Infill Optimization for Additive Manufacturing—Approaching Bone-Like Porous Structures
By Jun Wu, Niels Aage, Rüdiger Westermann, Ole Sigmund. IEEE Transactions on Visualization and Computer Graphics, 2016
544 citations recorded by the source corpus.
Porous structures such as trabecular bone are widely seen in nature. These structures are lightweight and exhibit strong mechanical properties. In this paper, we present a method to generate bone-like porous structures as lightweight infill for additive manufacturing. Our method builds upon and extends voxel-wise topology optimization. In particular, for the purpose of generating sparse yet stable structures distributed in the interior of a given shape, we propose upper bounds on the localized material volume in the proximity of each voxel in the design domain. We then aggregate the local per-voxel constraints by their p-norm into an equivalent global constraint, in order to facilitate an efficient optimization process. Implemented on a high-resolution topology optimization framework, our results demonstrate mechanically optimized, detailed porous structures which mimic those found in nature. We further show variants of the optimized structures subject to different design specifications, and we analyze the optimality and robustness of the obtained structures.
Subfields: Automotive Engineering, Building and Construction, Civil and Structural Engineering
View Paper: https://www.semanticscholar.org/paper/53054a9d6c6a44c8781a296d4f3da4e68848a428
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Automotive Engineering
In Building and Construction
In Civil and Structural Engineering
Citations in the corpus
- Compatibility in microstructural optimization for additive manufacturing (2019, methodology): “Alexandersen and Lazarov [25] and Wu et al.[26, 27] performed structural analysis and optimization on the fully refined microstructure details, naturally ensuring the connectivity of the resulting microstructures.”
- Homogenization-based stiffness optimization and projection of 2D coated structures with orthotropic infill (2019, methodology): “For a fair comparison the structure optimized using the approach of Wu et al. (2017) is mapped on a fine mesh of 3000 × 1000 elements using nearest-neighbor interpolation.”
- Current and future trends in topology optimization for additive manufacturing (2018, methodology): “The numerical designs gained from (Wu et al. 2018) is a mix of both walls and trusses, where the former is preferred from the viewpoint of solid mechanics but the latter has better functionality (e.”