Lattice support structure discrete optimization for additive manufacturing
Communication avec acte
Date
2018Abstract
The emergence and improvement of Additive Manufacturing technologies allow the fabrication of complex shapes so far inconceivable. However, to produce those intricate geometries, support structures are required. Besides wasting unnecessary material, these structures are consuming valuable production and post-processing times. This paper proposes a new framework to optimize the geometry and topology of inner and outer support structures. Starting from a uniform lattice structure filling both the inner and outer areas to be supported, the approach removes a maximum number of beams so as to minimize the volume of the support. The geometry of the initial lattice structure is optimized at the beginning considering the possibilities of the manufacturing technologies. Then, the pruning of the structure is performed through a genetic algorithm, the parameters of which have been optimized through a design of experiments. The proposed approach is validated on several test cases of various geometries, containing both inner and outer parts to be supported. The generated support structures are compared to the ones obtained by commercial software.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureThe emergence and improvement of Additive Manufacturing technologies allow the fabrication of complex shapes so far inconceivable. However, to produce those intricate geometries, support structures are required. Besides ...
-
Article dans une revue avec comité de lectureTruss lattice structures are intricate geometries, whose fabrication has recently been simplified by the development of Additive Manufacturing (AM) technologies. These lightweight geometries present great volume densities ...
-
Communication avec acteVAISSIER, Benjamin; CHOUGRANI, Laurent; PERNOT, Jean-Philippe; VERON, Philippe (CAD Solutions, LLC, 2019)In a context of full cooperative data exchanges, frequent transfers between specialized software and remote design and manufacturing, fluidity is the key. It is thus important to reduce the size of data encoding files in ...
-
Article dans une revue avec comité de lectureTo facilitate the transfer, storage and manipulation of intricate parts’ geometry whose fabrication has been made possible thanks to the rise of Additive Manufacturing (AM) technologies, an encoding framework reducing the ...
-
Article dans une revue avec comité de lectureThe presence of holes in a triangle mesh is classically ascribed to the de ciencies of the point cloud acquired from a physical object to be reverse engineered. This lack of information results from both the scanning process ...