Research Status on Topology Optimization Design for Deformation Suppression in 3D Printed Structures

Haowen Pan

doi:10.54691/vxv53680

Authors

Haowen Pan

DOI:

https://doi.org/10.54691/vxv53680

Keywords:

Topology Optimization, Deformation Suppression in 3D Printing, Inherent Strain Method, Multi-objective Optimization.

Abstract

Aiming at the residual deformation problem caused by thermal stress in metal 3D printing, this study proposes a topology optimization design method incorporating manufacturing constraints. Efficient prediction of residual deformation and experimental validation are achieved by extracting inherent strain loads through elastoplastic thermo-mechanical coupled finite element analysis. Combined with the Floating Projection Topology Optimization (FPTO) framework, the sensitivity of residual deformation is derived, establishing a multi-condition multi-objective optimization algorithm that minimizes structural compliance and the P-norm of overall residual deformation, significantly suppressing manufacturing deformation while ensuring structural performance. The study validates the effectiveness of the method through 2D/3D case studies and indicates that the printing direction has a significant impact on deformation control.

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