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arXiv · 2504.13422

Equilibrium Conserving Neural Operators for Super-Resolution Learning

Vivek Oommen·Andreas E. Robertson·Daniel Diaz·Coleman Alleman·Zhen Zhang·Anthony D. Rollett·George E. Karniadakis·Rémi Dingreville
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Abstract

Neural surrogate solvers can estimate solutions to partial differential equations in physical problems more efficiently than standard numerical methods, but require extensive high-resolution training data. In this paper, we break this limitation; we introduce a framework for super-resolution learning in solid mechanics problems. Our approach allows one to train a high-resolution neural network using only low-resolution data. Our Equilibrium Conserving Operator (ECO) architecture embeds known physics directly into the network to make up for missing high-resolution information during training. We evaluate this ECO-based super-resolution framework that strongly enforces conservation-laws in the predicted solutions on two working examples: embedded pores in a homogenized matrix and randomly textured polycrystalline materials. ECO eliminates the reliance on high-fidelity data and reduces the upfront cost of data collection by two orders of magnitude, offering a robust pathway for resource-efficient surrogate modeling in materials modeling. ECO is readily generalizable to other physics-based problems.

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Vivek Oommen, Andreas E. Robertson, Daniel Diaz, Coleman Alleman, Zhen Zhang, Anthony D. Rollett, George E. Karniadakis, Rémi Dingreville. 2025-04-18. Equilibrium Conserving Neural Operators for Super-Resolution Learning. https://arxiv.org/abs/2504.13422

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