Fatigue Analysis

---
name: fatigue-analysis
version: 1.0.0
description: Fatigue analysis for offshore structures including S-N curves, rainflow
  counting, Miner's rule, and DNV standards
type: reference
author: workspace-hub
category: engineering
tags:
- fatigue
- s-n-curve
- rainflow-counting
- miners-rule
- dnv
- mooring-fatigue
- structural-fatigue
platforms:
- engineering
capabilities: []
requires: []
scripts_exempt: true
---

# 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

---

**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)