Nanya Li , Changkun Sun , Hanlin Zheng , S.K. Ong (1)
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Design optimization of graded cellular structures for additive manufacturing via differentiable Voronoi diagram
Graded cellular structures offer a controlled distribution of material, resulting in customization of stiffness. This paper presents a novel design optimization method for graded topological structures based on differentiable Voronoi diagrams. Unlike conventional discrete Voronoi diagrams, which lack differentiability to solve gradient-based structure optimization problems, the proposed method leverages a SoftMax activation function to tune pixel regions into continuous stress field defined in a Euclidean space. Furthermore, pseudo site points and metric tensor have been applied for rotating and distorting Voronoi cells, so as to achieve much higher specific strength and energy absorption property than traditional optimization methods.
期刊介绍:
CIRP, The International Academy for Production Engineering, was founded in 1951 to promote, by scientific research, the development of all aspects of manufacturing technology covering the optimization, control and management of processes, machines and systems.
This biannual ISI cited journal contains approximately 140 refereed technical and keynote papers. Subject areas covered include:
Assembly, Cutting, Design, Electro-Physical and Chemical Processes, Forming, Abrasive processes, Surfaces, Machines, Production Systems and Organizations, Precision Engineering and Metrology, Life-Cycle Engineering, Microsystems Technology (MST), Nanotechnology.