| [1] |  | A simplified method to assess the elastoplastic response of standalone tubular Floating Offshore Wind Turbine supports subjected to ship impact, PROCEEDINGS OF THE 9th INTERNATIONAL CONFERENCE ON COLLISION AND GROUNDING OF SHIPS AND OFFSHORE STRUCTURES (ICCGS 2023), NANTES, FRANCE, 11-13 SEPTEMBER 2023, G. Vandegar, Y. P.Sone Oo, I. Ladeira, H. Le Sourne, S. Echeverry, Advances in the Collision and Grounding of Ships and Offshore Structures Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures Iccgs 2023, pp. 447-454, ISBN:[9781032611303], CRC Press (2024), doi:10.1201/9781003462170-54
| This paper presents a rapid collision simulation tool for Floating Offshore Wind Turbines (FOWTs), with specific focus on spar buoy floating platforms. The tool is based on a semi coupled approach, applying the rigid body dynamics program MCOL to simulate external dynamics. Internal mechanics is modeled based on an elastoplastic simplified method for the impact response of standalone tubular OWT s...
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| [2] |  | Chloride Diffusion in Geopolymers Containing Phase Change Materials, Bouha El Moustapha, Stephanie Bonnet, Abdelhafid Khelidj, American Concrete Institute ACI Special Publication, Vol. SP-362, pp. 763-773, ISBN:[9781641952507], American Concrete Institute (2024), doi:10.14359/51742007
| The aim of this research is to examine the steady state chloride migration properties of blast furnace slag based geopolymer mortars (GPMs) and Portland cement based mortars (CMs). Three grades of microencapsulated phase change materials (MPCM) were used: 0%, 5%, and 10%. In addition, three rates of metakaolin (MK), namely 0%, 10%, and 20%, were added to study their influence on geopolymer perform...
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| [3] | | VIBRATION AND FATIGUE MITIGATION OF A 5 MW BARGE-TYPE FLOATING OFFSHORE WIND TURBINE UNDER MISALIGNED WIND AND WAVE LOADINGS, Riad El hamoud, Philip Alkhoury, Mourad Ait-Ahmed, Abdul Hamid Soubra, Franck Schoefs, Rabih Dib, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering OMAE, Vol. 7, ISBN:[9780791887851], American Society of Mechanical Engineers (2024), doi:10.1115/OMAE2024-131914
| This paper aims at investigating vibration suppression and fatigue mitigation of a 5 MW barge type floating offshore wind turbine (FOWT) under misaligned wind and wave loadings. A passive omnidirectional tuned mass damper (TMD) installed in the floating platform was employed. The aero hydroservoelastic coupled simulation program for wind turbines, OpenFAST, was used to perform the numerical simula...
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| [4] |   | Functionally Graded Beams: A Parametric Study and Eco-design Methodology, Salma Es-Satte, Syed Yasir Alam, Jean Michel Torrenti, Ahmed Loukili, Fib Symposium, pp. 825-832, ISBN:[9782940643240] (2024)
| Eco design, a part of eco construction, integrates sustainable principles into modern structures to promote ecological well being and economic viability. Unlike traditional concrete elements with uniform mixtures, innovative multi layer beams can enhance concrete efficiency through functional grading by adjusting the mix across the beam's shape to meet specific material needs, providing an opportu...
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| [5] |  | Multiscale Mechanical Investigation of Ternary Binders Incorporating Calcined Clay and Slag, Imane Bekrine, Benoit Hilloulin, Ahmed Loukili, American Concrete Institute ACI Special Publication, Vol. SP-362, pp. 49-63, ISBN:[9781641952507], American Concrete Institute (2024), doi:10.14359/51740874
| Recently, considerable attention has been given to the use of calcined clays in cementitious systems due to their availability and the enhancement of concrete durability properties they can generate thanks to the pozzolanic reaction. However, the interpretation of macro mechanical behavior of cementitious materials incorporating calcined clays is still challenging, especially when combined with ot...
