---
title: "SolidsPy: 2D-Finite Element Analysis with Python"
---
[](https://pypi.python.org/pypi/continuum_mechanics)
[](https://solidspy.readthedocs.io/en/latest/)
[](https://pypistats.org/packages/solidspy)
[](https://zenodo.org/badge/latestdoi/48294591)
A simple finite element analysis code for 2D elasticity problems. The
code uses as input simple-to-create text files defining a model in terms
of nodal, element, material and load data.
- Documentation: <http://solidspy.readthedocs.io>
- GitHub: <https://github.com/AppliedMechanics-EAFIT/SolidsPy>
- PyPI: <https://pypi.org/project/solidspy/>
- Free and open source software: [MIT
license](http://en.wikipedia.org/wiki/MIT_License)
# Features
- It is based on an open-source environment.
- It is easy to use.
- The code allows to find displacement, strain and stress solutions
for arbitrary two-dimensional domains discretized into finite
elements and subject to point loads.
- The code is organized in independent modules for pre-processing,
assembly and post-processing allowing the user to easily modify it
or add features like new elements or analyses pipelines.
- It was created with academic and research purposes.
- It has been used to tech the following courses:
- Computational Modeling.
- Introduction to the Finite Element Methods.
# Installation
The code is written in Python and it depends on `numpy`, and `scipy`
and. It has been tested under Windows, Mac, Linux and Android.
To install *SolidsPy* open a terminal and type:
pip install solidspy
To specify through a GUI the folder where the input files are stored you
will need to install
[easygui](http://easygui.readthedocs.org/en/master/).
To easily generate the required SolidsPy text files out of a
[Gmsh](http://gmsh.info/) model you will need
[meshio](https://github.com/nschloe/meshio).
These two can be installed with:
pip install easygui
pip install meshio
# How to run a simple model
For further explanation check the
[docs](http://solidspy.readthedocs.io/en/latest/).
Let\'s suppose that we have a simple model represented by the following
files (see [tutorials/square
example](http://solidspy.readthedocs.io/en/latest/tutorials/square_example.html)
for further explanation).
- `nodes.txt`
```{=html}
<!-- -->
```
0 0.00 0.00 0 -1
1 2.00 0.00 0 -1
2 2.00 2.00 0 0
3 0.00 2.00 0 0
4 1.00 0.00 -1 -1
5 2.00 1.00 0 0
6 1.00 2.00 0 0
7 0.00 1.00 0 0
8 1.00 1.00 0 0
- `eles.txt`
```{=html}
<!-- -->
```
0 1 0 0 4 8 7
1 1 0 4 1 5 8
2 1 0 7 8 6 3
3 1 0 8 5 2 6
- `mater.txt`
```{=html}
<!-- -->
```
1.0 0.3
- `loads.txt`
```{=html}
<!-- -->
```
3 0.0 1.0
6 0.0 2.0
2 0.0 1.0
Run it in Python as follows:
``` python
import matplotlib.pyplot as plt # load matplotlib
from solidspy import solids_GUI # import our package
disp = solids_GUI() # run the Finite Element Analysis
plt.show() # plot contours
```
For Mac users it is suggested to use an IPython console to run the
example.
# License
This project is licensed under the [MIT
license](http://en.wikipedia.org/wiki/MIT_License). The documents are
licensed under [Creative Commons Attribution
License](http://creativecommons.org/licenses/by/4.0/).
# Citation
To cite SolidsPy in publications use
> Nicolás Guarín-Zapata, Juan Gomez (2020). SolidsPy: Version 1.0.16
> (Version v1.0.16). Zenodo. <http://doi.org/10.5281/zenodo.4029270>
A BibTeX entry for LaTeX users is
``` bibtex
@software{solidspy,
title = {SolidsPy: 2D-Finite Element Analysis with Python},
version = {1.0.16},
author = {Guarín-Zapata, Nicolás and Gómez, Juan},
year = 2020,
keywords = {Python, Finite elements, Scientific computing, Computational mechanics},
abstract = {SolidsPy is a simple finite element analysis code for
2D elasticity problems. The code uses as input simple-to-create text
files defining a model in terms of nodal, element, material and
load data.},
url = {https://github.com/AppliedMechanics-EAFIT/SolidsPy},
doi = {http://doi.org/10.5281/zenodo.4029270}
}
```
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