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Optimization of Lattice Infill Distribution in Additive Manufacturing

[+] Author Affiliations
Francesco Campagna

Politecnico di Torino, Torino, Italy

Alejandro R. Diaz

Michigan State University, East Lansing, MI

Paper No. DETC2017-67582, pp. V02AT03A028; 9 pages
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2A: 43rd Design Automation Conference
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5812-7
  • Copyright © 2017 by ASME


A technique is presented to optimize the distribution of the lattice infill in regions inside load bearing structures manufactured using additive manufacturing techniques. Internal boundaries of solid material separate regions of infill of the same microstructural scale. This scale may vary from region to region in the domain. The goal is to find distributions that maximize structural stiffness. The method is based on a topology optimization scheme to position internal boundaries separating infill regions, and relies on effective properties of known lattice topologies. An example illustrates every step of the procedure. Only extruded shapes (2 ½ D) are considered.

Copyright © 2017 by ASME



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