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| [6] | | Development of a New Laboratory Earthquake Setup Featuring a Paraffin oil-based Gel as Analogue Material, Abdallah Aoude, Ioannis Stefanou, Jean Francois Semblat, Vito Rubino, Proceedings of the World Congress on New Technologies, ISBN:[9781990800450], Avestia Publishing (2024), doi:10.11159/icceia24.140
| In this study, we present the development of a new experimental setup composed of an analogue fault surrounded by paraffin oil based gel, which allows us to simulate earthquake like events in the laboratory. The apparatus is designed to test the possibility of mitigating earthquake like instabilities using control theory. We present the physical properties of the paraffin oil based gel as function...
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| [7] | | Machine Learning Models for Predicting Rheological Properties of Self-Consolidating Concrete (SCC), Abdelhamid Hafidi, Ilhame Harbouz, Benoit Hilloulin, Ahmed Loukili, Ammar Yahia, American Concrete Institute ACI Special Publication, Vol. SP-362, pp. 249-267, ISBN:[9781641952507], American Concrete Institute (2024), doi:10.14359/51740887
| This study investigates the potential of machine learning (ML) models to predict the rheological properties of self consolidating concrete (SCC), with a focus on yield stress and viscosity. The significance of this research arises from the environmental impact of cement production and the pressing need to explore low carbon alternatives. Supplementary cementitious materials (SCM), such as slag and...
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| [8] |  | Reduced-scale Testing of Masonry Structures Subjected to Explosions, Ahmad Morsel, Filippo Masi, Ioannis Stefanou, Panagiotis Kotronis, Guillaume Racineux, Emmanuel Marche, World Congress on Civil Structural and Environmental Engineering, ISBN:[9781990800351], Avestia Publishing (2024), doi:10.11159/icsect24.132
| In recent decades, the number of historical and ancient structures exposed to blast loads has steadily increased, either due to accidental or deliberate explosions, such as the archaeological site of Palmyra in 2015 and Beirut explosion in 2020. It is important to protect such assets against blast loading. However, investigating how structures respond to explosions cannot rely solely on numerical ...
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| [9] | | Simplified Structural Assessment of Ship Collision Against a Semisubmersible Offshore Wind Floater, Salazar L. Priscilla, Gabriel Vandegar, Ye Pyae Sone Oo, Herve Le Sourne, Philippe Rigo, Proceedings of the International Offshore and Polar Engineering Conference, Vol. 1, pp. 3385-3392, ISBN:[9781880653784] (2024)
| The analysis of structural damage is studied by different approaches including empirical, experimental, and nonlinear finite element methods This work presents a simplified methodology to estimate the force penetration curve for a large diameter cylindrical panel, corresponding to the structural arrangement in the outer tanks of a semisubmersible floater. The methodology is based on the upper boun...
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| [10] | | Multi-scale characterization of carbon-fibre reinforced PEEK composites manufactured by laser-assisted tape placement, Noe Restif, Suzanne Laik, Mael Peron, Federica Daghia, Frederic Jacquemin, Materials Research Proceedings, Vol. 41, pp. 613-622, ISBN:[9781644903131], Materials Research Forum LLC (2024), doi:10.21741/9781644903131-68
| The Laser Assisted Tape Placement forming process of thermoplastic composites enables the rapid production of laminates. However, it requires the tuning of the processing parameters, which is currently limited by a misunderstanding of the consolidation phenomena occurring during process and the interlaminar properties related with strong welded interfaces. This study aims at establishing correlati...
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| [11] | | Monitoring the temperature during thermoplastic composites assembling with fibre Bragg gratings: Validation using a rheometer, Adrian Korycki, Fabrice Carassus, Christan Garnier, France Chabert, Pascal Casari, Toufik Djilali, Materials Research Proceedings, Vol. 41, pp. 2678-2685, ISBN:[9781644903131], Materials Research Forum LLC (2024), doi:10.21741/9781644903131-293
| For many years, thermoplastic composites have been conquering the technological market in commercial applications in civil and military structures, with particular emphasis on aircraft. One of their most attractive advantages is the potential to be repaired and welded in a short time. However, due to the lack of knowledge on the impact of process parameters (time, pressure, temperature) bonding th...
