WIAS Preprint No. 2615, (2019)

Structural multiscale topology optimization with stress constraint for additive manufacturing



Authors

  • Auricchio, Ferdinando
  • Bonetti, Elena
  • Carraturo, Massimo
  • Hömberg, Dietmar
  • Reali, Alessandro
  • Rocca, Elisabetta

2010 Mathematics Subject Classification

  • 74P05 49M05 74B99

Keywords

  • Additive manufacturing, first-order necessary optimality conditions, phase-field method, structural topology optimization, functionally graded material

DOI

10.20347/WIAS.PREPRINT.2615

Abstract

In this paper a phase-field approach for structural topology optimization for a 3D-printing process which includes stress constraint and potentially multiple materials or multiscales is analyzed. First order necessary optimality conditions are rigorously derived and a numerical algorithm which implements the method is presented. A sensitivity study with respect to some parameters is conducted for a two-dimensional cantilever beam problem. Finally, a possible workflow to obtain a 3D-printed object from the numerical solutions is described and the final structure is printed using a fused deposition modeling (FDM) 3D printer.

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