| [1] |     | Numerical crashworthiness analysis of a spar floating offshore wind turbine impacted by a ship, S. Echeverry, L. Marquez, Ph Rigo, H. Le Sourne, Developments in the Collision and Grounding of Ships and Offshore Structures Proceedings of the 8th International Conference on Collision and Grounding of Ships and Offshore Structures Iccgs 2019, pp. 85-95, ISBN:[9780367433130] (2020)
| With the new developments of floating offshore wind turbines (FOWT), wind farms are located in deeper water, meaning they are closer to traffic cargo and passenger lanes, increasing probability of collision. This paper aims to analyze the crashworthiness of a spar FOWT by performing non linear finite element simulations, which in the future will serve to validate a simplified analytical method for...
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| [2] |  | Coupled NIRT/3D-DIC for a FEMU Identification of the Thermo-Mechanical Behavior of Zr-4 Claddings Under Simulated Reactivity Initiated Accident, T. Jailin, N. Tardif, J. Desquines, M. Coret, M. C. Baietto, T. Breville, P. Chaudet, V. Georgenthum, Conference Proceedings of the Society for Experimental Mechanics Series, pp. 41-47, ISBN:[9783030300975], Springer International Publishing (2020), doi:10.1007/978-3-030-30098-2_7
| Nowadays, full field measurements techniques enable heterogeneous experiments to be performed without the need of averaging assumptions. The richness and the quantity of recording data obtained by these techniques led to the development of robust identification methods, such as the finite element model updating (FEMU) technique. However, it is still difficult to measure both kinematic and thermal ...
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| [3] | | Dynamic ultimate strength of a container ship under sagging condition, George Jagite, Herve Le Sourne, Patrice Cartraud, Fabien Bigot, Quentin Derbanne, Sime Malenica, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering OMAE, Vol. 2B-2020, ISBN:[9780791884331], American Society of Mechanical Engineers (2020), doi:10.1115/OMAE2020-18198
| When technically specifying ships for the future, the following aspects are examples of what we will have even more focus on than today: bigger, lighter, and faster. Thereby, the hydro elastic type of structural response will be more and more significant. In addition, some of the recent container ships' designs are with very low values of the "minimum hogging still water bending moment."Combined w...
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| [4] | | Multiscale homogenization of a glass-PA66 fabric composite behavior for crash studies, P. Rozycki, M. A. Mbacke, A. T. Dau, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| In the automotive industry, the taking into account of different environmental conditions is a major key because it assures the cars to be well designed for quite all over the world. The introduction of some composite materials such as woven thermoplastic composites then complexifies the task of the engineers because due the sensitivity of the matrix to both temperature and hygrometry; they have t...
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| [5] | | A new approach to compute the non-linear whipping response using hydro-elastoplastic coupling, George Jagite, Herve le Sourne, Patrice Cartraud, Sime Malenica, Fabien Bigot, Jerome de Lauzon, Quentin Derbanne, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering OMAE, Vol. 2A-2020, ISBN:[9780791884324] (2020)
| In the last ten years, the importance of whipping on the extreme hull girder loads has received much attention, but its consequence on the hull girder's collapse is still unclear. The most common practice is to consider the structural behavior as linear elastic in the hydro elastic coupling, and as non linear elastoplastic in the ultimate strength evaluation. In order to investigate the influence ...
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| [6] | | Towards a method for the identification of water diffusion parameters in polymers and composites, Julie Cocaud, Amandine Celino, Sylvain Freour, Frederic Jacquemin, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| The aim of this work is to study the relevance of the diffusion parameters identified on kinetics whose saturation levels are unknown. Two types of diffusion kinetics have been considered: a Fickian and a non Fickian kinetics. Numerical experiments, based on the generation of noisy data corresponding to reference values of diffusion parameters, have been carried out. The two models used in this st...