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| [12] | | Analysis of the Influence of Recycled Sand Characteristics on the Rheological Properties of Self-Compacting Concrete by the Concrete Equivalent Mortar Method, Lara Saad, Mustapha Nouri, Mahfoud Tahlaiti, Abdelhafid Khelidj, Fib Symposium, pp. 1172-1180, ISBN:[9782940643257] (2024)
| This work investigates the effects of substituting natural sand with excavated soil sand in the formulation of self compacting concrete (SCC) intended for the precast industry. A total of four different excavation soil sand deposits and one natural alluvial sand were studied to evaluate their properties. Using the concrete equivalent mortar method, the reference mortar (RM) was developed from a se...
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| [13] | | Influence of curing under stress on the geotechnical behavior of a treated silty soil, Lucile Pigeot, Nathalie Dufour, Anthony Soive, Fabienne Dermenonville, Ahmed Loukili, Helene Calissano, Laurent Batilliot, XVIII ECSMGE 2024, CRC Press (2024), doi:10.1201/9781003431749-490
| Improving the soil in place by adding lime, hydraulic binder and increasing compaction is widely used to carry out geotechnical works. Laboratory test campaigns are conducted to validate the treatment and its consistency with the expected mechanical properties. They allow on the one hand to follow the mechanical evolution due to hydration of the cement phases and on the other hand to observe the s...
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| [14] | | Articles du Prix Rene Houpert RUGC 2024, A. Khelidj, Jean Torrenti, Franck Taillandier, Rencontres Universitaires de Genie Civil 2024 (2024)
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| [15] | | Some experiences in mixed finite element formulations for (model-free) data-driven computational mechanics, Felipe Figueredo Rocha, Thiago Quinelato, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Recently, the so called (model free) data driven computational mechanics (DDCM) has established an alternative paradigm allowing to completely bypass explicit constitutive models. Such method. The DDCM solver relies exclusively on a finite dataset of gradient fluxes pairs and consists of two steps : i) a continuous constrained minimisation problem and ii) a nearest neighbour search (of finite natu...
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| [16] |  | Chemo-mechanical modeling of an OPC Cement paste exposed to external sulfate attack : an approach based on sulfates adsorbed in C-S-H and micromechanics, Anthony Soive, Syed Yasir Alam, Berrabeh Safae, Ahmed Loukili, 78TH RILEM annuel Week and Rilem Conference on sustainable materials and structures : Meeting the major challenges of the 21ST century - SMS 2024 (2024)
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| [17] | | Meta-modelisation pour la fiabilite de structures en fatigue avec cumul non-lineaire du dommage, V Rey, C Freyssinet, F Schoefs, T Moro, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Lestimation de la duree de vie des structures en fatigue est generalement faite par un cumul lineaire du dommage. Dans ce papier, on se propose dutilise un modele dendommagement a deux echelles pour la fatigue dont les parametres materiau sont des variables aleatoires calibrees a partir des courbes contraintes nombre de cycles a rupture (courbes S N) aleatoires. Cela permettra de considerer a la f...
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| [18] | | Evaluation of phase-field models for fracture with an explicit time integration scheme, Lamia Mersel, Pascal Bouda, Jeremy Germain, Julien Rethore, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| We propose different staggered resolution strategies of the variational phase field fracture formulation using a fully explicit time integration scheme. Parabolic or hyperbolic partial differential equations (PDE) are two alternatives governing the damage evolution and compatible with explicit solvers. We have implemented these models and compared with the standard elliptic damage formulation. The...
