Non-linear mechanical field reconstruction coupling recurrent neural networks with physics-informed graph neural networks
The proposed framework couples a Long Short-Term Memory (LSTM) network with a Physics-Informed Graph Neural Network (P-DivGNN) to reconstruct local stress fields in heterogeneous materials under complex, history-dependent loading. The LSTM captures the temporal response of the material, while the GNN uses this history to spatially map out where stresses occur at each time step.