Closed Ziemnono closed 1 year ago
This difference is normal given the fact that the elements use different interpolation schemes. In FEniCS, the Serendipity element (20 dofs https://defelement.com/elements/serendipity.html) are using integral over edges for second quadratic elements, while that is on a vertex in Caribou. But the solution is the same for the displacement , just the R and K matrices are not the same.
We observed a remarkable difference in stiffness matrix between Caribou and FEniCS. @Ziemnono provides Gauss points for FEniCS.