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| [19] | | Chloride ingress into low carbon concrete in non-saturated condition: state of the art for on-site studies in the case of atmospheric tidal or splash area, Gayelle Fahed, Stephanie Bonnet, Anthony Soive, 12th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete (2024)
| The carbon footprint of cement production has led to increased interest in developing concrete with lower carbon emissions by incorporating supplementary cementitious materials (SCMs). However, the understanding of how chloride ingress behaves over the long term and under real site conditions when SCMs are used remains incomplete. Many studies have been conducted in laboratory settings to explore ...
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| [20] | | Influence of the non-singular terms and the crack velocity on KIC of an epoxy resin, Bastien Lammens, Gerald Portemont, Julien Berthe, Rian Seghir, Julien Rethore, Crack Paths 2024 (2024)
| Organic matrix laminated composites are increasingly used in the aeronautical field toreduce the weight of the structure. These materials are designed for certain elements such as thefuselage or wings of aircraft. These elements are subjected to impact such as bird strikes orhailstone impacts that can lead to delamination. This is a process of macroscopic decohesion ofthe interlaminar environment,...
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| [21] | | Co-allotropic transformation study by in situ automated testing : EBSD analysis, Pierre-Antoine Dubos, Ines Addi, Samuel Branchu, Baptiste Girault, David Gloaguen, 1eres journees du groupe des utilisateurs Gatan et Edax (Gate) (2024)
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| [22] | | Modeling and experimental analysis of moisture diffusion behavior in bio-based balsa wood core composite sandwich, Yuan Wu, Jamal Fajoui, Pascal Casari, Sylvain Freour, Marianne Perrin, Marie-Laetitia Pastor, Xiaojing Gong, Proceedings of the 21st European Conference on Composite Materials, Vol. 7, pp. 115, European Society for Composite Materials (ESCM) (2024), doi:10.60691/yj56-np80
| This work investigates the moisture diffusion behavior of bio based balsa wood and balsa core sandwich structures. All the special dog bone balsa wood and sandwich specimens were immersed in water at room temperature to saturation, and the moisture absorption kinetics were identified analytically and numerically. It was found that the final saturated MC in the GFRP balsa sandwich was only 18 % of ...
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| [23] | | Tow-drop areas influence on composite laminates in Automated Fiber Placement, Felix Thebault, Alexandre Clement, Sylvain Freour, Gwenole Le Moal, Pascal Casari, Proceedings of the 21st European Conference on Composite Materials, Vol. 5, pp. 702, Nantes Universite (2024), doi:10.60691/yj56-np80
| Composite materials are used in industry due to their superior strength to weight ratio compared to metallic materials. One prevalent manufacturing process for composite parts is Automated Fiber Placement (AFP). However, this process is subject to inherent limitations that can result in the formation of resin pockets or overlaps. These can appear at tow drop areas, which are a typical type of desi...
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| [24] | | High performance computing on images to study the impact of defects from LPBF additive manufacturing, Lilou Gautier, Didier Bardel, Xiaodong Liu, Mathilde Chevreuil, Julien Rethore, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Le procede LPBF fait partie des methodes de fabrication additive metallique les plus utilisees. Cependant, une mauvaise maitrise de cette technologie peut induire des defauts dont la criticite peut affecter significativement la durabilite des structures. Ce papier presente une demarche permettant de faire un lien direct entre descripteurs statistiques, images des defauts et comportement mecanique ...
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| [25] | | X-Mesh: La methode des elements finis avec des elements degeneres, Antoine Quiriny, Jonathan Lambrechts, Nicolas Moes, Jean-Francois Remacle, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| X Mesh est une nouvelle approche de tracking dinterface qui se base sur la deformation extreme du maillage. Lidee principale est dautoriser la presence delements degeneres afin de permettre le relais continu dans le temps de linterface. Dans ce travail, nous nous interessons a la resolution delements finis en presence delements degeneres tant sur le plan de la theorie mathematique que sur la faisa...