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| [7] | | Consideration of climate change-induced corrosion by structural codes, Maria Nogal, Emilio Bastidas-Arteaga, Helena Maria Dos Santos Gervasio, IABSE Congress Christchurch 2020 Resilient Technologies for Sustainable Infrastructure Proceedings, pp. 1064-1070, ISBN:[9783857481703] (2020)
| The impact of climate change on ambient temperature and relative humidity along with the present CO2levels are speeding the corrosion process of reinforced concrete structures. The alarming cost of the associated reduction of the service life of structures, which is estimated to cost 3% to 4% of the Gross Domestic Product (GDP) of industrialized countries, has put the spotlight on the i...
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| [8] | | Non-linear constitutive law for a glass-PA66 fabric composite dedicated to numerical simulations in crash studies, Mamadou A. Mbacke, Patrick Rozycki, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| In the automotive field, it is important to predict materials behavior and thereby the components behavior with high accuracy. The first part of paper deals with a complete experimental characterization both for quasi static and dynamic loadings. In quasi static, we carried out trials at three different temperatures ( 40°C, 23°C and 80°C) for which, each time, three different levels of hygrometry ...
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| [9] | | A goal-oriented model reduction technique for parametric fluid-structure problems, Cedric Leblond, Mathilde Chevreuil, Cyrille Allery, Claudine Beghein, Proceedings of the 6th European Conference on Computational Mechanics Solids Structures and Coupled Problems Eccm 2018 and 7th European Conference on Computational Fluid Dynamics Ecfd 2018, pp. 358-369, ISBN:[9788494731167] (2020)
| The computation of the sound power level resulting from the vibration of submerged structures is a CPU time consuming process in the naval industry, due to both geometrical complexity and strong coupling with the fluid. The goal is here to obtain a parametric reduced order model (ROM), yielding a fast and accurate approximation of the radiated sound power level, when the parameters and the fluid l...
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| [10] | | Carbon/polyamide 6 thermoplastic composites for underwater applications, Mael Arhant, Pierre Yves Le Gac, Maelenn Le Gall, Christophe Briancon, Christian Burtin, Peter Davies, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| The composite materials used at sea are today nearly all based on thermoset resins (polyester, epoxy). However, there is an increasing number of thermoplastic matrix polymers available on the market (PP, PA, PPS, PEEK...), which offer possibilities for forming by local heating, attractive mechanical properties and the potential for end of life recycling. The main reasons for the slow adoption of t...
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| [11] | | Simplified modelling of surface ship whipping response to underwater explosion, R. Trivedi, H. Le Sourne, S. Paroissien, S. Branchereau, C. Lucas, Developments in the Collision and Grounding of Ships and Offshore Structures Proceedings of the 8th International Conference on Collision and Grounding of Ships and Offshore Structures Iccgs 2019, pp. 120-127, ISBN:[9780367433130] (2020)
| This paper presents a simplified method to assess the whipping response of a surface ship subjected to underwater explosion, without modelling explicitly the surrounding water. The early time action of the shock wave generated by the detonation is treated using Taylors theory. Then, a bubble of gas starts to pulse and the incident pressure coming from resulting water flows, which usually couples w...
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| [12] | | Mechanical characterization of fiber reinforced floor screeds: Influence of glass fibers on shrinkage and cracking mechanisms, Fella Chelha, Syed Yasir Alam, Ahmed Zakarya Bendimerad, Ahmed Loukili, American Concrete Institute ACI Special Publication, Vol. SP-343, pp. 70-79, ISBN:[9782883941427], fib. The International Federation for Structural Concrete (2020), doi:10.35789/fib.BULL.0095.Ch08
| Self compacting mortars and concretes for horizontal structures are cementitious mixtures that are both fluid and homogeneous, with the particularity of flowing under the effect of their own weight. Thanks to their homogeneous texture they offer the possibility of achieving good quality of finishing and many such advantages become the reason for their applications especially in slabs and floors. H...
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| [13] | | Methodology for consideration of ageing in the design of tidal turbine blades, S. Paboeuf, S. Durand, A. Favry, E. Billaudeau, P. Casari, L. Mouton, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| Due to a huge potential, more and more tidal turbine projects are developed in the world. The market study, performed by SEENEOH [1], shows that the majority of projects are horizontal axis turbines with composite materials blades. To assess the design of blades, some guidance notes and standards have been issued by Classification Societies as Bureau Veritas [2] or DNVGL. In addition, the Technica...
