Publications
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Timoshenko beam under Winkler foundation
We are interested in buckling for Timoshenko beam supported along its length by an elastic wall (Winkler foundation) and subjected to a longitudinal force. We use analytical methods to determine buckling load and mode shape rather than numerical methods. Haringx and Engesser models are compared. We show that the rigidity of the wall solely gouverns […]
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Modélisation multi-agent des systèmes industriels cyber-physiques fractals
Ce papier propose une modélisation basée sur des systèmes multi-agents pour la simulation d’un atelier de production considéré comme un système cyber-physique (CPS). Un système cyber-physique industriel, appelé en anglais “Cyber-Physical Production System” (CPPS), représente une composante fondamentale de l’industrie 4.0, qui influence fortement la manière de concevoir, piloter et superviser les ateliers de production […]
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A Numerical Approach for Buildings Reduced Thermal Model Parameters Evaluation
A Numerical Approach for Buildings Reduced Thermal Model Parameters Evaluation
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Shear-induced anisotropy in rough elastomer contact
True contact between randomly rough solids consists of myriad individual microjunctions. While their total area controls the adhesive friction force of the interface, other macroscopic features, including viscoelastic friction, wear, stiffness, and electric resistance, also strongly depend on the size and shape of individual microjunctions. We show that, in rough elastomer contacts, the shape of […]
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Shear-induced contact area anisotropy explained by a fracture mechanics model
This paper gives a theoretical analysis for the fundamental problem of anisotropy induced by shear forces on an adhesive contact, discussing the experimental data of the companion Letter. We present a fracture mechanics model where two phenomenological mode-mixity functions are introduced to describe the weak coupling between modes I and II or I and III, […]
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Identification of a cohesive zone model for cement paste-aggregate interface in a shear test
The development of tools, using a micromechanical approach, predicting the macroscopic behaviour of heterogeneous materials such as concrete, requires the knowledge of their microstructures (geometrical properties of phases), the behaviour of phases and the interaction laws between phases. This study is focused on a numerical modelling of a local shear test on a cement paste–aggregate […]
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On the improvement of thermal comfort in indoor spaces conditioned by split-type systems
Conventional on/off-based control split-type appliances are widely used in classrooms and offices, in Brazil and in many other countries, due to their low cost and ease of installation. However, occupants often complain about thermal discomfort depending on their position within the conditioned space, especially in positions that are directly affected by the draft, since those […]
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A dynamic programming-based maintenance model of offshore wind turbine considering logistic delay and weather condition
There are several challenges toward maintaining offshore wind turbines such as ensuring the intrinsic performance of the wind turbine, maximizing short- and long-term profits, and optimizing maintenance grouping. These criteria should be optimized in respect to several practical constraints. Moreover, issues such as decisionmaking in uncertain environments where reliability-oriented field data are insufficient and information […]
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Exploring SMEs’ open innovation practices diversity from four countries.
As far as we know, this paper constitutes a first approach to a cross-country comparison of open innovation practices in SMEs, a little explored field whose the surge of articles on this topic has increased significantly in recent years. Recent reviews have highlighted the need to consider context dependencies. Hence, this paper takes the fact […]
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Sentiment d’efficacité collective et professionnalisation en contexte d’apprentissage par projets
CESI a mis en place dans sa formation d’ingénieurs en alternance, en octobre 2015, l’Apprentissage Actif Par Projets (A2P2). L’apprentissage à l’école y est articulé autour de projets pluridisciplinaires à réaliser en groupes. Dans cet article nous proposons de questionner l’impact du sentiment d’efficacité collective et des situations pour le favoriser, dans le processus de […]
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Optimisation de la taille de flotte de robots dans atelier flexible : Approche par simulation
Dans cet article, nous proposons un outil d’aide à la décision basé sur la simulation multi-agent pour optimiser la taille d’une flotte de robots de transport dans un atelier flexible. Le simulateur prend en considération différents paramètres de coûts et de performance des machines de production et permet de simuler les éventuels embouteillages créés en […]
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Un processus décisionnel basé sur la localisation de ressources pour la planification dynamique des tâches
Les perturbations sur l’exécution des plan de production est un problème récurrent dont souffre la plus part des ateliers de productions industriels. Ses perturbations se manifestent souvent sous forme de retards, provoqué par l’absence de ressources humaines ou matérielles nécessaires à l’exécution de tâches. La localisation de ces ressources permet non seulement d’accélérer la récupération […]