Interpolation procedure

Interpolation in between an existing mesh is used in different places in CalculiX:

The input to the interpolation procedure is a master mesh consisting of volumetric elements (no 1d-elements such as beams or 2d-elements such as shells) and results at the nodes of the mesh, and a slave “mesh” consisting of one or more nodes in which the results are to be interpolated. Notice that the slave mesh does not have to contain elements. The interpolation consists of the following steps:

In the next sections the different aspects of the procedure are analyzed in detail.