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| [26] | | La regularisation Lipschitz pour la methode Data Driven, Vasudevan Kamasamudram, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| La notion de mecanique numerique pilotee par les donnees (Data Driven Computational Mechanics, DDCM) a ete introduite dans larticle de Kirchdoerfer et Ortiz, CMAME, 2016, ou le comportement des materiaux est decrit par une base de donnees contraintes deformations plutot quun modele constitutif. Lobjectif de cet article est dappliquer la methodologie DDCM aux cas ou le materiau peut subir des effet...
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| [27] | | R3XA: Toward a metadata standard for experimental (photo)mechanics datasets, Benoit Blaysat, Rebecca Bonnaire, Pascal Bouda, John-Eric Dufour, Sylvia Feld-Payet, Raphael Fouque, Thomas Fourest, Thomas Jailin, Raphael Langlois, J. Lachambre, Christophe Le Bourlot, Jean-Charles Passieux, Jean-Noel Perie, Julien Rethore, Tonya Rose, Emmanuel Roubin, Theo Sentagne, Jean-Francois Witz, PhotoMechanics - International DIC Society 2024 Conference, pp. 47 (2024)
| Open data are digital data whose access and use are free to users, and which may be produced under public funding. They are distributed in a structured manner following a metadata standard. The number of opendatasets increases in experimental mechanics, but, to our knowledge, there is no metadata standard specific to the field of experimental mechanics yet. In this talk, an initiative in this dire...
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| [28] | | Simulations pilotees par les donnees : quelle richesse pour la base de donnees materiau ?, Auriane Platzer, Adrien Leygue, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Les methodes de simulation pilotees par les donnees inspire du paradigme data driven computational mechanics (DDCM) introduit par Kirchdoerfer et Ortiz en 2016 [4] reposent sur la def inition dune base de donnees representative du comportement materiau, qui vit dans un espace multidimensionnel. Pour explorer la necessite ou non de couvrir le plus largement possible cet espace, nous generons des ba...
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| [29] | | Phase velocity statistics in random textured polycrystals, Shahram Khazaie, Ningyue Sheng, Mathilde Chevreuil, Sylvain Freour, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| In real finite sized polycrystals, the background elastic properties are no longer deterministic. Consequently, the corresponding phase velocities and attenuation coefficients also become random. Recently, we showed that second order statistics of polycrystals effective elastic modulus tensor and the phase velocities reveal microstructural information such as the mean and standard deviation of gra...
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| [30] | | Analysis of fractures propagating in silver fir (Abies Alba) using High-Resolution Full-Field Measurements, Raphael Langlois, Arthur Bontemps, Rostand Moutou Pitti, Joseph Gril, Benoit Blaysat, SEM Annual Conference (2024)
| Wood as a material is inherently multiscale, viscous, heteregeneous and anisotropic. When combined with complex stress field due to a propagating crack, it leads to both theoretical and experimental difficulties. Therefore understanding wood fracture mechanics is a scientific challenge and a topical concern in the timber engineering community. For instance, crack bridges or micro cracking in wood ...
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| [31] | | Mechanical behavior of a treated silt subjected to curing stress., Lucile Pigeot, Nathalie Dufour, Helene Calissano, Laurent Batilliot, Fabienne Dermenonville, Anthony Soive, 12emes Journees Nationales de Geotechnique et de Geologie de lIngenieur (2024)
| An experimental protocol using a resonant column is proposed to simulate the curing of a silt stabilized with 1 % lime and 5 % hydraulic binder when placed in a high embankment. Shear modulus degradation curves measured on reconstituted soil specimens show that a mechanical gain is provided by curing under isotropic confining pressure of 500 kPa....
