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Peer Reviewed
See detailNumerical modelling of a single storey industrial building at elevated temperature - comparison between the 2D and 3D analyses
de Souza Junior, Valdenir; Creus, G. J.; Franssen, Jean-Marc ULg

in Proceedings of the First South-American Congress on Computational Mechanics (2002)

Detailed reference viewed: 13 (2 ULg)
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See detailNumerical modelling of an in situ ventilation test in Callovo-Oxfordian claystone
Pardoen, Benoît ULg; Talandier, J.; Charlier, Robert ULg et al

Poster (2012, October)

Detailed reference viewed: 45 (29 ULg)
Peer Reviewed
See detailNumerical modelling of axially loaded stainless steel members under fire conditions
Franssen, Jean-Marc ULg; Lopes, N.; Vila Real, P. M. M. et al

in Camotim, D. (Ed.) Stability and ductility of steel structures (2006)

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See detailNumerical modelling of coupled mechanics and gas transfer
Gerard, Pierre ULg; Charlier, Robert ULg; Barnichon, Jean-Dominique et al

Poster (2007)

Detailed reference viewed: 36 (12 ULg)
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See detailNumerical Modelling of Coupled Mechanics and Gas Transfer around Radioactive Waste in Long-Term Storage
Gerard, Pierre ULg; Charlier, Robert ULg; Barnichon, Jean-Dominique et al

in Journal of Theoretical and Applied Mechanics (2008), 38(1-2), 25-44

During long-term storage of radioactive waste, steel containers will be corroded. This process leads to hydrogen production. A boundary value problem has been proposed to study the numerical modelling of ... [more ▼]

During long-term storage of radioactive waste, steel containers will be corroded. This process leads to hydrogen production. A boundary value problem has been proposed to study the numerical modelling of the gas migration and its coupling with the mechanical strains and stresses, under isothermal conditions. Biphasic fluid transfer model (considering water, vapour, gaseous hydrogen and dissolved hydrogen) is defined. A 2D axisymmetric case with simplified geometry close to waste disposal in clay is modelled. Fluid transport problem is first resolved. Then, coupled mechanics and fluid transfers are modelled to determine the coupling effects. [less ▲]

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See detailNumerical modelling of coupled poromechanics processes
Charlier, Robert ULg; Laloui, Liesse; Collin, Frédéric ULg

in Revue Européenne de Génie Civil (2006), 10(6-7), 669-702

This paper is the basis for a course dedicated to geomechanics for energy production. A number of different coupling are discussed, with respectively the fluid flow (saturated and unsaturated) and the ... [more ▼]

This paper is the basis for a course dedicated to geomechanics for energy production. A number of different coupling are discussed, with respectively the fluid flow (saturated and unsaturated) and the thermal transfers in deformable porous media. Eventually some aspects on the numerical modelling with the finite element method are discussed. [less ▲]

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See detailNumerical modelling of coupled transient phenomena
Charlier, Robert ULg; Radu, Jean-Pol ULg; Collin, Frédéric ULg

in Revue Française de Génie Civil (2001), 5(6), 719-743

The basic phenomena involved in thermo-hydro-mechanical processes in geomaterials have been described in the 1st chapter. The equations describing these phenomena are non-linear differential equations ... [more ▼]

The basic phenomena involved in thermo-hydro-mechanical processes in geomaterials have been described in the 1st chapter. The equations describing these phenomena are non-linear differential equations. Their solution can generally only be approximated thanks to numerical methods. This is the main subject of the present chapter. First the type of problems and the set of equations to be solved will be shortly recalled. Emphasis will be given on the non-linear contributions. In a second section, the mostly developed numerical method, i.e. the finite difference and the finite element methods will be discussed under the light of the problems to be treated. The iterative techniques allowing the solution of non linear equations will be described. A third section will be dedicated to the coupling terms and to their modelling. The question that rises then is How to model efficiently problems, which may differ highly from, the point of view of the time and length scales? [less ▲]

