*STLM
i1, i2, i3, r1
i5, i6, i7, r2
...
i1, i5: i*4: Configuration id: 1= part, 2 = build plate, 3 = support structure
i2, i6: i*4: PRM number
i3, i7: i*4: Material ID number
r1, t2: r*8: Volume fraction
This card assigns structure type, PRM file, material id, and volume fraction. The configuration id number specifies what type of body the imported STL is, build part or support structure. The PRM number allows multiple PRM files to be used, which allows for modeling using different parameters on different parts. This number should correspond to the location in the list provided in *PBPF. The material id set the material properties for each STL component using the values in *MATI.
Using a build plate STL allows for simulations to capture the exact geometry of the substrate used during powder bed fusion.
Support structure volume fraction is calculated by dividing the original support structure volume by the homogenized (also known as block type, solid volume, or shrink-wrapped) support structure. The volume fraction is used to scale properties for support structure STL files, using a value of 0 to 1. Homogenized lattice geometries can be modeled similarly using a volume fraction equal to the lattice volume divided by the original non-lattice part volume. The volume fraction should be set to 1 for part files. When using homogenized support or lattice STL files, adjust the volume fraction so that it matches the ratio of lattice structure volume built to the total volume that the support structure occupies.
Required card: *STLF