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See detailFinite element modeling of thermo-mechanical behaviour of a steel strand in continuous casting
Pascon, Frédéric ULg; Habraken, Anne ULg; Bourdouxhe, M. et al

in Habraken, Anne (Ed.) Proceedings of the 4th International Conference ESAFORM (2001)

Surface and internal quality of continuous cast products depends very much upon the behaviour of the strand in the mould. Among the parameters likely to influence this behaviour, the mould taper takes a ... [more ▼]

Surface and internal quality of continuous cast products depends very much upon the behaviour of the strand in the mould. Among the parameters likely to influence this behaviour, the mould taper takes a prominent part. In order to understand better the influence of this parameter, we have build up a thermo-mechanical finite element model. the model includes an elasto-visco-plastic law to describe the behaviour of steel from liquid to solid state, a thermo-mechanical element that takes into account thermal expansion and mechanical behaviour of the strand, a unilateral contact element, a mobile rigid boundary element to model the mould and its taper and an adapted loading element to model the ferrostatic pressure according to the liquid or solid state. [less ▲]

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See detailFinite element modelling and optimization of flexible multibody systems
Bruls, Olivier ULg

Scientific conference (2010, June)

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See detailFinite element modelling of an electrostatic painting device
Deliège, Geoffrey ULg; Henrotte, François; Hameyer, Kay

Conference (2002)

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See detailFinite element modelling of composite structures under crushing load
Chiu, Louis N.S.; Falzon, Brian G.; Boman, Romain ULg et al

in Composite Structures (2015)

This paper details the theory and implementation of a composite damage model, addressing damage within a ply (intralaminar) and delamination (interlaminar), developed for the simulation of the crushing of ... [more ▼]

This paper details the theory and implementation of a composite damage model, addressing damage within a ply (intralaminar) and delamination (interlaminar), developed for the simulation of the crushing of laminated composite structures. It includes a more accurate determination of the characteristic length to achieve mesh objectivity in capturing intralaminar damage consisting of matrix cracking and fibre failure, a load-history dependent material response, an isotropic hardening nonlinear matrix response, as well as a more physically-based interactive matrix damage mechanism. The developed damage model requires a set of material parameters obtained from a combination of standard and non-standard material characterisation tests. The fidelity of the model mitigates the need to manipulate, or “calibrate”, the input data to achieve good agreement with experimental results. This intralaminar damage model was implemented as a VUMAT subroutine, and used in conjunction with an existing interlaminar damage model, in Abaqus/Explicit. This approach was validated through the simulation of the crushing of a cross-ply composite tube with a tulip-shaped trigger, loaded in uniaxial compression. Despite the complexity of the chosen geometry, excellent correlation was achieved with experimental results. [less ▲]

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See detailFinite element modelling of electrostatic MEMS including the impact of fringing field effects on forces
Boutaayamou, Mohamed ULg; Nair, Harish; V Sabariego, Ruth ULg et al

in Proceedings of the 7th International Conference on Thermal, Mechanical and Multiphysics Simulation and Experiments in Micro-Electronics and Micro-Systems (EuroSimE2006) (2006)

The numerical models describing the behaviour of electrostatically actuated microsystems often disregard fringing fields. However, taking the fringing fields into account is crucial for an accurate ... [more ▼]

The numerical models describing the behaviour of electrostatically actuated microsystems often disregard fringing fields. However, taking the fringing fields into account is crucial for an accurate computation of the electrostatic forces. In this work, the finite element method is applied for modeling electrostatic actuators. The electrostatic force distribution is obtained by locally applying the virtual work method. A micro-beam and a comb drive are considered as test cases. The impact of the fringing field effects on the accuracy of electrostatic forces is shown through 2D and 3D parametric studies. [less ▲]

Detailed reference viewed: 73 (28 ULg)
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See detailFinite element modelling of ion convection by electrostatic forces
Deliège, Geoffrey ULg; Henrotte, François; Deprez, Wim et al

in IET Science, Measurement & Technology (2004), 151(6), 398-402

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See detailFinite element modelling of jointed rocks. Application to tunelling
Charlier, Robert ULg; El Kiri, Mohamed

in Int. Symp. on Assesment and preventin of failure phenomena in rocks engineering, ISMR (1993)

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See detailFinite element modelling of rock drilling.
Charlier, Robert ULg; Pierry, Joelle

in Int. Symp. on Assesment and prevention of failure phenomena in rocks engineering, ISMR (1993)

Detailed reference viewed: 24 (0 ULg)
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See detailFinite element Modelling of Shear Band Localisation and Application to Rock Cutting by a PDC Tool
Pierry, J.; Charlier, Robert ULg

in Proc. EUROCK'94 (1994, August)

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See detailFinite Element Modelling of Strong Electro-Mechanical Coupling in MEMS
Rochus, Véronique ULg

Doctoral thesis (2006)

Detailed reference viewed: 57 (12 ULg)
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See detailFinite element modelling of the competition between shear bands in the early stage of thrusting : Strain localisation and constitutive law influence
Barnichon, Jean-Dominique; Charlier, Robert ULg

in Special Publication - Geological Society of London (1996), 99

Detailed reference viewed: 64 (6 ULg)
See detailFinite element modelling of the induction heating of a moving wire
Henrotte, François; Pahner, Uwe; Deliège, Geoffrey ULg et al

in Compumag, Evian, France, July 2-5, 2001 (2001)

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See detailFinite element modelling of thermo-elasto-plastic water saturated porous materials
Luison, Loris; François, Bertrand ULg; Bortolotto, Roberto et al

Poster (2008)

