Just added a space to be able to propose a change!

[alishayegh]

A Lagrangian approach is assumed, which means that the advection/convection term disappears I don't think this is what Lagrangian approach means; for example, in a large deformation problem, if one takes the Eulerian solution approach, they cannot ignore the convection term, yet the final solution should be equivalent to that obtained through the Lagrangian approach.

[philipcardiff]

Hi @alishayegh, I am reviewing open issues. I think we can close this one. Large and small deformations can be equivalently viewed from either a Lagrangian or Eulerian perspective. From a Lagrangian perspective, no advection term exists (as we track the mass/particles), whereas an advection arises when adopting an Eulerian perspective as material flows past our observation region/point.

The text on the website certainly does not explain this in detail but, for me, it is not wrong (albeit it may be a bit simple). Nonetheless, feel free to suggest alternative text, if you prefer.