FESADev/phases/analysis-model-objects/step6.md

Step 6: load-base-interface

Read First

Read these files before editing:

• /AGENTS.md
• /docs/AGENT_RULES.md
• /docs/ARCHITECTURE.md
• /docs/implementation-plans/analysis-model-objects-implementation-plan.md
• /include/fesa/core/LoadDefinition.hpp

Task

Add load model base and nodal load object.

Allowed files:

• Create /include/fesa/load/Load.hpp
• Create /include/fesa/load/NodalLoad.hpp
• Create /src/load/NodalLoad.cpp
• Create /tests/load/load_base_test.cpp
• Modify /CMakeLists.txt

Required behavior:

• Load has virtual destructor and a load kind enum.
• NodalLoad derives from Load.
• Stores node id, DOF, and value.
• No global vector assembly in this phase.

Tests To Write First

Write /tests/load/load_base_test.cpp before production changes:

• Access NodalLoad through const Load&.
• Verify kind, node id, DOF, value.
• Verify deletion through std::unique_ptr<Load>.

Run targeted build and confirm RED.

Acceptance Criteria

Run:

python scripts/validate_workspace.py
ctest --test-dir build/msvc-debug --output-on-failure -C Debug -R model-object

Update step 6 status.

Do Not

• Do not assemble forces or apply time/load factors.