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Affichage de 2251 à 2260 sur 5635

  • Article dans une revue

Mesh Twisting Technique for Swirl Induced Laminar Flow Used to Determine a Desired Blade Shape

Asdis Helgadottir, Sylvain Lalot, François Beaubert, Halldor Pálsson

Swirling flow has been shown to increase heat transfer in heat exchangers. However, producing swirl while not presenting a severe pressure drop can be a challenge. In this paper, a desired shape of guidance blades for laminar swirl flow is determined by numerical simulation in OpenFOAM. Emphasis is…

Applied Sciences, 2018, 8 (10), pp.1865. ⟨10.3390/app8101865⟩. ⟨hal-03449889⟩

  • Article dans une revue

LMI-Based Exponential Estimates for Time-Delay Nonlinear Descriptor Systems ⁎ ⁎This work has been supported by the postdoctoral fellowship for CVU 366627, the ITSON Projects PROFAPI CA-18 2017-0088 and 2018-1062, and PFCE 2016-17. Juan Carlos Arceo was student at ITSON under CONACYT scholarship 415714 during the realization of this work.

Juan Carlos Arceo Luzanilla, Raúl Villafuerte, Víctor Estrada Manzo, Miguel Bernal

This paper presents novel results on exponential estimates for time-delay nonlinear descriptor systems with nonsingular left-hand side. By means of a Lyapunov-Krasovskii functional and an exact convex representation of the system, conditions in the form of linear matrix inequalities are found that…

IFAC-PapersOnLine, 2018, 51 (10), pp.139-144. ⟨10.1016/j.ifacol.2018.06.251⟩. ⟨hal-03671715⟩

  • Article dans une revue

Razumikhin-type Theorems on Practical Stability of Dynamic Equations on Time Scales

Bacem Ben Nasser, Michael Defoort, Mohamed Djemai, Taous-Meriem Laleg-Kirati

In this work, we investigate some Razumikhin-type criteria for the uniform global practical asymptotic stability on arbitrary time domains, for time-varying dynamic equations. Using Lyapunov-type functions on time scales, we develop appropriate inequalities ensuring that trajectories decay to the…

IFAC-PapersOnLine, 2018, 51 (16), pp.121-126. ⟨10.1016/j.ifacol.2018.08.021⟩. ⟨hal-03671746⟩

  • Communication dans un congrès

Towards Energy Efficient Scheduling and Rescheduling for Dynamic Flexible Job Shop Problem

Maroua Nouiri, Abdelghani Bekrar, Damien Trentesaux

Nowadays the migration to green manufacturing is the interest of many companies. Taken into account sustainability in all industrial activities is the main goal of sustainable intelligent manufacturing system. In recent years, the demand for energy and the investment in energy have continued to…

16th IFAC Symposium on Information Control Problems in Manufacturing, Jun 2018, Bergamo, Italy. pp.1275-1280, ⟨10.1016/j.ifacol.2018.08.357⟩. ⟨hal-03409367⟩

  • Communication dans un congrès

Characterization of a visco-hyperelastic synthetic gel for ballistic impacts assessment

Anthony Bracq, Grégory Haugou, Benjamin Bourel, Rémi Delille, Christophe Maréchal, Franck Lauro, Sébastien Roth, Olivier Mauzac

Understanding the human body response during impact has become a primary concern, especially in the field of ballistic impacts. Among various materials employed as human body substitutes, synthetic gel named SEBS is used in the present study. Mechanical characterization from quasi-static to very…

Society for Experimental Mechanics (SEM'2017), Jun 2017, Indianapolis, United States. ⟨10.1007/978-3-319-62956-8_19⟩. ⟨hal-03436839⟩

  • Article dans une revue

An Incremental Physically-Based Model of P91 Steel Flow Behaviour for the Numerical Analysis of Hot-Working Processes

Alberto Murillo-Marrodán, Eli Saúl Puchi-Cabrera, Eduardo Garcia, Mirentxu Dubar, Fernando Cortes, Laurent Dubar

This paper is aimed at modelling the flow behaviour of P91 steel at high temperature and a wide range of strain rates for constant and also variable strain-rate deformation conditions, such as those in real hot-working processes. For this purpose, an incremental physically-based model is proposed…

Metals, 2018, 8 (4), pp.269. ⟨10.3390/met8040269⟩. ⟨hal-03450069⟩

  • Communication dans un congrès

Cyber Security of the Railway wireless system: detection, decision and Human-in-the-Loop

Christophe Gransart, Virginie Deniau, Eric Pierre Simon, Anthony Fleury, Stéphane Lecoeuche, Emilie Masson, Patrick Millot

The networks used in the Railway domain are usually heterogeneous, not enough protected and not fitted to the usual Cyber Security requirements in terms of sustainability, protection and attack detection. Furthermore, the quick evolution of the telecommunication means, the threats and the…

TRA 2018 (Transport Research Arena), Apr 2018, Vienna, Austria. 10p. ⟨hal-01854846⟩

  • Article dans une revue

Timetable rearrangement to cope with railway maintenance activities

Luis Diego Arenas Pimentel, Paola Pellegrini, Said Hanafi, Joaquin Rodriguez

Maintenance activities on the railway infrastructure are necessary to maintain its functionality and availability. Commonly, the maintenance activities are planned first. Then, the timetable is elaborated respecting the unavailability periods caused by the former. However, sometimes unplanned…

Computers and Operations Research, 2018, 95, pp123-138. ⟨10.1016/j.cor.2018.02.018⟩. ⟨hal-01764963⟩

  • Article dans une revue

Friction coefficients in cold forging: A global perspective

Peter Groche, Philipp Kramer, Niels Bay, Peter Christiansen, Laurent Dubar, K. Hayakawa, Chengliang Hu, K. Kitamura, Philippe Moreau

Worldwide, at least twenty different tribological tests have been proposed for the empirical determination of friction coefficients in cold forging processes. Due to the varying test setups, means of measurement, and level of abstraction, the comparability of the outcomes is, however, disputable.…

CIRP Annals - Manufacturing Technology, 2018, 67 (1), pp.261-264. ⟨10.1016/j.cirp.2018.04.106⟩. ⟨hal-03450016⟩

  • Communication dans un congrès

Evolution of holonic control architectures towards Industry 4.0: A short overview

Olivier Cardin, William Derigent, Damien Trentesaux

The flexibility claimed by the next generation production systems induces a deep modification of the behavior and the core itself of the control systems. Overconnectivity and data management abilities targeted by Industry 4.0 paradigm enable the emergence of more flexible and reactive control…

16th IFAC Symposium on Information Control Problems in Manufacturing, INCOM 2018, Jun 2018, Bergamo, Italy. pp.1243-1248, ⟨10.1016/j.ifacol.2018.08.420⟩. ⟨hal-01900270⟩