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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 ▲]

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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 ▲]

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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: 41 (4 ULg)
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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.

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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.

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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 ▲]

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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 ▲]

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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 ▲]

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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.

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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: 59 (4 ULg)
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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.

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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: 39 (4 ULg)
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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: 28 (3 ULg)
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See detailDescription de la loi de mouvement de l'outil
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the development of a simulation tool for machining, this report is devoted to the description of the tool motion.

Detailed reference viewed: 42 (3 ULg)
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See detailModélisation du brochage
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 is devoted to the modelling of the broaching process

Detailed reference viewed: 48 (3 ULg)
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See detailModèles de forces de coupe
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 is devoted to the prediction of the cutting forces.

Detailed reference viewed: 49 (3 ULg)
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See detailPrise en compte de l'enlèvement de matière dans le calcul des raideurs
Beckers, Pierre ULg; Debongnie, Jean-François ULg; Deltour, Béatrice et al

Report (1995)

In the frame of the feasability study of machining simulation, this report is devoted to the study of the stiffness variation during the machining process

Detailed reference viewed: 33 (3 ULg)