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Exudyn
A flexible multibody dynamics systems simulation code with Python and C++
Exudyn version = 1.9.0 (Krall)
If you like using Exudyn, please add a star on github and follow us on
Twitter @RExudyn <https://twitter.com/RExudyn>_ !
Update on Exudyn V1.9.0: newer examples use exudyn.graphics instead of GraphicsData functions. The old models are backwards-compatible, but the new updated examples and test models require version 1.8.52 or newer! FEM now uses internally in mass and stiffness matrices the scipy sparse csr matrices, check also your models for that! Load/save in FEM does not work with NumPy 2.x versions!
NOTE: NumPy switched to version 2.0 or greater which causes big troubles when mixing with older packages. Try to use numpy<2.0 which should keep you safe for the moment. Usual error messages are: A module that was compiled using NumPy 1.x cannot be run in NumPy 2.1.2 as it may crash. To support both 1.x and 2.x versions of NumPy, modules must be compiled with NumPy 2.0. Some module may need to rebuild instead e.g. with 'pybind11>=2.12'
theDoc.pdf <https://github.com/jgerstmayr/EXUDYN/blob/master/docs/theDoc/theDoc.pdf>_ )NGsolve <https://github.com/NGSolve/ngsolve>, OpenAI <https://github.com/openai>, OpenAI gym <https://github.com/openai/gym>, Robotics Toolbox (Peter Corke) <https://github.com/petercorke/robotics-toolbox-python>, Pybind11 <https://github.com/pybind/pybind11>_.. |pic1| image:: docs/demo/screenshots/pistonEngine.gif :width: 200
.. |pic2| image:: docs/demo/screenshots/hydraulic2arm.gif :width: 200
.. |pic3| image:: docs/demo/screenshots/particles2M.gif :width: 120
.. |pic4| image:: docs/demo/screenshots/shaftGear.png :width: 160
.. |pic5| image:: docs/demo/screenshots/rotor_runup_plot3.png :width: 190
.. |pic6| image:: docs/theDoc/figures/DrawSystemGraphExample.png :width: 240
|pic1| |pic2| |pic3| |pic4| |pic5| |pic6|
How to cite:
https://doi.org/10.1007/s11044-023-09937-1 <https://doi.org/10.1007/s11044-023-09937-1>_Due to limitations for complex formulas, images and references in .rst files, some (small) details are only available in theDoc.pdf, see the github page of Exudyn <https://github.com/jgerstmayr/EXUDYN/blob/master/docs/theDoc/theDoc.pdf>_! There may also be some conversion errors in the auto-generated html pages.
For license, see LICENSE.txt in the root github folder on github!
In addition to the tutorial in the documentation, many ( 250+ ) examples can be downloaded on github under main/pythonDev/Examples and main/pythonDev/TestModels . They are also on ReadTheDocs.
Note that ChatGPT and other large language models know Exudyn quite well. They are able to build parts of your code or even full models, see https://doi.org/10.1007/s11044-023-09962-0 <https://doi.org/10.1007/s11044-023-09962-0>_
Tutorial videos ( new Feb 2024 )can be found in the youtube channel of Exudyn <https://www.youtube.com/playlist?list=PLZduTa9mdcmOh5KVUqatD9GzVg_jtl6fx>_ !
Enjoy the Python library for multibody dynamics modeling, simulation, creating large scale systems, parameterized systems, component mode synthesis, optimization, ...
Changes can be tracked in the Issue tracker, see Github pages and Read the Docs.
\ FOR FURTHER INFORMATION see Exudyn Github pages <https://jgerstmayr.github.io/EXUDYN>\ , Read the Docs <https://exudyn.readthedocs.io/> and for details (incl. equations) see theDoc.pdf <https://github.com/jgerstmayr/EXUDYN/blob/master/docs/theDoc/theDoc.pdf>_ !!!