Optimize Any Topology: A Foundation Model for Shape- and Resolution-Free Structural Topology Optimization

TL;DR

Optimize Any Topology (OAT) is a versatile foundation model that efficiently predicts structural layouts across various shapes, sizes, and constraints, significantly advancing the field of topology optimization with high accuracy and speed.

Contribution

We introduce OAT, a novel shape- and resolution-agnostic foundation model trained on a large dataset, enabling fast and generalizable topology optimization without fixed grid constraints.

Findings

OAT reduces mean compliance by up to 90% compared to prior models.

OAT achieves sub-1 second inference across diverse resolutions and aspect ratios.

OAT demonstrates strong generalization on unseen benchmarks.

Abstract

Structural topology optimization (TO) is central to engineering design but remains computationally intensive due to complex physics and hard constraints. Existing deep-learning methods are limited to fixed square grids, a few hand-coded boundary conditions, and post-hoc optimization, preventing general deployment. We introduce Optimize Any Topology (OAT), a foundation-model framework that directly predicts minimum-compliance layouts for arbitrary aspect ratios, resolutions, volume fractions, loads, and fixtures. OAT combines a resolution- and shape-agnostic autoencoder with an implicit neural-field decoder and a conditional latent-diffusion model trained on OpenTO, a new corpus of 2.2 million optimized structures covering 2 million unique boundary-condition configurations. On four public benchmarks and two challenging unseen tests, OAT lowers mean compliance up to 90% relative to the best prior models and delivers sub-1 second inference on a single GPU across resolutions from 64 x 64 to 256 x 256 and aspect ratios as high as 10:1. These results establish OAT as a general, fast, and resolution-free framework for physics-aware topology optimization and provide a large-scale dataset to spur further research in generative modeling for inverse design. Code & data can be found at https://github.com/ahnobari/OptimizeAnyTopology.