Computation of Components' Interfaces in Highly Complex Assemblies

François Jourdes 1 Georges-Pierre Bonneau 1, * Stefanie Hahmann 2 Jean-Claude Léon 2 François Faure 2, *
* Corresponding author
1 MAVERICK - Models and Algorithms for Visualization and Rendering
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
2 IMAGINE - Intuitive Modeling and Animation for Interactive Graphics & Narrative Environments
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : The preparation of CAD models from complex assemblies for simulation purposes is a very time-consuming and tedious process, since many tasks \rev{such as meshing and idealization} are still completed manually. Herein, the detection and extraction of geometric interfaces between components of the assembly is of central importance not only for the simulation objectives but also for all necessary shape transformations such as idealizations or detail removals. It is a repetitive task in particular when complex assemblies have to be dealt with. This paper proposes a method to rapidly and fully automatically generate a precise geometric description of interfaces in generic B-Rep CAD models. The approach combines an efficient GPU ray-casting technique commonly used in computer graphics with a graph-based curve extraction algorithm. Not only is it able to detect a large number of interfaces efficiently, but it also provides an accurate Nurbs geometry of the interfaces, that can be stored in a plain STEP file ~\cite{step:1994} for further downstream treatment. We demonstrate our approach on examples from aeronautics and automotive industry.
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François Jourdes, Georges-Pierre Bonneau, Stefanie Hahmann, Jean-Claude Léon, François Faure. Computation of Components' Interfaces in Highly Complex Assemblies. Computer-Aided Design, Elsevier, 2014, 2013 SIAM Conference on Geometric and Physical Modeling, 46, pp.170-178. ⟨10.1016/j.cad.2013.08.029⟩. ⟨hal-00854926⟩

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