General Fatigue library

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dkreuter johmue

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- 4 - Beta
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- OSI Approved :: Apache Software License
Operating System
- OS Independent
Programming Language
- Python :: 3

Project description

pyLife – a general library for fatigue and reliability

PyPI - Python Version

pyLife is an Open Source Python library for state of the art algorithms used in lifetime assessment of mechanical components subjected to fatigue.

Purpose of the project

This library was originally compiled at Bosch Research to collect algorithms needed by different in house software projects, that deal with lifetime prediction and material fatigue on a component level. In order to further extent and scrutinize it we decided to release it as Open Source. Read this article about pyLife's origin.

So we are welcoming collaboration not only from science and education but also from other commercial companies dealing with the topic. We commend this library to university teachers to use it for education purposes.

The company Viktor has set up a web application for Wöhler test analysis based on pyLife code.

Status

pyLife-2.1.x is the current release the you get by default. We are doing small improvements, in the pyLife-2.1.x branch (master) while developing the more vast features in the 2.2.x branch (develop).

The main new features of the 2.2.x branch is about FKM functionality. As that is quite a comprehensive addition we would need some time to get it right before we can release it as default release.

Once 2.2.x is released we will probably stick to a one branch development.

There are/will be the following subpackages:

stress everything related to stress calculation
- equivalent stress
- stress gradient calculation
- rainflow counting
- ...
strength everything related to strength calculation
- failure probability estimation
- S-N-calculations
- local strain concept: FKM guideline nonlinear
- ...
mesh FEM mesh related stuff
- stress gradients
- FEM-mapping
- hotspot detection
util all the more general utilities
- ...
materialdata analysis of material testing data
- Wöhler (SN-curve) data analysis
materiallaws modeling material behavior
- Ramberg Osgood
- Wöhler curves
vmap a interface to VMAP

License

pyLife is open-sourced under the Apache-2.0 license. See the LICENSE file for details.

For a list of other open source components included in pyLife, see the file 3rd-party-licenses.txt.

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dkreuter johmue

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Operating System
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Programming Language
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Release history Release notifications | RSS feed

2.2.0a8 pre-release

Oct 16, 2025

This version

2.2.0a7 pre-release

Sep 25, 2025

2.2.0a6 pre-release

Sep 19, 2025

2.2.0a5 pre-release

Sep 17, 2025

2.2.0a3 pre-release

Dec 9, 2024

2.2.0a2 pre-release

Oct 11, 2024

2.2.0a1 pre-release

Dec 12, 2023

2.1.4

Oct 21, 2025

2.1.4rc1 pre-release

Oct 21, 2025

2.1.3

Oct 30, 2024

2.1.3rc1 pre-release

Oct 30, 2024

2.1.2

Oct 10, 2024

2.1.1

Oct 2, 2024

2.1.1b2 pre-release

Aug 1, 2024

2.1.1a3 pre-release

Aug 1, 2024

2.1.1a1 pre-release

Aug 1, 2024

2.1.0

Dec 8, 2023

2.1.0rc2 pre-release

Dec 8, 2023

2.1.0rc1 pre-release

Dec 8, 2023

2.1.0b1 pre-release

Nov 27, 2023

2.0.4

Sep 1, 2023

2.0.3

Apr 14, 2023

2.0.2

Dec 13, 2022

2.0.1

Nov 10, 2022

2.0.0

Feb 22, 2022

2.0.0a4 pre-release

Nov 9, 2021

2.0.0a3 pre-release

Nov 5, 2021

2.0.0a2 pre-release

Oct 22, 2021

2.0.0a1 pre-release

Oct 22, 2021

1.1.4

Jun 24, 2021

1.1.3

Jun 16, 2021

1.1.2

Jun 11, 2021

1.1.1

Jun 10, 2021

1.1.0

May 28, 2021

1.0.3

Jan 22, 2021

1.0.2

Jan 14, 2021

1.0.1

Oct 29, 2020

1.0

Oct 19, 2020

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