Topology optimization considering overhang constraints: Eliminating sacrificial support material in additive manufacturing through design

By Andrew T. Gaynor, James K. Guest. 2016

469 citations recorded by the source corpus.

Subfields: Civil and Structural Engineering, Computational Theory and Mathematics, Industrial and Manufacturing Engineering

View Paper: https://www.semanticscholar.org/paper/eb7dfd2ae1588e216169c67edf4fcd9e45d9f9fe

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

In Computational Theory and Mathematics

In Industrial and Manufacturing Engineering

Citations in the corpus

Infill Optimization for Additive Manufacturing—Approaching Bone-Like Porous Structures (2016, methodology): “Regarding overhang avoidance, some progress has been made recently by embedding corresponding constraints into density-based topology optimization [52], [53], [54].”
The barriers to the progression of additive manufacture: perspectives from UK industry (2018, background): “Research literature in this area has focussed on optimisation of certain aspects such as support and internal structures with reference to manufacturing constraints (Gardan and Schneider, 2015; Gaynor and Guest, 2016; Li et al., 2016c; Mirzendehdel and Suresh, 2016; Morgan et al., 2016).”
Homogenization-based stiffness optimization and projection of 2D coated structures with orthotropic infill (2019, background): “Examples are geometric constraints to restrict the overhang angle (Langelaar, 2017; Qian, 2017; Gaynor and Guest, 2016; Allaire et al., 2017), and methods to restrict the length-scale of the design as well as to make them robust against manufacturing variations, see (Lazarov et al.”
Self-supporting structure design in additive manufacturing through explicit topology optimization (2017, methodology): “rresponding optimized structure is not symmetric and the value of the objective functional for this structure is 𝐼𝐼= 72.164. This nonsymmetric behavior is also consistent with the observation made in [23]. I- f, however, the print direction is changed to 𝒃𝒃𝑝𝑝= (1,0)⊤, the obtained optimized st”
Current and future trends in topology optimization for additive manufacturing (2018, methodology): “Gaynor and Guest (2016) realized the overhang-free design through an additional layer of design variable projection; see Fig.”
Shape optimization of a layer by layer mechanical constraint for additive manufacturing (2017, methodology): “Hitherto, ad hoc criteria, based on a minimum angle between the structural boundary and the horizontal directions, have been used to tackle this issue [14, 19, 20].”
Support Structures for Additive Manufacturing: A Review (2018, background): “Gaynor and Guest [93] attempted to more thoroughly integrate overhang constraints into the topology optimization methodology.”
Undercut and overhang angle control in topology optimization: A density gradient based integral approach (2017, methodology): “Recently maximum overhang angle in topology optimization is considered in [28, 29], using modified projection in the optimization scheme.”