Evaluation of simplification details for an adaptive shape modelling of components

To perform a mechanical simulation of a part, a geometrical model needs to be very often simplified. This simplification is performed based on hypotheses about its mechanical behaviour. Here, a new process of adaptive shape simplification is presented. The preparation of the model for the structural analysis acts upon an intermediate polyhedral representation that takes into account the mechanical hypotheses specified on the product shape. A mechanical a posteriori criterion has been implemented in order to estimate the accuracy of analysis results. When a detail proves to be influent on the mechanical behaviour, it can be re-inserted on the simplified model, which is so redefined. In this article, the focus is on the description of the geometric operators supporting the automatic process of adaptive modelling.