About Lattices

Lattice Commands

The following two commands are available in Lattice Design for lattice creation:

Lattice Struts : creates the visualization of the lattices with the selected visualization mode, in a separate body.
Note: In the tree, under the Lattice.x feature, the volume parameter displayed is approximate.
Lattice Geometry : creates the actual lattice geometry from the visualization created using the Lattice Struts command.

The following two types of lattice are available for selection:

Rectangular : A rectangular lattice is a regular 3D pattern, connected along three noncollinear directions with a constant step size in each direction. In most cases, the directions are always perpendicular to each other.
Cylindrical : A cylindrical lattice is a 3D pattern, connected along two noncollinear directions:
For the cylindrical lattices, a reference axis needs to be defined. Apart from the axis, you can specify the following axis options:
- Neutral radius: It is the distance from the axis where the actual length or the instantiated cells are close to the specified cell.
- Minimum bar length: This is the minimum permissible size of a cell. The cells with length shorter than this value are not created.

The following three visualization modes are available for selection:

Cavity: displays the lattice area cavity with the selected lattice cell texture.
Wireframe: generates the lattices in the form of wireframes inside the lattice area.
By default, this mode is selected.
Bars: generates the lattices in the form of bars inside the lattice area.

The following advanced options are available for modifying the lattice design:

Decimation Sag: simplifies the tessellation of a polyhedral object to reduce the number of bars and triangles.

Table 1. Decimation Sag Result
Decimation Sag=0.5mm	Decimation sag=2mm

Smoothing Value: improves the smoothness of the intersection of the bars at the nodes. The smoothness increases with the value.

Table 2. Smoothing Result
Smoothing Value=0	Smoothing Value=10