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| [14] | | A general method for optimal pressure sensor placement to detect race-trackings and predict their criticality in the resin transfer molding process, Christophe Binetruy, Nihad Siddig, Elena Syerko, Pavel Simacek, Suresh Advani, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| A common disturbance encountered during composite manufacturing is gaps between the preform and the mold wall, where resin can flow easily giving rise to the race tracking (RT) phenomenon. Race tracking is unavoidable in the Resin Transfer Molding (RTM) process and can lead to entrapment of air pockets which results in parts being discarded as scrap. In this study, a simplified cost effective simu...
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| [15] | | Statistical characterization of shale microstructure: Determination of representative elementary area, Ph Cosenza, D. Pret, S. Hedan, A. L. Fauchille, Rock Mechanics for Natural Resources and Infrastructure Development Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering ISRM 2019, pp. 1583-1590, ISBN:[9780367422844] (2020)
| This paper provides new estimates for Representative Elementary Area (REA) sizes of the Callovo Oxfordian (COx) claystone actively being studied in the framework of deep disposal of radioactive waste. These estimates obtained from a mineral map have been calculated by classical counting box and by two microstructural descriptors (i.e., two point probability function and variogram range). The class...
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| [16] | | Experimental investigation of intra-tow fluid storage mechanisms in dual-scale reinforcements, Mathieu Imbert, Sebastien Comas-Cardona, Emmanuelle Abisset-Chavanne, David Prono, Eccm 2018 18th European Conference on Composite Materials, ISBN:[9781510896932] (2020)
| Fibrous reinforcements feature dual scale porous microstructures. During injections (high speed RTM), these microstructures induce intra tow resin storage. The latter is considered permanent in the literature. However, in order to optimize high speed processes, a finer understanding of the storage and release mechanisms is required. An experimental program has been followed and is based on the inj...
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| [17] | | Characterization and prediction of microcracking in reinforced UHPFRC beams under bending, Vicky Turgeon-Mallette, Luca Sorelli, David Conciatori, Julien Rethore, American Concrete Institute ACI Special Publication, Vol. SP-343, pp. 391-400, ISBN:[9782883941427], fib. The International Federation for Structural Concrete (2020), doi:10.35789/fib.BULL.0095.Ch40
| The capacity of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) to develop multiple micro cracks instead and delay the localization of major cracks has great impact on the permeability and durability at serviceability state. In order to assess the durability of reinforced UHPFRC structures or rehabilitation layers, methods that accurately predict the microcrack width are necessary. This ...
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| [18] |  | Investigation of the sources of residual stresses on the assessment of the initial state of a thermoplastic matrix composite tube, L. Di Gennaro, Federica Daghia, Christophe Cluzel, Frederic Jacquemin, Aurelien Miller, 19th European Conference on Composite Materials (ECCM19 ) (2020)
| The use of composite materials in the automotive sector, in particular for lightweight structures, has grown steadily in the past decades. A major barrier to their increased usage is the low production rate due to a long manufacturing time, especially for thermoset matrix composites. Thermoplastic matrix composites, on the other hand, coupled with the manufacturing process Laser Assisted Tape Plac...
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| [19] | | Neutron and X-ray diffraction measurements to explore the influence of thermal, mechanical and thermomechanical loadings on the FCC retained phase of two phase HCP/FCC cobalt, Pierre-Antoine Dubos, Jamal Fajoui, Jamal Fajoui, Nadjib Iskounen, Michel Coret, Saurabh Kabra, Baptiste Girault, David Gloaguen, International Conference on Materials Science, Mechanical and Automotive Engineerings and Technology (2020)
| Thermal and mechanical effects on the phase transformation of polycrystalline two phase HCP/FCC cobalt have been studied in a coupled and decoupled way. This experimental work has involved in situ X ray and neutron diffaction analysis to determine phase proportions under various thermomechanical conditions. A quantitative analysis is proposed to better understand phase transformation in a cobalt r...
