This article broadens the scheme previously developed to associate topology optimization with additive manufacturing through the use of a virtual skeleton, consisting in solving the same physical problem with a discrete approach and then with a continuum one. This procedure for 3D designs is applied to various domain geometries, to demonstrate its pertinence on high-resolution industrial cases. An algorithm searching for the best printing direction, exploring the solid angle, is also described and validated; the surface-shaped presentation of the result allows immediate understanding of the influence of the discrete problem parameters, while its running time is much lower than a unique continuum optimization simulation, which proves the attractiveness of the method. In the three examples studied, the procedure outputs exhibit greater printability than the ones produced by traditional methods in each of the printing direction tested, albeit responsibility is left to the final user to choose his best trade-off. Furthermore, the unprintable zones are readily displayed to be either reworked or supported. Explanations about increase of convergence likelihood on discrete structures despite the geometry complexity of an industrial application are also provided and demonstrated.

Accepted:

Published online:

Yoram Mass ^{1};
Oded Amir ^{1}

@article{CRMECA_2018__346_11_1104_0, author = {Yoram Mass and Oded Amir}, title = {Using a virtual skeleton to increase printability of topology optimized design for industry-class applications}, journal = {Comptes Rendus. M\'ecanique}, pages = {1104--1121}, publisher = {Elsevier}, volume = {346}, number = {11}, year = {2018}, doi = {10.1016/j.crme.2018.08.005}, language = {en}, }

TY - JOUR AU - Yoram Mass AU - Oded Amir TI - Using a virtual skeleton to increase printability of topology optimized design for industry-class applications JO - Comptes Rendus. Mécanique PY - 2018 SP - 1104 EP - 1121 VL - 346 IS - 11 PB - Elsevier DO - 10.1016/j.crme.2018.08.005 LA - en ID - CRMECA_2018__346_11_1104_0 ER -

%0 Journal Article %A Yoram Mass %A Oded Amir %T Using a virtual skeleton to increase printability of topology optimized design for industry-class applications %J Comptes Rendus. Mécanique %D 2018 %P 1104-1121 %V 346 %N 11 %I Elsevier %R 10.1016/j.crme.2018.08.005 %G en %F CRMECA_2018__346_11_1104_0

Yoram Mass; Oded Amir. Using a virtual skeleton to increase printability of topology optimized design for industry-class applications. Comptes Rendus. Mécanique, Volume 346 (2018) no. 11, pp. 1104-1121. doi : 10.1016/j.crme.2018.08.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2018.08.005/

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