References of "Masset, Luc"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailMachining processes simulation : specific finite element aspects
Masset, Luc ULg; Debongnie, Jean-François ULg

in Journal of Computational & Applied Mathematics (2004, July 01), 168(1-2), 309-320

The paper presents a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. For these operations, the form error is often due to the flexibility ... [more ▼]

The paper presents a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. For these operations, the form error is often due to the flexibility of the workpiece and its supports. The finite element method is adopted to model the part geometry and to compute its deformations. Numerous load cases are required to obtain the form error so that classical resolution methods prove to be inefficient (CPU time, memory and disk space). The paper mainly focuses on the special computation scheme adopted in order to improve the resolution of such an atypical problem. [less ▲]

Detailed reference viewed: 87 (31 ULg)
Full Text
Peer Reviewed
See detailChatter maps for process design of powertrain components
Masset, Luc ULg; Debongnie, Jean-François ULg; Belluco, Walter

in Moisan, Alphonse; Poulachon, Gérard (Eds.) Proceedings of the 7th CIRP International Workshop on Modeling of Machining Operations (2004, May)

During rough machining operations of powertrain components, chatter vibrations may occur on the edges of flexible structures. This paper presents a numerical method, based on the finite element method and ... [more ▼]

During rough machining operations of powertrain components, chatter vibrations may occur on the edges of flexible structures. This paper presents a numerical method, based on the finite element method and Tlusty's theory, which gives a chatter map of the machined surface. Each map point represents the greatest depth of cut leading to unconditionally stable cut. Each value depends on the structural damping, the cutting stiffness and the local static stiffness, which is computed using conventional linear elastic FEA. Chatter maps offer a convenient and effective decision support system for robust process design. As a case study, the rough milling operation of a crankcase deck face with a two-stage cutter is presented. [less ▲]

Detailed reference viewed: 68 (3 ULg)
Full Text
Peer Reviewed
See detailSolving problems with contact in machining process simulation
Masset, Luc ULg; Debongnie, Jean-François ULg; Berger, Frederic

in Brucato, Valerio (Ed.) Proceedings of the 6th International ESAFORM Conference on Material Forming (2003, April)

At the 2001 Esaform conference, we have presented a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. The most relevant aspect of the ... [more ▼]

At the 2001 Esaform conference, we have presented a simulation tool designed to predict form errors of part surfaces obtained by face milling and turning processes. The most relevant aspect of the developed method is its ability to solve industrial cases with huge 3D finite element meshes in a very small time. Until recently, we were only considering pure linear problems. However, the simulation of several machining operations requires the introduction of contact. The present paper describes the numerical method developed to solve such non linear problems. [less ▲]

Detailed reference viewed: 198 (7 ULg)
Full Text
Peer Reviewed
See detailFonctionnement et performances des couloirs oscillants à glissement
Debongnie, Jean-François ULg; Masset, Luc ULg

in European Journal of Mechanical and Environmental Engineering (2001), 46(4), 243-254

This paper is devoted to the study of the efficiency of an oscillating trough for any value of the frequency. It is found that pure slipping or mixed cycles may occur, the latter comprising sticking ... [more ▼]

This paper is devoted to the study of the efficiency of an oscillating trough for any value of the frequency. It is found that pure slipping or mixed cycles may occur, the latter comprising sticking periods. The results of the present analysis concern the cyclic displacement, the mean velocity and the dissipated power. [less ▲]

Detailed reference viewed: 34 (5 ULg)
Full Text
Peer Reviewed
See detailFace milling and turning simulation with the finite element method
Masset, Luc ULg; Debongnie, Jean-François ULg; Beckers, Pierre ULg

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

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite ... [more ▼]

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite element code. The finite element analyses are very efficient on industrial applications thanks to the superelement method. Results are obtained in a short time which makes possible a wide range of simulations such as finding the best tool trajectory, testing several tools and cutting conditions and choosing the most suited fixture design. [less ▲]

Detailed reference viewed: 149 (6 ULg)
Full Text
Peer Reviewed
See detailControlling form errors from 3D measures
Debongnie, Jean-François ULg; Masset, Luc ULg

in ASME (Ed.) Proceedings of the 1999 ASME Design Engineering Technical Conference (1999, September)

Owing to the fact that a correct evaluation of form errors is particularly difficult by the classical ways, it seems more efficient to develop numerical algorithms from 3D measures. Several methods are ... [more ▼]

Owing to the fact that a correct evaluation of form errors is particularly difficult by the classical ways, it seems more efficient to develop numerical algorithms from 3D measures. Several methods are described, including direct and iterative ones. A new method is proposed, which is based on Lp-norms and a specialized algorithm. It proved to be the most effective and robust one on every studied application. [less ▲]

Detailed reference viewed: 24 (4 ULg)
Full Text
Peer Reviewed
See detailA model for the prediction of form errors in face milling and turning
Masset, Luc ULg; Debongnie, Jean-François ULg; Foreau, Sylvie et al

in ASME (Ed.) Proceedings of he 1999 ASME Design Engineering Technical Conferences (1999, September)

A method is proposed for predicting form errors due to both clamping and cutting forces in face milling and turning. It allows complex tool trajectories and workpiece geometries. Error computation is ... [more ▼]