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| [20] | | EXPERIMENTAL AND NUMERICAL STUDY OF THE COMPOSITE WING STRUCTURE EMBEDDING SOLAR CELLS, Q Rouxel, Pierre-Antoine Dubos, Shahram Khazaie, S Lucas, Pascal Casari, Aerospace Europe Conference 2020 (2020)
| Reducing the CO2 emissions is one of the major objectives in aerospace engineering. In this regard, XSun startup is developing an autonomous solar drone, SolarXOne. The latter is independent on one hand in decision with an autopilot and on the other hand in energy using solar cells and batteries. This paper aims at presenting the mechanical behavior of the solar cells and their interactions with c...
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| [21] | | A polynomial expansion based model for evaluating wear of thin surface coatings in fea, Tauno Tiirats, Nicolas Chevaugeon, Nicolas Moes, Claude Stolz, Nabil Marouf, 14th World Congress on Computational Mechanics (WCCM) (2020)
| In the case of very thin soft surface coatings, the coating layer contribution is often discarded in a largescale Finite Element Analysis (FEA). This is mainly due to the extensive numerical cost involved. However, to avoid failure of contacting coated parts one has to consider wear of the coatings themselves. This adds additional layer of complexity to the problem. To overcome the excessive compu...
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| [22] | | Simulation of simultaneous squeeze-bleeding flow for the consolidation of unidirectional viscous prepregs, Paris D. Mulye, Gregoire Sorba, Alexandre Hautefeuille, Christophe Binetruy, Adrien Leygue, Sebastien Comas- Cardona, Elena Syerko, Suresh Advani, Proceedings of 19th European Conference on Composite Materials (ECCM-19), Nantes, France (2020)
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| [23] | | Forward models based on a modal approach for fast topological imaging of open elastic waveguides, Matthieu Gallezot, Seminaire du laboratoire POEMS (2020)
| This talk presents numerical models of the propagation and the diffraction of waves in open waveguides, i.e. with an unbounded cross section. These structures are widely encountered in civil engineering (embedded rock bolts, buried pipes...). The models are based on modal decompositions of the source or at the boundaries of a finite element box enclosing a diffracting object. I first recall that g...
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| [24] | | Solutions de simulation numerique de l'impression 3d de materiaux expansifs pour la realisation de pieces de tres grandes dimensions, Elodie Paquet, Benoit Furet, Sebastien Garnier, Sebastien Le Loch, Alain Bernard, NAFEMS FRANCE 2020 (2020)
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| [25] | | Three-dimensional hydro-mechanical modelling of suffusion in gap-graded granular soils for engineering practice, Jie Yang, Zhen-Yu Yin, Farid Laouafa, Pierre-Yves Hicher, Workshop Innovative numerical methods for internal erosion processes (2020)
| Currently, numerical studies at the real scale of an entire engineering structure considering suffusion are still rare. This study presents a 3D hydro mechanical continuous modeling approach considering suffusion in gap graded granular soils for engineering practice. It requires a relevant hydraulic model for suffusion to evaluate the changes in the fines content and a mechanical model for granula...
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| [26] | | Digues experimentales du CER de Rouen en sol limoneux traite a la chaux et non traite : evaluation apres 7 ans, Lucile Saussaye, Geetanjali Das, Andry Razakamanantsoa, Erwann Rayssac, Dimitri Deneele, Christophe Chevalier, Louis Battist, Gontran Herrier, Didier Lesueur, Nicolas Poncelet, Delphine Jacqueline, Michel Froumentin, Cindy Maisonnave, Edouard Durand, Harifidy Ranaivomanana, JNGG 2020, 10emes Journees Nationales de Geotechnique et de Geologie de l'Ingenieur, pp. 9 p (2020)
| En septembre 2011, deux digues experimentales ont ete construites sur le site du CER de Rouen. L'une a ete construite en utilisant un sol limoneux de classe GTR A1, la seconde est constituee du meme limon traite a 2,5% de chaux vive. Le present article fait etat de la methodologie deployee pour l'evaluation des caracteristiques des materiaux 7 ans apres le chantier de construction, en en...
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| [27] | | Residual stresses in thermoplastic composites during laser assisted tape deposition, Anna El Bayssari, Frederic Jacquemin, Mael Peron, Anais Barasinski, Federica Daghia, Damien Guillon, FabAddComp - Fabrication additive des composites (2020)
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