TOP3D_XL

This repository was created for the paper "Scalable 3D Topology Optimization with Matrix-free MATLAB Code" by Junpeng Wang, Niels Aage, Jun Wu, Ole Sigmund and Rüdiger Westermann, submitted to the journal "Structural and Multidisciplinary Optimization" in 2025.05

How to use it?

Interface (Details are provided at the beginning of the code as well):

TOP3D_XL(inputModel, consType, V0, nLoop, rMin, varargin);

Syntax 1:

%% Run Topology Optimization on the Cuboid Design Domain with Built-in Boundary Conditions
%% input volume: true(nely,nelx,nelz)
TOP3D_XL(true(50,100,50), 'GLOBAL', 0.12, 50, sqrt(3)); 

Syntax 2:

%% Run Porous Infill Optimization on the Cuboid Design Domain with Built-in Boundary Conditions
TOP3D_XL(true(50,100,50), 'LOCAL', 0.5, 300, sqrt(3), 6);

Syntax 3:

%% Run Topology Optimization on the External Design Domain Provided in *.TopVoxel
%% Download External Datasets (Femur, Molar, GEbracket): https://syncandshare.lrz.de/getlink/fiW6M69m5HoTUcH4T7wLKZ/ (until 2026.11.25)
TOP3D_XL('./data/Femur.TopVoxel', 'GLOBAL', 0.4, 50, sqrt(3));

Syntax 4:

%% Run Porous Infill Optimization on the External Design Domain Provided in *.TopVoxel
TOP3D_XL('./data/Femur.TopVoxel', 'LOCAL', 0.5, 300, sqrt(3), 6);