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| [32] | | Dynamics of moisture diffusion in epoxy resin : empirical and modeling insights into absorption-desorption behavior, Hamza Tarin, Jamal Fajoui, Julie Cocaud, Yuan Wu, Pascal Casari, Frederic Jacquemin, Amandine Celino, Sylvain Freour, Abdellah Arhaliass, Ahmed Rhallabi, Azzam El Maasri, Material Science, Vol. 2, pp. 714-721 (2024), doi:10.60691/yj56-np80
| Rapid advancements in the composite industry have led to an increase in the adoption of epoxy resins in high pressure applications in industries such as water transport systems, due to their enhanced mechanical properties. Despite their advantages, studies have proven that water absorption in epoxy tubes can degrade their mechanical properties when subjected to extreme environmental conditions. He...
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| [33] | | La Methode des Points Materiels (MPM) couplee avec Galerkin discontinu et l'integrateur temporel ADER, Alaa Lakiss, Thomas Heuze, Mikhael Tannous, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| La Methode des Points Materiels couplee avec une approximation Galerkin discontinu [1] est une methode prometteuse pour traiter des problemes dimpact sur des solides subissant de grandes deformations. On presente dans ce travail une extension de cette methode aux approximations dordre arbitrairement eleve. Ceci est realise grace a lintegrateur temporel ADER, qui dune part permet de construire une ...
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| [34] | | Etude de l'impact environnemental du procede de fabrication Wire Arc Additive Manufacturing, Antoine Balidas, Jean Yves Hascoet, Olivier Kerbrat, Manufacturing'21 (2024)
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| [35] | | Assimilation de donnees et reduction de modele pour la surveillance d'une structure navale, Mathias Riou, Mathilde Chevreuil, Cedric Leblond, Dominique Leduc, Emilien Billaudeau, Cyril Lupi, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Cette etude porte sur lapplication de lassimilation de donnees a la surveillance en temps reel de letat structurel dune piece dequipement naval en materiau composite. Cet equipement est instrumente par des capteurs de deformation fibre optique a reseaux de Bragg, pour capter localement les deformations de la structure. La methode dinterpolation empirique (EIM), methode de reduction de modele et da...
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| [36] | | Simulation numerique d'ecoulement de fluides a seuil avec la methode X-Mesh, Vincent Degrooff, Jean-Francois Remacle, Nicolas Moes, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Ce travail porte sur la simulation numerique decoulements de fluides a seuil decrits par le modele de Bingham. Linterface solide liquide qui apparait dans de tels ecoulements est capturee en utilisant lidee X Mesh qui permet des deformations extremes du maillage afin dameliorer la qualite des simulations a faible cout. Les equations de conservation sont resolues via une fonctionnelle discretisee p...
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| [37] | | HPCrack : Un code massivement parallele pour les simulations numeriques des problemes de rupture a partir d'images, Xiaodong Liu, Julien Rethore, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| HPCrack se demarque dans la simulation realiste de la rupture de materiaux, operant directement a lechelle de voxel a partir dimages de grande envergure, sans idealisation geometrique. Developpe en C/C++, ce code polyvalent offre une flexibilite avec des configurations de parallelisme independantes, adaptees a diverses plates formes. Cette approche en eliminant les idealisations geometriques, perm...
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| [38] | | Towards the optimization of the infusion process through numerical permeability analysis and simulation, Nihad Siddig, Paris Mulye, Yves Le Guennec, Philippe Le Bot, Damien Lecointe, Yvan Denis, Elena Syerko, Olivier Fouche, Christophe Binetruy, Proceedings of 21st European Conference on Composite Materials (ECCM-21), Nantes, France, Vol. 5 (2024)
| The liquid resin infusion (LRI) process is continuously used for manufacturing large industrial parts across various sectors, yet it poses challenges due to its inherent variabilities. The MONOCLE research project, led by the Jules Verne French Institute and industrial partners, aims to develop a digital monitoring approach for complex parts during infusion. This initiative seeks to enhance decisi...
