Add universal material subroutine by Peirlinck et al.

[termi-official]

On automated model discovery and a universal material subroutine for hyperelastic materials

[marinlauber]

Hi @termi-official,

Mathias @mpeirlinck and I are interested in implementing this 😎, we will most likely do that as a standalone package that can be used in both Ferrite.jl and Thunderbolt (or any other Julia FEA code, really).

I'll let you know how it's going!

[termi-official]

Hi Martin and welcome to the community! Glad to see you guys here. :)

I will start moving some issues in Thunderbolt soon to other subpackages, as I am in the processs of overhauling the internals and separating them in packages which are responsible for single things. The universal routines should probably be build on top of https://github.com/termi-official/FerriteOperators.jl , which will be the new foundation of Thunderbolt soon, or just on vanilla Ferrite . Should also be straightforward to do. I will make a PR soon to Thunderbolt which replaces the operators here in Thunderbolt with the new overhauled system in the referenced package.

[marinlauber]

Sounds good! I'll implement it and then see where it best fits.