Detailed reference viewed: 37 (13 ULg)
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See detailNumerical modelling of ground temperature evolution and soil subsidence as a result of underground coal fire
Liu, XF; Collin, Frédéric ULg; Buzzi, O et al

in Australian Geomechanics Journal (2012), 47(4), 27-32

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See detailNumerical modelling of lateral-torsional buckling of steel I-beams under fire conditions - Comparison with Eurocode 3
Vila Real, Paulo M. M.; Franssen, Jean-Marc ULg

in Journal of Fire Protection Engineering (2001), 11(2), 112-128

A geometrically and materially non-linear finite element program, i.e., a general model, has been used to determine the lateral-torsional resistance of steel I-beams under fire conditions, according to ... [more ▼]

A geometrically and materially non-linear finite element program, i.e., a general model, has been used to determine the lateral-torsional resistance of steel I-beams under fire conditions, according to the same material properties of Eurocode 3, Part 1-2. Two yield strengths, one cross section, one type of load and four different time exposures to the ISO 834 standard fire have been considered. The numerical results have been compared to the results of the simple model presented in Eurocode 3, Part 1-2. When compared with the general model, this simple model leads to a safety level that depends on the slenderness of the beam, being unsafe for intermediate non-dimensional slenderness. A new proposal has been made for a simple model that ensures a conservative result when compared to the general model. [less ▲]

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See detailNumerical modelling of membrane action of composite slabs in fire situation
Vulcu, Cristian; Gernay, Thomas ULg; Zaharia, Raul et al

in Kodur, Venkatesh; Franssen, Jean-Marc (Eds.) Proceedings of the Sixth International Conference Structures in Fire (2010, June)

Membrane action in fire is now an intensively researched area, for which more improvement is always necessary. The paper presents some numerical simulations, done with the SAFIR program, in order to ... [more ▼]

Membrane action in fire is now an intensively researched area, for which more improvement is always necessary. The paper presents some numerical simulations, done with the SAFIR program, in order to derive more simple models for representing the partially protected composite floors in fire situation. The numerical models are calibrated using the results of three full scale tests that have been performed in recent years. [less ▲]

Detailed reference viewed: 148 (23 ULg)
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See detailNumerical modelling of metal forming - current practice and advanced applications
Cescotto, Serge ULg; Duchene, Laurent ULg; Pascon, Frédéric ULg et al

in Iu, V. P.; Lamas, L. N.; Li, Y. P. (Eds.) et al Computational Methods in Engineering and Science, lu et al. (eds), Proceedings of the 9th International Conference of enhancement and Promotion of Computing Methods for Engineering and Science (2003)

This paper first summarizes the current possibilities and the perspectives of effective modeling of metal forming processes. Practical considerations on manpower requirement and data availability are ... [more ▼]

This paper first summarizes the current possibilities and the perspectives of effective modeling of metal forming processes. Practical considerations on manpower requirement and data availability are included in the discussion. Then, two examples of advanced applications are presented: the micro-macro approach for the modeling of sheet metal forming and the modeling of continuous casting. [less ▲]

Detailed reference viewed: 31 (4 ULg)
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See detailNumerical modelling of mirror nozzle flow
De Cock, Nicolas ULg; Massinon, Mathieu ULg; Mercatoris, Benoît ULg et al

Conference (2014, July 15)

Detailed reference viewed: 62 (32 ULg)
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See detailNumerical modelling of seismic slope stability
Bourdeau, Céline ULg; Havenith, Hans-Balder ULg; Fleurisson, J. A. et al

in Lecture Notes in Earth Sciences (2004), 104

Earthquake ground-motions recorded worldwide have shown that many morphological and geological structures (topography, sedimentary basin) are prone to amplify the seismic shaking (San Fernando, 1971 ... [more ▼]

