[PDF] Top 20 Simulation of metal forming processes : Numerical aspects of contact and friction

... line and the boundary are computed  If N is even, the point is outside  In case of failure, the algorithm is restarted with another outer point Problem formulation : Inside/Outside ... Voir le document complet

... types of application, mesh becomes unacceptable due to severe distortion or com- plex workpiece-die contact occurring which induces errors in the key internal variables (plastic strains and ...the ... Voir le document complet

... developed and maintained in several software companies which favor their diffusion in large and medium ...enterprises. Simulation is widely recognized by the engineers as a powerful tool for ... Voir le document complet

... frame of this paper is in the field of numerical simulation of forming pro- cesses by the finite element ...solution of steady state processes by numerical ... Voir le document complet

... 3D, and for very complex obstacles such as encountered in metal forming simulations, these methods are not very easy to implement into an existing finite element ...smoothing of the concave ... Voir le document complet

... analysis of thin structures is investigated using quadratic solid − shell (SHB-EXP) ...consist of a twenty-node hexahedral element, denoted SHB20-EXP, and its fifteen-node prismatic counterpart, ... Voir le document complet

... 3D numerical methodology based on a tetrahedral element was proposed in order to improve the finite element simulation of any metal forming ...generation and a field transfer ... Voir le document complet

... 3D metal forming processes, Automatic adaptive remeshing, A-posteriori error estimator, Transfer techniques, Equilibrated process 1 INTRODUCTION For a large class of problems such as ... Voir le document complet

... path of 0 dislocations, y the critical annihilation distance of dislocations and c D the average grain ...3 and 4, we compare, on a skin pass process, the polycrystalline model results ... Voir le document complet

... path of the material submitted to SPIF process, playing a role in the high formability, compared to the monotonic loading in the traditional ...Element simulation of a 50º wall angle cone shape ... Voir le document complet

... behavior of a single gas bubble rising in a viscous liquid due to buoyancy force has been extensively studied by different authors using different numerical ...methods. Numerical simulation ... Voir le document complet

... presence of voids has no eect on macroscopic deformation and b) the thermo-mechanical elds that are obtained from the macroscopic scale are considered as locally homogeneous and can be used as ... Voir le document complet

... process of polyphenylene sulfide/carbon fiber (PPS/CF) thermoplastic composite to predict the shape distortions during the forming process, such as wrinkles, fiber orientations and thickness ... Voir le document complet

... evolution of the material under roll gap, while the linear loading path method only gives a rough approximation of this ...results and those yielded by the LAM3 FE calculations is also due to the ... Voir le document complet

... Abstract An efficient simulation of thermal and mechanical models involved in thermosetting composites forming needs to overcome some numerical difficulties related to: i the multi-scale[r] ... Voir le document complet

... deposit and dissemination of sci- entific research documents, whether they are pub- lished or ...teaching and research institutions in France or abroad, or from public or private research ... Voir le document complet

... mechanisms of void closure are studied using a large campaign of 3D finite element simulations at the representative volume element ...morphology and the thermomechanical loading that a void might ... Voir le document complet

... with contact-friction, with an application to brake ...frequency and time ...degrees of freedom at the system level allows quick parametric analyses giving modification ...effect of the ... Voir le document complet

... benefit of adding an adhesive to the FSW process, the designer must take caution to use FSW operating parameters that do not lead to the thermal degradation of the ...prediction of the degradation ... Voir le document complet

... Arons and Scharlemann (1979) and Arons (1983) as a natural consequence of the polar cap pair formation front models with a space-charge-limited flow (SCLF) (see previous ...surface of last ... Voir le document complet