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Functional restructuring of CAD models for FEA purposes

Ahmad Shahwan 1 Gilles Foucault 1 Jean-Claude Léon 2 Lionel Fine 3 
1 G-SCOP_SIREP - Système d’Information, conception RobustE des Produits
G-SCOP - Laboratoire des sciences pour la conception, l'optimisation et la production
2 IMAGINE - Intuitive Modeling and Animation for Interactive Graphics & Narrative Environments
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology
Abstract : Digital Mock-ups (DMUs) are widespread and stand as reference model for product description. However, DMUs produced by industrial CAD systems essentially contain geometric models and their exploitation often requires user's input data to derive finite element models (FEMs). Here, analysis and reasoning approaches are developed to automatically enrich DMUs with functional and kinematic properties. Indeed, geometric interfaces between components form a key starting point to analyse their behaviours under reference states. This is a first stage in a reasoning process to progressively identify mechanical, kinematic as well as functional properties of the components. Inferred semantics adds up to the pure geometric representation provided by a DMU and produce also geometrically structured components and assemblies. Functional information connected to a structured geometric model of a component significantly improves the preparation of FEMs and increases its robustness because idealizations can take place using components' functions and components' structure helps defining sub-domains of FEMs.
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Ahmad Shahwan, Gilles Foucault, Jean-Claude Léon, Lionel Fine. Functional restructuring of CAD models for FEA purposes. Engineering Computations, 2015, 32 (1), pp.155-176. ⟨10.1108/EC-03-2013-0088⟩. ⟨hal-00922958v2⟩

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