Hi to all,
I am trying to perform Finite Element simulations, including linear static and a non linear static analysis, across two different models. The geometries were meshed using the “Full Automatic Tetrahedralization”, with a second order mesh requested.
After various attempts at solving the problems, ending with errors from the solvers (both Code Aster and Calculix), and getting messages pointing to bad Jacobians, it is obvious that the problem is in the meshes, more specifically, the numbering of nodes.
This could or could not be related with the fact that the meshes are quadratic, but definitely is a problem with the algorithm, in my opinion.
My questions are:
- Am I right about the cause of the errors?
- Is it only me that have this problem? Is it a known bug?
- Is there a workaround besides meshing outside simscale and importing the mesh?