NINI
70 lines
2.4 KiB
Markdown
70 lines
2.4 KiB
Markdown
# Step 2: domain-model
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## Sprint Contract
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### Objective
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Implement immutable-ish Domain entities for Phase 1 input data: nodes, elements, sets, materials, shell sections, loads, boundaries, and steps.
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### Required Reading
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- /AGENTS.md
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- /PROGRESS.md
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- /PLAN.md
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- /docs/README.md
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- /docs/HARNESS_ENGINEERING.md
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- /docs/PRD.md
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- /docs/ARCHITECTURE.md
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- /docs/ADR.md
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- /docs/NUMERICAL_CONVENTIONS.md
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- /docs/ABAQUS_INPUT_SUBSET.md
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- /phases/1-linear-static-mitc4/step1.md
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### Scope
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- Add Domain-level value objects and containers preserving input ids and labels.
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- Support Phase 1 shell elements as Abaqus `TYPE=S4` mapped to FESA MITC4.
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- Represent node sets, element sets, linear elastic materials, shell sections, fixed boundary conditions, nodal loads, and linear static steps.
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- Provide lookup APIs and duplicate-id diagnostics without storing equation ids in entities.
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### Allowed Files
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- `include/**`
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- `src/**`
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- `tests/**`
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- `PLAN.md`
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- `PROGRESS.md`
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- `phases/1-linear-static-mitc4/index.json`
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### Explicit Non-Goals
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- Do not parse Abaqus files in this step.
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- Do not create `AnalysisModel`, `AnalysisState`, or `DofManager`.
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- Do not add support for S4R, pressure loads, nonzero prescribed displacement, Part/Assembly/Instance, dynamics, nonlinear steps, or thermal coupling.
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### Tests To Write First
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- Domain construction tests for nodes, elements, sets, materials, shell sections, loads, boundaries, and steps.
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- Duplicate id/name tests with diagnostics.
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- Lookup tests proving labels and ids are preserved.
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### Reference Artifacts
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- None.
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### Acceptance Commands
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```bash
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python scripts/validate_workspace.py
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```
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### Evaluator Checklist
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- Domain preserves model definition and is treated as immutable after construction.
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- Node and element objects do not own global equation numbers.
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- Phase 1 object set matches `docs/ABAQUS_INPUT_SUBSET.md`.
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- Tests cover duplicate and missing lookup behavior.
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### Handoff Requirements
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- Record changed files and validation in `PROGRESS.md`.
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- Update future tasks in `PLAN.md` only if Domain scope changes.
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- Update the matching phase index entry: use `completed` with a one-line `summary`, or `blocked` with `blocked_reason`, or `error` with `error_message`.
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## Verification
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1. Run the acceptance command.
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2. Inspect Domain APIs for architecture-boundary drift.
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## Do Not
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- Do not make Domain depend on solver adapters, analysis strategies, or result writers.
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