I often find myself having to explain stress derivation from hyperelastic formulations to research students. And I also have to explain the difference between constrained/coupled/uncoupled formulations a lot.

So I've been creating an #opensource educational resource on this here:
https://github.com/Kevin-Mattheus-Moerman/NonlinearContinuumMechanics

It has now been extended with a #Pluto notebook showing the equations as well as a #Julialang numerical implementation.

I've also added the source for a fun companion presentation to show "the anatomy" of the Ogden hyperelastic formulation.