NTopo: Mesh-free Topology Optimization using Implicit Neural Representations - NeurIPS 2021

Recent advances in implicit neural representations show great promise when it comes to generating numerical solutions to partial differential equations. Compared to conventional alternatives, such representations employ parameterized neural networks to define, in a mesh-free manner, signals that are highly-detailed, contin- uous, and fully differentiable. In this work, we present a novel machine learning approach for topology optimization-an important class of inverse problems with high-dimensional parameter spaces and highly nonlinear objective landscapes. To effectively leverage neural representations in the context of mesh-free topology optimization, we use multilayer perceptrons to parameterize both density and dis- placement fields. Our experiments indicate that our method is highly competitive for minimizing structural compliance objectives, and it enables self-supervised learning of continuous solution spaces for topology optimization problems.
Jonas Zehnder
jzehnder.me/
Yue Li
liyuesolo.gith...
Stelian Coros
crl.ethz.ch/cor...
Bernhard Thomaszewski
n.ethz.ch/~bth...