A computational method that optimally distributes material within a design space subject to loads and boundary conditions, producing organic, mass-minimized geometries.
TO solves: minimize compliance (maximize stiffness) subject to volume fraction constraint. Uses SIMP (Solid Isotropic Material with Penalization) method. Each voxel gets density 0–1; penalization drives to 0 or 1. Result is a structural skeleton carrying loads optimally along stress paths.
Widely used for AM brackets, prosthetics, and aerospace components. Tools: nTopology, Altair Inspire, Fusion 360 Generative, ANSYS Topology. After TO, interpret the result: add minimum wall thickness, smooth organic surfaces, verify with full FEA before printing.
TO output is not directly printable: it requires interpretation and remodeling. Minimum feature size constraints must be enforced manually. Without manufacturing constraints, TO may produce geometries that require heavy support or are impossible to print.
Related terms: Lattice Structure, DfAM (Design for Additive Manufacturing), Factor of Safety, Minimum Feature Size
| Field | engineering |
|---|---|
| Also called | topo-opt, generative design |
| Source | EDi Brain: rules-core |
Engineer, author of The Big Book of 3D Printing and additive manufacturing expert