Wind Turbine Structural Load Analysis Assistant
Analyze wind turbine structural loads using IEC 61400 standards with fatigue & extreme event asse...
What You Can Do
You can conduct rigorous structural load analyses for wind turbines by working through a systematic methodology that covers load identification, load case matrix development, fatigue damage calculations, and load combination verification. Claude helps you quantify aerodynamic, gravitational, operational, and environmental loads, then combines them into critical scenarios for design validation and certification audits.
Features
systematically catalog aerodynamic, gravitational, operational, and environmental loads affecting turbine structures
organize normal operation, grid faults, and extreme event scenarios per IEC 61400-1 standards
apply Miner's rule methodology to assess component fatigue life under cyclic loading
trace loads through tower, nacelle, drivetrain, and foundation to identify critical stress points
validate combined load cases against design criteria and safety factors
evaluate structural integrity under hurricanes, icing, seismic, and other extreme conditions
generate engineering-grade load analysis reports suitable for design reviews and certification bodies
quantify how rotor speed changes, pitch control modifications, or control strategy updates affect structural loads
Example Output
Example 1: Load Case Matrix for 15 MW Offshore Turbine
| Load Case | Wind Speed (m/s) | Sea State | Load Type | Tower Base Moment (MNm) | Fatigue Relevance |
|---|---|---|---|---|---|
| Power Production | 8–12 | Hs 2–4m | Cyclic | 45–120 | High |
| Extreme Wind Speed | 50 (1-hr) | Hs 8m | Extreme | 380 | Design Criterion |
| Grid Loss | 10 | Hs 3m | Transient | 210 | Medium |
| Parked Extreme | 52.5 (3-sec gust) | Hs 9m | Extreme | 420 | Design Criterion |
Example 2: Fatigue Damage Equivalent Load Summary
Component: Blade Root Flapwise
- Reference 10-minute load range (Hs 2m, Vhub 10 m/s): 8.5 MNm
- Damage equivalent load (DEL) at m=10: 12.3 MNm
- Annual damage cycles (Miner's rule): 0.034 (within 25-year fatigue target)
- Recommendation: Design fatigue load ≥ 12.5 MNm acceptable
Example 3: Load Path Analysis – Foundation Design
Vertical load sources contributing to foundation overturning moment:
- Aerodynamic thrust: 1,200 kN (dominant during extreme winds)
- Nacelle + rotor weight: 850 kN (constant gravity)
- Hydrodynamic wave loading: 350 kN (offshore)
- Combined extreme moment at mudline: 45 MNm (drives foundation embedment depth)
What's Included
- SKILL.md instruction file: detailed methodology for systematic structural load analysis
- IEC 61400-1 load case checklist: pre-configured normal operation, grid fault, and extreme event scenarios
- Load quantification template: spreadsheet framework for cataloging aerodynamic, gravitational, operational, and environmental loads
- Fatigue damage calculation worksheet: Miner's rule methodology and DEL computation for common components (blade, tower, drivetrain, foundation)
- Load combination matrix: structured format for organizing and verifying load case combinations against design criteria
Who It's For
- Wind turbine structural engineers — designing new platforms or conducting design verification
- Certification engineers — preparing load documentation for design review boards and certification bodies
- Field failure investigators — analyzing root causes of premature component failures through load path assessment
- Foundation design engineers — determining critical loads for offshore and onshore turbine foundations
- Technical leads at wind OEMs and component suppliers — managing load case inventories and design standard compliance
Best For
- New turbine platform load case development and design phase verification
- Fatigue-equivalent load (DEL) calculations for specific components or foundations
- Extreme weather scenario evaluation (hurricanes, icing, seismic events)
- Design review and certification audit documentation preparation
- Assessing structural impact of operational changes (rotor speed, pitch control strategy modifications)
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