# Fatigue Analysis

> Fatigue analysis for offshore structures including S-N curves, rainflow counting, Miner's rule, and DNV standards

- Skill: `vamseeachanta/fatigue-analysis` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/fatigue-analysis`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/fatigue-analysis/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/fatigue-analysis

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# Fatigue Analysis

## When to Use This Skill

Use fatigue analysis when:
- **Mooring line fatigue** - Calculate fatigue life of mooring components
- **Riser fatigue** - Analyze fatigue damage in flexible and rigid risers
- **Structural fatigue** - Assess fatigue in hull, joints, connections
- **S-N curve analysis** - Apply appropriate fatigue curves
- **Rainflow counting** - Process stress/load time series
- **Miner's rule** - Cumulative damage calculation
- **Fatigue design** - Size components for target life

## Resources

- **DNV-RP-C203**: Fatigue Design of Offshore Steel Structures
- **DNV-OS-E301**: Position Mooring (Section 7: Fatigue)
- **API RP 2SK**: Design and Analysis of Stationkeeping Systems for Floating Structures
- **ASTM E1049**: Standard Practices for Cycle Counting in Fatigue Analysis
- **BS 7608**: Code of Practice for Fatigue Design and Assessment of Steel Structures

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**Use this skill for all fatigue analysis in DigitalModel!**

## Sub-Skills

- [1. S-N Curve Fundamentals](1-s-n-curve-fundamentals/SKILL.md)
- [2. Rainflow Counting (+1)](2-rainflow-counting/SKILL.md)
- [4. Spectral Fatigue Analysis (+1)](4-spectral-fatigue-analysis/SKILL.md)
- [Example 1: Complete Fatigue Assessment](example-1-complete-fatigue-assessment/SKILL.md)