Dear CalculiX users,
I would like to draw your attention to a new feature in version 2.17 called mesh refinement. It allows to refine tetrahedral meshes based on some solution field, e.g. the displacements, stresses or error estimator. If the *refine mesh card occurs (cf. Manual) in any step in the input deck, the refinement is done and the whole calculation is restarted automatically. Please look at the test examples, e.g. circ10p.inp. It works for linear and quadratic tetrahedral meshes. So far, it was only tested on *static procedures.