Anto01
0ce9ddf3e2
- Add DEVELOPMENT_ROADMAP.md with 7-phase plan for LLM-driven optimization - Phase 1: Plugin system with lifecycle hooks - Phase 2: Natural language configuration interface - Phase 3: Dynamic code generation for custom objectives - Phase 4: Intelligent analysis and decision support - Phase 5: Automated HTML/PDF reporting - Phase 6: NX MCP server integration - Phase 7: Self-improving feature registry - Update README.md to reflect LLM-native philosophy - Emphasize natural language workflows - Link to development roadmap - Update architecture diagrams - Add future capability examples - Reorganize documentation structure - Move old dev docs to docs/archive/ - Clean up root directory - Preserve all working optimization engine code This sets the foundation for transforming Atomizer into an AI-powered engineering assistant that can autonomously configure optimizations, generate custom analysis code, and provide intelligent recommendations.
2.5 KiB
2.5 KiB
Testing the Stress Extraction Fix
Issue Fixed
Previously, stress extraction was returning 0.0 MPa instead of the expected ~122.91 MPa.
Root Cause: For solid elements (CHEXA, CTETRA, CPENTA), von Mises stress is at index 9, not the last column.
Fix Applied: Modified op2_extractor_example.py to check element type and use correct index.
How to Test
1. Activate your test environment
conda activate test_env
2. Run the verification script
python examples/test_stress_fix.py
Expected Output
============================================================
STRESS EXTRACTION FIX VERIFICATION
============================================================
--- Displacement (baseline test) ---
Max displacement: 0.315xxx mm
Node ID: xxx
OK Displacement extractor working
--- Stress (FIXED - should show ~122.91 MPa) ---
Max von Mises: 122.91 MPa
Element ID: 79
Element type: chexa
SUCCESS! Stress extraction fixed!
Expected: ~122.91 MPa
Got: 122.91 MPa
============================================================
Alternative: Test All Extractors
python optimization_engine/result_extractors/extractors.py examples/bracket/bracket_sim1-solution_1.op2
If Successful, Commit the Fix
git add optimization_engine/result_extractors/op2_extractor_example.py
git commit -m "fix: Correct von Mises stress extraction for solid elements (CHEXA)
- Use index 9 for solid elements (CHEXA, CTETRA, CPENTA)
- Keep last column for shell elements (CQUAD4, CTRIA3)
- Fixes stress extraction returning 0.0 instead of actual values (122.91 MPa)"
git push origin main
Technical Details
pyNastran OP2 Data Structure for Solid Elements
- Shape:
[itime, nnodes, 10] - The 10 values are:
[oxx, oyy, ozz, txy, tyz, txz, o1, o2, o3, von_mises] 0 1 2 3 4 5 6 7 8 9 - Von Mises is at index 9
Code Change
# BEFORE (WRONG):
stresses = stress_data.data[0, :, -1] # Last column - WRONG for CHEXA!
# AFTER (CORRECT):
if table_name in ['chexa_stress', 'ctetra_stress', 'cpenta_stress']:
# Solid elements: von Mises at index 9
stresses = stress_data.data[0, :, 9]
else:
# Shell elements: von Mises at last column
stresses = stress_data.data[0, :, -1]
Files Modified
- optimization_engine/result_extractors/op2_extractor_example.py - Lines 103-112