A method is proposed for predicting form errors due to both clamping and cutting forces in face milling and turning. It allows complex tool trajectories and workpiece geometries. Error computation is performed by the finite element method. An experimental validation of the model for face milling is presented. Two industrial applications are produced in order to demonstrate the capabilities of the method. [less ▲]

Detailed reference viewed: 46 (6 ULg)
Full Text
See detailSimulation de l'usinage : essais de fraisage
Masset, Luc ULg; Debongnie, Jean-François ULg

Report (1998)

This report describe milling tests which have been done and their comparison to computational results. In order to obtain significant form defects, a very flexible work has been used. Difficulties arose ... [more ▼]

This report describe milling tests which have been done and their comparison to computational results. In order to obtain significant form defects, a very flexible work has been used. Difficulties arose in the primary machining of the workpiece, due to residual stresses. A more efficient machining scheme has then be defined for this step. In order to avoid complications coming from the multiplicity of the teeth of the milling tool, fly-dressing has been considered. The results are discussed in detail. [less ▲]

Detailed reference viewed: 119 (4 ULg)
Full Text
Peer Reviewed
See detailSur l'évaluation des défauts de forme à partir de mesures tridimensionnelles
Debongnie, Jean-François ULg; Masset, Luc ULg

in European Journal of Mechanical and Environmental Engineering (1998), 43(1), 13-21

Owing to the fact that a correct evaluation of form errors is particularly difficult by the classical ways, it seems more efficient to develop numerical algorithms from 3D measures. Several methods are ... [more ▼]

Owing to the fact that a correct evaluation of form errors is particularly difficult by the classical ways, it seems more efficient to develop numerical algorithms from 3D measures. Several methods are described, including direct and iterative ones. A new method is proposed, which is based on Lp-norms and a specialized algorithm. It proved to be the most effective and robust one in every studied application. Another problem which is seldom studied, concerns the sensibility of form errors to measure errors. A theory is presented which leads to a very simple result. [less ▲]

Detailed reference viewed: 66 (7 ULg)
Full Text
See detailModélisation du bridage
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1996)

This report is devoted to the modelling of the clamping devices in the projected machining simulation tool

Detailed reference viewed: 46 (4 ULg)
Full Text
See detailcatalogue des cas-tests
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1996)

This report describes the benchmarks which have been done with the machining simulation prototype.

Detailed reference viewed: 31 (3 ULg)
Full Text
See detailComparaisons calculs-essais pour le palier de suspension J64
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Masset, Luc ULg

Report (1996)

This report is devoted to the J64 suspension bearing benchmark. Unfortunately, the actual machining led to considerable vibrations, rendering any comparison impossible.

Detailed reference viewed: 25 (3 ULg)
Full Text
See detailComparaisons calculs-essais pour le carter d'alimentation d'huile TA96
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Masset, Luc ULg

Report (1996)

On this application, the computed results were in the opposite direction as compared to the physical tests. A sound analysis led to the result that a parasitic deformation was due to clamping deformations ... [more ▼]

On this application, the computed results were in the opposite direction as compared to the physical tests. A sound analysis led to the result that a parasitic deformation was due to clamping deformations. In fact, the three supports of the work were found to be unsufficiently coplanar. [less ▲]

Detailed reference viewed: 30 (4 ULg)
Full Text
See detailComparaisons calculs-essais pour l'éprouvette cylindrique
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Masset, Luc ULg

Report (1996)

In this first application of the machining simulation tool prototype, great difficulties were encountered in the interpretaion of the physical test. In fact, parasitic deformations occured, with a three ... [more ▼]

In this first application of the machining simulation tool prototype, great difficulties were encountered in the interpretaion of the physical test. In fact, parasitic deformations occured, with a three-lobed form. This implied the necessity of filtering the experimental data and a physical interpretation of the undue deformation. A theoretical study is performed, leading to the result that this phenomenon is due to the combined effect of the clearance of the clamping jaws and the pre-stress of the dead center. [less ▲]

Detailed reference viewed: 33 (3 ULg)
Full Text
See detailRépartition des forces d'usinage
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Masset, Luc ULg

Report (1996)

In the frame of the feasability study of a machining simulation tool, this report starts from the fact that the concentrated loads which were formerly used are somewhat defective from several points of ... [more ▼]

In the frame of the feasability study of a machining simulation tool, this report starts from the fact that the concentrated loads which were formerly used are somewhat defective from several points of view. A procedure to compute distributed loads is described. [less ▲]

Detailed reference viewed: 86 (8 ULg)
Full Text
See detailProcedures de limitation des cas de charge
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to special procedures allowing a reduction of the computed load cases in order to reduce the computational time.

Detailed reference viewed: 50 (5 ULg)
Full Text
See detailDescription d'une méthode de reconstitution de la surface usinée
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to the obtention of the machined surface from a series of finite element computations

Detailed reference viewed: 63 (4 ULg)
Full Text
See detailRecommandations relatives aux maillages
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation tool, this report is devoted to the obtention of a suitable finite element mesh of the work.

Detailed reference viewed: 52 (5 ULg)
Full Text
See detailProcédures d'identification des paramètres de charge
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of a machining simulation, this report describes how to compute the nodal components of the cutting forces on the finite element mesh.

Detailed reference viewed: 40 (4 ULg)
Full Text
See detailCatalogue des cas-tests avec justification des motifs
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In this first report of a research for RENAULT, a preliminary list of benchmarks is defined.

Detailed reference viewed: 32 (3 ULg)