ffpack 0.2.0

Fatigue and fracture package

FFPACK - Fatigue and Fracture PACKage

Purpose

FFPACK ( Fatigue and Fracture PACKage ) is an open-source Python library for fatigue and fracture analysis. It supports load cycle counting with ASTM methods, load sequence generators, fatigue damage evaluations, etc. A lot of features are under active development. FFPACK is designed to help engineers analyze fatigue and fracture behavior in engineering practice.

Installation

FFPACK can be installed via PyPI:

pip install ffpack

Status

FFPACK is currently under active development.

Contents

• Fatigue damage rule

  • Palmgren-miner damage rule
    • Naive Palmgren-miner damage rule
    • Classic Palmgren-miner damage rule

• Load cycle counting

  • ASTM
    • ASTM level crossing counting
    • ASTM peak counting
    • ASTM simple range counting
    • ASTM rainflow counting
  • Rychlik
    • Rychlik rainflow Counting

• Load sequence generator

  • Random walk
    • Uniform random walk
  • Autoregressive model
    • Normal autoregressive model

• Utility methods

  • Cycle counting aggregation
  • Fitter for SN curve
  • Sequence peak and valleys
  • Sequence degitization

Document

You can find a complete documentation for setting up FFPACK at the Read the Docs site.