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| [39] | | Modelisation numerique multi-echelle non lineaire d'un cable d'energie, Lara Zeidan, Patrice Cartraud, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| L'etude porte sur la modelisation dun cable denergie utilise pour leolien flottant. Ce cable presente un comportement en flexion non lineaire et dependant de lhistoire, qui resulte de contacts frottants entre ses constituants. Une approche de type FE2 est developpee pour realiser le couplage entre le modele poutre densemble du cable et un modele 3D detaille dun troncon de petite taille....
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| [40] | | Sur les donnees mecaniques en viscoelasticite lineaire harmonique, Laurent Stainier, Hossein Salashoor, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Cette communication sinteresse a la notion de distance entre etats mecaniques dans le contexte de la viscoelasticite harmonique. Par analogie avec le cas de lelasticite, nous discutons de la definition de potentiels (primal et dual) et de fonction decart constitutif. Ces notions sont notamment critiques pour les approches basees sur les donnees, pour la simulation ou lidentification....
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| [41] | | Approche multi-echelle de caracterisation des proprietes de transfert en fonction de la morphologie des materiaux cimentaires, Mohamad Achour, Emmanuel Roziere, Francois Bignonnet, Ouali Amiri, Academic Journal of Civil Engineering, Vol. 42, pp. 370-379, Academic Journal of Civil Engineering (2024), doi:10.26168/ajce.42.1.33
| Le coefficient de diffusion dun materiau cimentaire est fonction de sa microstructure et de sa morphologie a differentes echelles, allant du nanometre au centimetre. La morphologie depend de la formulation et des conditions de durcissement de ce materiau. Lapproche multi echelle sert a faire le lien entre les proprietes diffusives et mecaniques, la composition et la microstructure du materiau. Le ...
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| [42] | | Etude de leffet de la pression de cure sur la microstructure dun limon stabilise a la chaux et au liant hydraulique par tomographie in situ a rayons X., Lucile Pigeot, Rencontres Universitaires de Genie Civil 2024 (2024), doi:10.26168/ajce.42.1.83
| Le present article propose un developpement experimental qui vise a estimer leffet dune pression de confinement sur un sol limoneux stabilise a la chaux et au liant hydraulique pendant sa cure. En effet, dans les projets dinfrastructures lineaires actuels, les sols stabilises peuvent etre soumis a des contraintes importantes au sein douvrages geotechniques. Afin de montrer que ces conditions de cu...
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| [43] | | Vers une comprehension de la convergence de la methode d'identification data-driven, Nour Hachem, Adrien Leygue, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Lapproche didentification Data Driven (DDI), proposee par Leygue et al. (2018), permet destimer les champs de contraintes a partir des mesures de champs de deformation et des resultantes defforts appliques, sans postuler de modele de comportement. Une analyse mathematique approfondie de cette approche reste cependant a realiser. Ce travail presente une etude sur la convergence de la methode dans l...
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| [44] | | Multiphysics modelling of Titanium alloy Ti-6Al-4V realised by Wire Arc Additive Manufacturing (WAAM), Alizee Remy, Matthieu Rauch, Jean Yves Hascoet, Guillaume Ruckert, Manufacturing'21 (2024)
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| [45] | | From the PEEK microstructure at welded interfaces to the mechanical properties of thermoplastic composites manufactured by a Laser-Assisted Tape Placement process, Noe Restif, Mael Peron, Suzanne Laik, Federica Daghia, Frederic Jaquemin, Proceedings of the 21st European Conference on Composite Materials (2024)
| The Laser Assisted Tape Placement (LATP) process of thermoplastic composites enables the rapid production of laminates. However, it generates cooling rates gradients between the surface and the bulk of the plies, probably causing a crystallinity gradient through the thickness of the laminates, although this has not been demonstrated. In this study, different characterizations techniques have been ...
