Simulation d'un problème de contact par des méthodes de reduction de modèle pour une application temps reel.

CAD and virtual reality tools are useful to simulate the manipulation of rigid parts, and particularly their collisions. Real time simulation need to take into account the deformation of flexible part; this suppose the computation of the deformation of parts in real time, with mechanical contact. The finite-element method can not allow a real-time response for a non-linear mechanical model (geometry, material, mechanical contact). A methodology divided into two phases is proposed. First, the learning phase consists on a calculation campaign of characteristic load cases, in respect of the requirements of the real time simulation. Then, the real time phase, used the results of the first phase by interpolation. Only the first one is exposed in this paper. The aim is to obtain quickly a reduced response. In order to attempt this goal, model reduction methods are used. We focus on three reduction levels : adaptive method, POD approach, and hyper reduction. A crush of a cylinder in rubber is used to expose the performance of the model reduction methods. [ABSTRACT FROM AUTHOR]