narrower than for a general empirical constitutive law. Once identified and the convergence analysis performed with respect to both size of RVE and statistical realizations, the macroscopic constitutive law can be readily used for structure calculations. We illustrate the methodology by analyzing two-dimensional microstructures with randomly distributed cylindrical elastic rigid fibers, embedded in a elastoplastic or elasto-viscoplastic matrix. For these materials, the existence of an RVE is demonstrated for sizes of RVE corresponding to 17 − 18 and 14 − 15 times the diameter of the inclusions, respectively.
Effective size of RVE for finite element analysis of structures made of nonlinear random composites - ResearchGate. Available from: http://www.researchgate.net/publication/279488878_Effective_size_of_RVE_for_finite_element_analysis_of_structures_made_of_nonlinear_random_composites [accessed Jul 24, 2015].},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In the present work, we propose to determine the size of a representative volume element (RVE) in the case of nonlinear random composites with either elastoplastic or elasto viscoplastic phases. In such a case, the general form of the effective constitutive behavior is not known in advance and the response must be evaluated either by direct numerical computations on the RVE, either by an appropriate approximation scheme. Previous methodologies [1,2] for determining the size of RVE usually rely on analyzing the convergence of the RVE response computed numerically with respect to its size. In the present work, we analyze the convergence of parameters related to an incremental homogenization scheme, with respect to (i) the size of the RVE and (ii) to statistical convergence related to microstructure realizations. For that purpose, we combine an incremental homogenization method [3] with a statistical convergence analysis of parameters related to the matrix phase only. The advantage is that the range of parameters to be identified is much narrower than for a general empirical constitutive law. Once identified and the convergence analysis performed with respect to both size of RVE and statistical realizations, the macroscopic constitutive law can be readily used for structure calculations. We illustrate the methodology by analyzing two-dimensional microstructures with randomly distributed cylindrical elastic rigid fibers, embedded in a elastoplastic or elasto-viscoplastic matrix. For these materials, the existence of an RVE is demonstrated for sizes of RVE corresponding to 17 − 18 and 14 − 15 times the diameter of the inclusions, respectively.
Effective size of RVE for finite element analysis of structures made of nonlinear random composites - ResearchGate. Available from: http://www.researchgate.net/publication/279488878_Effective_size_of_RVE_for_finite_element_analysis_of_structures_made_of_nonlinear_random_composites [accessed Jul 24, 2015]. |
Trung Hieu Hoang; Mohamed Guerich; Julien Yvonnet An incremental multilevel computational homogenization method for elastoplastic composites Inproceedings Dans: 18th International Conference on Composite Structures (ICCS18), Lisbonne, Portugal, 2015. Résumé | Liens | BibTeX @inproceedings{hoang:hal-01166485,
title = {An incremental multilevel computational homogenization method for elastoplastic composites},
author = {Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166485},
year = {2015},
date = {2015-06-01},
booktitle = {18th International Conference on Composite Structures (ICCS18)},
address = {Lisbonne, Portugal},
abstract = {In the present work, a multilevel computational homogenization method is proposed for solving
structure problems made of elastoplastic phases. To reduce computations costs of classical multi-
level finite element methods [2], we use an incremental framework, initiated in Hill citehill1965
and developed for semi-analytical method e.g. in [1]. In semi-analytical approaches, the approx-
imation of the Mori-Tanaka scheme induces limitations in accuracy for some configurations like
strongly anisotropic microstructures and does not allow capturing effective smooth hardening in-
duced by the different elastoplastic phases. In the proposed method, we use the incremental ap-
proach by computing directly the effective macroscopic tensor related to the linearized problem
numerically by Finite Elements on an RVE. The method is validated through an example of ho-
mogenization of a composite microstructure with elastic rigid fibers, embedded in an elastoplastic
matrix. The results showed that the method is more accurate than semi-anlytical methods and is
less computationally demanding than FE2. An incremental multilevel computational homogenization method for elastoplastic composites - },
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
In the present work, a multilevel computational homogenization method is proposed for solving
structure problems made of elastoplastic phases. To reduce computations costs of classical multi-
level finite element methods [2], we use an incremental framework, initiated in Hill citehill1965
and developed for semi-analytical method e.g. in [1]. In semi-analytical approaches, the approx-
imation of the Mori-Tanaka scheme induces limitations in accuracy for some configurations like
strongly anisotropic microstructures and does not allow capturing effective smooth hardening in-
duced by the different elastoplastic phases. In the proposed method, we use the incremental ap-
proach by computing directly the effective macroscopic tensor related to the linearized problem
numerically by Finite Elements on an RVE. The method is validated through an example of ho-
mogenization of a composite microstructure with elastic rigid fibers, embedded in an elastoplastic
matrix. The results showed that the method is more accurate than semi-anlytical methods and is
less computationally demanding than FE2. An incremental multilevel computational homogenization method for elastoplastic composites - |
Julien Yvonnet; A. Tognevi; Guy Bonnet; M. Guerich A filter-based computational homogenization method for handling non-separated scales problems Inproceedings Dans: 12e Colloque National en Calcul des Structures, Presqu’^ile de Giens, France, 2015. Liens | BibTeX @inproceedings{yvonnet:hal-01166483b,
title = {A filter-based computational homogenization method for handling non-separated scales problems},
author = { Julien Yvonnet and A. Tognevi and Guy Bonnet and M. Guerich},
url = {https://hal-upec-upem.archives-ouvertes.fr/hal-01166483},
year = {2015},
date = {2015-01-01},
booktitle = {12e Colloque National en Calcul des Structures},
address = {Presqu’^ile de Giens, France},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
