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Design and experimental validation of self-supporting topologies for additive manufacturing

journal contribution
posted on 2019-01-01, 00:00 authored by Yun-Fei (Jack) Fu, Bernard RolfeBernard Rolfe, Louis Chiu, Yanan WangYanan Wang, X Huang, Kazem GhabraieKazem Ghabraie
Incorporating additive manufacturing (AM) constraints in topology optimisation can lead to performance optimality while ensuring manufacturability of designs. Numerical techniques have been previously proposed to obtain support-free designs in AM, however, few works have verified the manufacturability of their solutions. Physical verification of manufacturability becomes more critical recalling that the conventional density-based topology optimisation methods will inevitably require post-processing to smooth the boundaries before sending the results to a 3D printer. This paper presents the smooth design of self-supporting topologies using the combination of a new Solid Isotropic Microstructure with Penalisation method (SIMP) developed based on elemental volume fractions and an existing AM filter. Manufacturability of selected simulation results are verified with Fused Deposition Modeling (FDM) technology. It is illustrated that the proposed method is able to generate convergent self-supporting topologies which are printable using FDM.

History

Journal

Virtual and physical prototyping

Volume

14

Issue

4

Pagination

382 - 394

Publisher

Taylor & Francis

Location

Abingdon, Eng.

ISSN

1745-2759

eISSN

1745-2767

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2019, Informa UK Limited, trading as Taylor & Francis Group