Add harmonix-opt (Harmony Search) as alternative optimizer — harmonix…#1
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Adds a complete Harmony Search optimisation example using the harmonix-opt
library as a drop-in replacement for the genetic algorithm in main.py.
The original FEM pipeline (Pre.py, Sol.py, Post.py) is completely unchanged.
Files added in harmonix_solution/:
main_harmonix.py
- Continuous design space, same constraints as original main.py
- Direct GA replacement (equal FEM budget: 5000 calls)
main_harmonix_chs.py
- Discrete EN 10210-2 CHS profile catalogue (50 profiles, S355 steel)
- Full Eurocode 3 checks: section class (§5.5.2), tension (§6.2.3),
buckling curve a (§6.3.1), SLS deflection L/300 (NA Table NA.1)
- Buckling lower bounds pre-computed analytically before optimisation —
physically infeasible profiles are excluded without any FEM call
benchmark_50run.py
- 50-run statistical comparison, equal FEM budget (5000 / method)
- Result: HS mean weight 5219 vs GA mean weight 6540 (−20.2%)
- Mann-Whitney U: p < 0.0001, effect size r = 0.861 (large)
- All 50 runs feasible for both methods
README_harmonix.md
- Usage, constraint table, example output, benchmark results
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…_solution/
Adds a complete Harmony Search optimisation example using the harmonix-opt library as a drop-in replacement for the genetic algorithm in main.py.
The original FEM pipeline (Pre.py, Sol.py, Post.py) is completely unchanged.
Files added in harmonix_solution/:
main_harmonix.py
- Continuous design space, same constraints as original main.py
- Direct GA replacement (equal FEM budget: 5000 calls)
main_harmonix_chs.py
- Discrete EN 10210-2 CHS profile catalogue (50 profiles, S355 steel)
- Full Eurocode 3 checks: section class (§5.5.2), tension (§6.2.3), buckling curve a (§6.3.1), SLS deflection L/300 (NA Table NA.1)
- Buckling lower bounds pre-computed analytically before optimisation — physically infeasible profiles are excluded without any FEM call
benchmark_50run.py
- 50-run statistical comparison, equal FEM budget (5000 / method)
- Result: HS mean weight 5219 vs GA mean weight 6540 (−20.2%)
- Mann-Whitney U: p < 0.0001, effect size r = 0.861 (large)
- All 50 runs feasible for both methods
README_harmonix.md
- Usage, constraint table, example output, benchmark results