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Add multiaxial OOD v2 data, six neural models, and FE validation
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Start here: AgentFEM Material Loading Memory v1

This repository is a research handoff, not only a file archive. It contains the published dataset, the exact generation configuration, reusable readers, reference baselines, numerical tests, quality evidence and a concrete route for extending the work into a research article.

Choose your route

1. Use the data or train a new model

You do not need AgentFEM. Create the lightweight environment and verify the download:

conda env create -f environment-use.yml
conda activate agentfem-t2-use
bash reproduce_t2_v1.sh verify

Start with src/load_t2_material_loading_memory.py. The current HDF5 data can be used directly for GRU, LSTM, transformer, state-space or operator-learning experiments.

2. Reproduce the published baseline

bash reproduce_t2_v1.sh baseline

This verifies the data and retrains the pointwise MLP and history-aware GRU. The published reference metrics are in artifacts/t2_material_loading_memory_v1/baseline_metrics.json.

3. Regenerate the physics data

Use environment-reproduce.yml, which installs FEniCSx and the exact AgentFEM commit used for v1:

conda env create -f environment-reproduce.yml
conda activate agentfem-t2-reproduce
bash reproduce_t2_v1.sh design
bash reproduce_t2_v1.sh full

Full regeneration is deterministic but rewrites generated shards and baseline artifacts in the working copy. See REPRODUCE.md before running it.

What is already established

  • 1,008 complete trajectories, not 121,968 independent frames.
  • Two explicitly labelled constitutive models: J2 linear isotropic hardening and Chaboche combined hardening.
  • Six balanced proportional loading-path families.
  • Complete-trajectory train/validation/test splits with no frame leakage.
  • Numerical consistency, analytical, refinement and checksum evidence.
  • A strong history-aware baseline and a deliberately history-blind control.

What remains for a strong paper

The current release is a verified foundation, not the full paper claim. The recommended first paper studies generalization of learned path-dependent constitutive models. Its priority additions are true non-proportional multiaxial paths, physically meaningful out-of-distribution splits, physics-aware metrics, stronger sequence-model comparisons and deployment in a small structural finite-element example. See PAPER_ROADMAP.md.

Source of truth and citation

When extending the dataset, preserve trajectory-level grouping, units, model labels, random seeds, quality failures and the original v1 test set. Record a new schema or dataset version whenever fields or physical scope change.