Vers la modélisation d’une presse à vis : développement d’un modèle statique élastique

Abstract

The increasing use of superalloys in the forging industry induces the development of new manufacturing processes. These new processes are set up thanks to Finite Element simulation. But regarding the prediction of the energy required to form a part in superalloys, significant differences are observed between numerical and experimental results. In our vision, this can be explained by the fact that forging machines models implemented in Finite Element software are not enough detailed. Thus, this study focuses on the particular case of a forging machine limited in energy: a screw press. This work is a first step toward a complete and detailed modelling of the screw press. To begin, a purely static elastic model of the press uprights has been developed, and this model was validated by comparison with a Finite Element model of the uprights. Then, this Finite Elements model has been made more complex by adding the cross-head of the press. This model has been validated thanks to experiences carried out with the help of a 3D tracking points system, allowing us to analyze the press behavior during blows.