To Create Lattice with Varied Density Based on Distance from References

Part Modeling > Part Modeling > Engineering Features > Lattice > To Create Lattice with Varied Density Based on Distance from References

1. Click Engineering >

Lattice. The Lattice tab opens.

2. Define the required parameters on the Lattice Region tab, the Cell Type tab, and the Cell Fill tab.

3. Click the Density tab, and then click

References.

4. Perform the following actions based on the type of lattice:

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Beams

Perform the following actions based on the cell type:

▪ Beam-based lattice with a cell type that is not stochastic

1. To define the cross section size below which lattice is not created, next to Cross section cutoff, type a value. The cross section cutoff value must be between the size of the cross section of the beam, as defined on the Cell Fill tab, and the size of the varied density, as defined on the Density tab.

2. To allow beams to have a varied cross section size, select Continuous variability. When this option is clear, each beam has its own straight cross section.

3. To create a new set that defines a volume region, under Variable Beams, click New set.

4. To define references around which the varied density lattice is created, click the References collector and select or define any of the following: a combination of surfaces, quilts, datum planes, edges, vertices, curves, curve ends, axes, points, and coordinate systems.

5. To define the distance from the reference where the lattice with varied density is created, next to Distance, type a value. The distance sets the size of the volume region around the reference you selected.

The shortest distance to the reference is measured, or if the reference is a datum plane, the shortest distance to an extension of the plane.

6. To define the cross section size of the beam on the reference, next to Target cross section size, type a value. The cross section of the beams varies between the value of Target cross section size on the Density tab, and the Cross section size value that is defined on the Cell Fill tab.

7. To set the rate of change for the density, next to Size change rate, type a value.

▪

Stochastic

1. To create a new set that defines a volume region, under Adaptive Distribution, click New set.

2. To define references around which the varied density lattice is created, click the References collector and select any of the following: a combination of surfaces, quilts, datum planes, edges, vertices, curves, curve ends, axes, points, and coordinate systems.

3. To define the distance from the reference where the lattice with varied density is created, next to Distance, type a value. The distance sets the size of the volume region around the reference you selected.

The shortest distance to the reference is measured, or if the reference is a datum plane, the shortest distance to an extension of the plane.

4. To set the density at the selected reference, next to Density ratio, type a value.

5. To set the rate of change of the density, next to Density change rate, type a value. When this option is set to 1, the rate of change is linear. When the value is smaller than 1, the rate is lower than linear. When the value is greater than 1, the rate is higher than linear.

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Formula Driven

1. To define the cutoff below which lattice is not created, next to Wall thickness cutoff, type a minimal value for wall thickness.

2. To create a new set that defines a volume region, underSet Settings, click New set.

3. To define the references that are used to create the varied wall thickness of a volume region, click the References collector and select any of the following: a combination of surfaces, quilts, datum planes, edges, vertices, curves, curve ends, axes, points, and coordinate systems.

4. To define the distance from the reference where the lattice with varied density is created, next to Distance, type a value. The distance determines the size of the volume region around the reference you selected.

The shortest distance to the reference is measured, or if the reference is a datum plane, the shortest distance to an extension of the plane.

5. Next to Target wall thickness type a value to define the thickness of the wall at the reference you specified.

6. To set the rate of change for the density, next to Size change rate, type a value. When this option is set to 1, the rate of change is linear. When the value is smaller than 1, the rate is lower than linear. When the value is greater than 1, the rate is higher than linear.