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Proceedings of CAD'17, 2017, 17-21
Automatic Construction of Structural CAD Models from 3D Topology Optimization

Jean-Christophe Cuillière, Vincent François, Alexandre Nana, Université du Québec à Trois-Rivières

Abstract. The development and use of topology optimization (TO) methods has been a very important subject of academic and industrial interest for 25 years. The fact that TO is now well mastered in 3D and that optimization is fully automated opens the path for very interesting developments in mechanical design. Indeed integrating and automating the use of TO inside 3D CAD environments allows extending it towards the automatic creation of parts and structures. However, filling the gap between 3D TO results and conventional manufacturing processes still remains a major challenge. The work presented in this paper is aimed at filling this gap for TO results that tend towards beam-like structures. Indeed, depending on parameters used in TO, optimized geometry generated from it can be very different. The TO method is Solid Isotropic Material with Penalization or SIMP. Non-design material refers to material that should not be modified or removed by the optimization process since it is generally related to other components.

Keywords. Topology optimization, CAD, integration, SIMP, skeletons, beam structures, mixed-dimensional analysis

DOI: 10.14733/cadconfP.2017.17-21