If one has a linear-elastic material in mind, one would assume this works for any kind of finite element simulations. In case of large rotations and large strains, "linear" is not unique. There are many different implementations of linear-elastic materials. Beside the mathematical details, a cube, rotated by 90° and stretched to a factor of 2, will show different deformations. You'll see a small-strain, Total-Lagrange (Saint-Venant Kirchhoff material) and the co-rotated framework as well as a compressible Neo-Hookean material model formulation.

Reminder: don't use small-strain linear-elastic material formulations in simulations where large rotations occur - just because the strains are "small".

All figures created by #felupe for simulation and #pyvista for plotting.

#python #computationalmechanics #scientificcomputing #numpy #fem #fea #opensource

I made a #streamlit app for a nonlinear #fea simulation of a deformable hyperelastic solid body. This uses #FElupe for the simulation and #pyvista / #stpyvista for showing the final result in your browser.

https://felupe-web.streamlit.app/

#computationalmechanics #scientificcomputing #fem #python #opensource #FiniteElementMethod

#Python #Pyvista

pyvista.Color — PyVista 0.44.1 documentation https://docs.pyvista.org/api/utilities/_autosummary/pyvista.color#pyvista.Color

Oh for christ's sake what is #pyvista doing here? Randomly moving the axis origins around when switching between rendering modes? How is one supposed to do #CAD like this? 🙄

I'm using pyvista to view the generated #sdfCAD models but shifting axes around is a pretty severe no-go for a 3D viewer. pyvista also recently started spitting out some weird vue2/vue3 errors... Are there any other good #STL viewers for #Jupyter?

#Python #codeCAD

Noticias sobre Python y Datos de la semana, episodio 69 🐍⚙️

En resumen: #HackathonSomosNLP, versiones nuevas de PyTorch e Ibis, convierte JupyterLab en un IDE de verdad, visualización 3D interactiva, y el futuro de la documentación en Python (según un servidor) https://astrojuanlu.substack.com/p/episodio-69 Apoya el noticiero suscribiéndote por correo 📬

#NoticieroPythonYDatos #JupyterLab #PyTorch #Ibis #PyVista #Sphinx #MkDocs #Python #PyData