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Article dans une revue

Identification of Johnson-Cook's Viscoplastic Model Parameters Using the Virtual Fields Method: Application to Titanium Alloy Ti6Al4V

Delphine Notta-Cuvier, Bertrand Langrand, Eric Markiewicz, Franck Lauro, Gérald Portemont

The identification of viscoplastic material parameters is addressed using a new powerful method: the virtual fields method (VFM). Contrary to classical procedures that are statically determined, the VFM is applied to heterogeneous mechanical fields. Without any hypotheses of homogeneity required,…

Strain, 2013, 49 (1), pp.22-45. ⟨10.1111/str.12010⟩. ⟨hal-03624231⟩

Article dans une revue

The control of myopic behavior in semi-heterarchical production systems: A holonic framework

Gabriel Zambrano Rey, Cyrille Pach, Nassima Aissani, Abdelghani Bekrar, Thierry Berger, Damien Trentesaux

Heterarchical control architectures are essentially founded on cooperation and full local autonomy, resulting in high reactivity, no master/slave relationships and local information retention. Consequently, these architectures experience myopic decision-making, bringing entities towards local…

Engineering Applications of Artificial Intelligence, 2013, 26 (2), pp.800-817. ⟨10.1016/j.engappai.2012.08.011⟩. ⟨hal-03468617⟩

Article dans une revue

Lower and upper solutions for the heat equation on a polygonal domain of R2

Colette De Coster, Serge Nicaise

We consider the nonlinear periodic-Dirichlet heat equation on a polygonal domain of the plane in weighted Lp-Sobolev spaces equation presented Here f is Lp(0; T;Lpμ(Ω)-Caratheodory, where L pμ(Ω) = {v ε Lploc(Ω) : rμv ε Lp(Ω)}, with a real parameter μ and r(x) the distance from x to the set of…

Differential and integral equations, 2013, 26 (5/6), pp.603-622. ⟨hal-03137717⟩

Chapitre d'ouvrage

Takagi-Sugeno Fuzzy Representation to Modelling and State Estimation

Mohammed Chadli, Thierry-Marie Guerra, Ivan Zelinka

This chapter shows the interest of Takagi-Sugeno (T-S) fuzzy model approach to apprehend nonlinear behaviors of physical systems and its application for observers design. From mathematical nonlinear model or experimental data, a T-S representation can be obtained using different techniques. This…

Ivan Zelinka; Václav Snášel; Ajith Abraham. Handbook of Optimization : From Classical to Modern Approach, Springer, pp. 451-479, 2013, 978-3-642-30503-0. ⟨hal-03455217⟩

Article dans une revue

Stability analysis of switching TS models using α-samples approach

Zsofia Lendek, Jimmy Lauber, Thierry-Marie Guerra, Paula Raica

In this paper we consider stability analysis of discrete-time switching systems represented by Takagi-Sugeno fuzzy models. For the analysis we use a switching Lyapunov function defined on the switches. In order to develop stability conditions, we consider the variation of this function along…

IFAC Proceedings Volumes, 2013, 46 (20), pp.468-472. ⟨10.3182/20130902-3-CN-3020.00059⟩. ⟨hal-03623183⟩

Article dans une revue

Option pricing with constant elasticity of variance (CEV) model

Rajae Aboulaich, M. L. Hadji, Abdelilah Jraifi

In this work we propose an approximate numerical method for pricing of options for the constant elasticity of variance (CEV) diffusion model. We prove firstly the existence and uniqueness of the solution in weighted Sobolev space, and then we propose the finite element method and finite difference…

Applied Mathematical Sciences, 2013, 7 (109), pp.5443-5456. ⟨10.12988/ams.2013.36339⟩. ⟨hal-03135010⟩

Communication dans un congrès

Control of Haptic Systems with Time-varying Delay

Quoc Viet Dang, Laurent Vermeiren, Antoine Dequidt, Michel Dambrine

This paper addresses the stable implementation of high stiffness interactions of objects in the virtual environment. The virtual wall is modeled as a mechanical system including a linear spring characterized by a virtual stiffness and a damper with a virtual damping in parallel. A novel approach…

IFAC Joint conference SSSC, TDS, FDA, Feb 2013, Grenoble, France. pp.445-450, ⟨10.3182/20130204-3-FR-4031.00136⟩. ⟨hal-03467517⟩

Article dans une revue

Experimental validation and critical analysis of inverse method in mass transfer using electrochemical sensor

Emna Berrich, Fethi Aloui, Jack Legrand

Rehimi et al. [1] numerically studied the frequency response of an electrochemical probe. They applied an inverse sequential algorithm of the convection diffusion equation to simulated periodic mass transfer signals in order to determine the wall shear rate. This paper presents an experimental…

Experimental Thermal and Fluid Science, 2013, 44, pp. 253-263. ⟨10.1016/j.expthermflusci.2012.07.001⟩. ⟨hal-03520746⟩

Article dans une revue

Analysis of inverse method applied on sandwich probes

Emna Berrich, Fethi Aloui, Jack Legrand

Parallel plate disks (PPD) are often used for analyzing the effect of small amplitude oscillations with different frequencies. These devices allow the imposing of a well-known flow kinematics. Mass transfer problems and, particularly, convection-diffusion problems relating wall shear rate to mass…

Journal of Fluids Engineering, 2013, 135 (1), ⟨10.1115/1.4007888⟩. ⟨hal-03521107⟩

Article dans une revue

Benchmarking Flexible Job-Shop Scheduling and Control Systems

Damien Trentesaux, Cyrille Pach, Abdelghani Bekrar, Yves Sallez, Thierry Berger, Thérèse Bonte, Paulo Leitão, José Barbosa

Benchmarking is comparing the output of different systems for a given set of input data in order to improve the system's performance. Faced with the lack of realistic and operational benchmarks that can be used for testing optimization methods and control systems in flexible systems, this…

Control Engineering Practice, 2013, 21 (9), pp.1204-1225. ⟨10.1016/j.conengprac.2013.05.004⟩. ⟨hal-03405597⟩