Earthquake ground-motions recorded worldwide have shown that many morphological and geological structures (topography, sedimentary basin) are prone to amplify the seismic shaking (San Fernando, 1971 [Davis and West 1973] Irpinia, 1980 [Del Pezzo et al. 1983]). This phenomenon, called site effects, was again recently observed in El Salvador when, on the 13th of January 2001, the country was struck by a M=7.6 earthquake. Indeed, while horizontal accelerations on a rock site at Berlin, 80 km from the epicentre, did not exceed 0.23 g, they reached 0.6 g at Armenia, 110 km from the epicentre. Armenia is located on a small hill underlaid by a few meters thick pyroclastic deposits. Both the local topography and the presence of surface layers are likely to have caused the observed amplification effects, which are supposed to have contributed to the triggering of some of the hundreds of landslides related to this seismic event (Murphy et al. 2002). In order to better characterize the way site effects may influence the triggering of landslides along slopes, 2D numerical elastic and elasto-plastic models were developed. Various geometrical, geological and seismic conditions were analysed and the dynamic behaviour of the slope under these conditions was studied in terms of creation and location of a sliding surface. Preliminary results suggest that the size of modelled slope failures is dependent on site effects. [less ▲]

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See detailNumerical modelling of steel beam-columns in case of fire - comparisons with Eurocode 3
Vila Real, Paulo; Lopes, Nuno; da Silva, Luis Simoes et al

in Fire Safety Journal (2004), 39(1), 23-39

This paper presents a numerical study of the behaviour of steel I-beams subjected to fire and a combination of axial force and bending moments. A geometrical and material non-linear finite element program ... [more ▼]

This paper presents a numerical study of the behaviour of steel I-beams subjected to fire and a combination of axial force and bending moments. A geometrical and material non-linear finite element program, specially established in Liege for the analysis of structures submitted to fire, has been used to determine the resistance of a beam-column at elevated temperature, using the material properties of Eurocode 3, part 1-2. The numerical results have been compared with those obtained with the Eurocode 3, part 1-2 (1995) and the new version of the same Eurocode (2002). The results have confirmed that the new proposal for Eurocode 3 (2002) is more conservative than the ENV-EC3 (1995) approach. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 46 (1 ULg)
See detailNumerical modelling of steel structures behaviour under fire conditions
Franssen, Jean-Marc ULg

Scientific conference (1997, April 02)

Detailed reference viewed: 5 (1 ULg)
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See detailNumerical modelling of storage racks subjected to earthquake
Degée, Hervé ULg; Denoël, Vincent ULg

in Proceedings of COMPDYN 07, Conference on Computational Dynamics (2007)

This paper presents some aspects of the non linear dynamic time-history analysis of storage racks made of thin-walled steel products commonly used in warehouses when they are subjected to an earthquake ... [more ▼]

This paper presents some aspects of the non linear dynamic time-history analysis of storage racks made of thin-walled steel products commonly used in warehouses when they are subjected to an earthquake action. It focuses essentially on the accounting for structural non-linearities (geometric second order behavior of the structure and non-linear material be-havior of the joints) and for the possible relative motion between the rack and the stored goods that occurs as soon as the inertial force exceeds the friction resistance. In particular, it presents the algorithm used of to couple these two problems, followed by some simple appli-cations and comparisons with test results. [less ▲]

Detailed reference viewed: 80 (9 ULg)
See detailNumerical modelling of the Canary Upwelling
Elmoussaoui, Abdellali; Djenidi, Salim ULg

in Annales Geophysicae. Series B, Terrestrial and Planetary Physics (1997), 15(suppl. II),

Detailed reference viewed: 7 (0 ULg)
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See detailNumerical modelling of the forging process of rolls for rolling mills
Charles, J. F.; Castagne, S.; Zhang, Lihong ULg et al

in Proceedings of the 5ème Congrès national belge, Mecanique théorique et appliquée (2000)

Detailed reference viewed: 17 (4 ULg)