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| [46] | | Vers la caracterisation de comportement non-lineaire elastique anisotrope en grandes deformations par approche Data Driven, Annie Morch, Michel Coret, Adrien Leygue, Julien Rethore, Pauline Lecomte-Grosbras, Jean-Francois Witz, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| Les textiles prothetiques sont des materiaux de plus en plus utilises pour le renfort des parois souples du corps humain. Pour ameliorer les traitements chirurgicaux, il semble indispensable de mieux comprendre le role de ces textilesin vivo et limpact de leur architecture sur leurs proprietes. Nous proposons une methode basee sur lidentification Data Driven a partir de mesures experimentales pour...
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| [47] | | Algorithme predicteur-correcteur pour la simulation de comportements elastoplastiques sans modele de comportement, Heloise Dandin, Adrien Leygue, Laurent Stainier, 16eme Colloque National en Calcul de Structures (CSMA 2024) (2024)
| La methode Data Driven Computational Mechanics (DDCM), pour la resolution de problemes sans modele de comportement, permet de simuler des comportements anelastiques. Le comportement du materiau peut alors etre represente par un graphe materiau, qui encode a la fois les etats et les relations thermodynamiques qui les lient. Cependant, les resultats obtenus sont pollues par la presence de minima loc...
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| [48] | | Rheokinetics of thermosetting prepregs before gelation: an original device and experimental characterization procedure, Rima Sfar Zbed, Steven Le Corre, Vincent Sobotka, Mael Peron, 21st European Conference on Composite Materials (ECCM21) (2024)
| Knowledge about the mechanical properties' evolution of thermosetting composites throughout the manufacturing process is a very essential step in understanding the development of certain mechanisms, such internal stress generation and parts deformations, which are controlled by the presence of multiple multi physics phenomena that occur during the cure. This paper presents an original experimental...
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| [49] | | Prediction of Permeability of Multi-Scale Anisotropic Porous Media by a Novel Software Suite 'PoroS', Elena Syerko, Paris D. Mulye, Christophe Binetruy, Adrien Leygue, Proceedings of the 16th Annual Meeting & Conference on Porous Media InterPore 2024, Qingdao, China (2024)
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| [50] | | A fast testing method for mode-II fatigue crack growth of CFRP adhesive joints, Yuan Wu, Pascal Casari, Silvio De Barros, Adiana Silva, JST Endommagement et rupture des structures composites, Emmanuel Baranger (2024)
| To contribute to the progress of the mode II and fatigue test protocol for composite laminates, a fast testing method formode II fatigue crack growth of CFRP adhesive joints was developed with a high frequency of 5 Hz. And the new 3Dprinting technique was employed to produce the loads and supports for the 3 point bending test fixture. According tothe compliance calculation method, the mode II fati...
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| [51] | | Assessment of hydrodynamic characteristics and computational resources for submarine resistance analysis: A comparative study between CFD Codes with application of the BB2 Submarine, Noh Zainal Abidin, Frederic Grondin, Pol Muller, Jean-Francois Sigrist, 26th Numerical Towing Tank Symposium (NuTTS 2024) (2024)
| Submarines are vital for maritime defense, requiring optimized hydrodynamic performance to minimize resistance. Advancements in Computational Fluid Dynamics (CFD) enable accurate predictions of submarine hydrodynamics for optimal design. This study compared the meshing capabilities of OpenFOAM and commercial software as well as the performance of High Performance Computing (HPC) and standard PC re...
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| [52] | | Determination des coefficients de diffusion dans les C-S-H par dynamique moleculaire, Tarek Ihaddadene, Jerome Claverie, Francois Bignonnet, Ouali Amiri, Academic Journal of Civil Engineering, Vol. 42, pp. 404-413, Academic Journal of Civil Engineering (2024), doi:10.26168/ajce.42.1.36
| This article aims to investigate the atomic scale diffusion of chloride ions within the nanopores of C S H through molecular dynamics simulations. Three types of C S H pores (10, 20, and 30 A) were considered, maintaining a Ca/Si ratio of 1.2. Simulations were conducted at two temperatures (300 K, 291 K) with a NaCl molar concentration of 0.5 M. The spatial discretization of nanopores enabled the ...
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