- Using the face with the fewest amount of cells as the master face is computationally cheaper
- If there are multiple components with different materials, the surface with a hard solid should be the master surface.
- However, if the materials are the same, check the surface geometry to see if the geometry is rounded or flat. The flat surface should be applied as the master in this case.
For more information on how to identify Master and Slave surfaces in FEA studies visit the SimScale CAE Forum.