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See detailFinite element modelling of thermo-elasto-plastic water saturated porous materials
Sanavia, Lorenzo; François, Bertrand ULg; Bortolotto, Roberto et al

in Journal of Theoretical and Applied Mechanics (2008), 38(1-2), 7-34

The purpose of this paper is to present a new nite element formulation for the hydro-thermo-mechanical analysis of elasto-plastic multiphase materials based on Porous Media Mechanics. To this end, the ... [more ▼]

The purpose of this paper is to present a new nite element formulation for the hydro-thermo-mechanical analysis of elasto-plastic multiphase materials based on Porous Media Mechanics. To this end, the ACMEG-T thermo-plastic constitutive model for saturated soils has been implemented in the nite element code COMES-GEO. Validation of the implemented model is made by selected comparison between model simulation and experimental results for di erent combinations of thermo-hydro-mechanical loading paths. A case of non-isothermal elasto-plastic consolidation is also shown. [less ▲]

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See detailFinite element modelling of thermo-mechanical behaviour of a steel strand in continuous casting
Pascon, Frédéric ULg; Habraken, Anne ULg; Bourdouxhe, Michel et al

in Proceedings of the 7th European Conference on Advanced Materials and processes (Euromat 2001) (2001)

An elastic-viscous-plastic constitutive law (Norton-Hoff type) is coupled to a contact law in a finite element code in order to model the behaviour of a steel strand in the mould of a continuous casting ... [more ▼]

An elastic-viscous-plastic constitutive law (Norton-Hoff type) is coupled to a contact law in a finite element code in order to model the behaviour of a steel strand in the mould of a continuous casting machine. Both thermal and mechanical type fields are computed. The objective is to compare for different industrial process conditions the thickness of the solidified shell as well as the stress and strain levels in this layer. More particularly, the model should lead to optimise the taper of the mould for different cross sections of steel strand. [less ▲]

Detailed reference viewed: 77 (8 ULg)
See detailFinite element models in electrical machine design
Hameyer, Kay; Henrotte, François; Vande Sande, Hans et al

Conference (2002)

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See detailFinite element prediction of the swift effect based on Taylor-type polycrystal plasticity models
Duchene, Laurent ULg; Delannay, L.; Habraken, Anne ULg

in Stören, Sigurd (Ed.) Proceedings of the 7th ESAFORM conference on Materials Forming (2004)

This paper describes the main concepts of the stress-strain interpolation model that has been implemented in the non-linear finite element code Lagamine. This model consists in a local description of the ... [more ▼]

This paper describes the main concepts of the stress-strain interpolation model that has been implemented in the non-linear finite element code Lagamine. This model consists in a local description of the yield locus based on the texture of the material through the full constraints Taylor’s model. The prediction of the Swift effect is investigated: the influence of the texture evolution is shown up. The LAMEL model is also investigated for the Swift effect prediction. [less ▲]

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See detailFinite element simulation of canine humeral condylar fractures
D'Otreppe, Vinciane ULg; Böhme, Béatrice; Balligand, Marc ULg et al

Conference (2011, July 04)

Humeral condylar fractures are common in dogs. Different types of fractures (lateral, medial, bicondylar) may occur, depending on the age of the dog and the position of its elbow during the impact. The ... [more ▼]

Humeral condylar fractures are common in dogs. Different types of fractures (lateral, medial, bicondylar) may occur, depending on the age of the dog and the position of its elbow during the impact. The goal of this work is to understand the effects of bone posture and skeletal development on canine humeral fractures by means of the finite element method. Four distinct finite element simulations were performed, corresponding to an immature and a mature dog elbow, respectively in extension and flexion. To create the finite element models, subject-specific finite element meshes were extracted from the CT-data. Appropriate material properties were used for cortical bone, trabecular bone and cartilage. The modified Mohr-Coulomb failure criterion was implemented to take account for strength asymmetry. Lateral humeral fractures are obtained for both the young and adult dog elbow, in extension and flexion. This is in agreement with clinical observations, in which lateral condylar fractures are most common. [less ▲]

Detailed reference viewed: 55 (11 ULg)
Peer Reviewed
See detailFinite element simulation of cold roll-forming processes
BUI, Q. V.; Ponthot, Jean-Philippe ULg

in ACOMEN 2005 (2005)

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See detailFinite Element Simulation of Lubricated Contact in Rolling using the Arbitrary Lagrangian-Eulerian Formulation
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in Computer Methods in Applied Mechanics and Engineering (2004), 193(39-41), 4323-4353

In this paper, the lubrication problem in numerical simulation of forming processes is considered. Two efficient convection algorithms are presented in order to update the value stored at the Gauss points ... [more ▼]

In this paper, the lubrication problem in numerical simulation of forming processes is considered. Two efficient convection algorithms are presented in order to update the value stored at the Gauss points during the Eulerian step of an arbitrary Lagrangian Eulerian computation in solid mechanics. They are based on the finite volume method and on the streamline upwind Petrov Galerkin method. After enumerating the difficulties encountered when trying to solve the lubrication problem with the finite element method, a generalization of the formulation introduced by Liu [Simulation of Ring Rolling Process by Arbitrary Lagrangian Eulerian Finite Element Method, vol. 20, p. 225; ASME Winter Meeting, Dallas, Tx, 1990, Int. J. Numer. Methods Engrg. 36 (1993) 855; Numerical Methods in Industrial Forming Processes, Valbonne, France, 1992, p. 731] for the thin film hydrodynamic lubrication regime is presented. This method is then applied to a strip rolling simulation, using the arbitrary Lagrangian Eulerian formalism. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 57 (11 ULg)