GGU-SLAB: "Diagonals" button
Optimisation of diagonals is implemented in order to create a numerically favourable FEM mesh, i.e. where possible, equilateral triangles. The effect of optimisation of diagonals can best be seen using an example:
Figure 2 Optimisation of diagonals
If an existing unfavourable diagonal cuts two different material areas, no optimisation takes place because this would alter the system.