addVoid

Create void regions inside 3-D geometry

Since R2021a

Syntax

g3 = addVoid(g1,g2)

Description

g3 = addVoid(g1,g2) creates void regions inside g1 using all cells of g2. All cells of the geometry g2 must be contained inside one cell of the geometry g1. Ensure that the geometries do not have enclosed cavities and do not intersect one another.

Note

After modifying a geometry, always call generateMesh to ensure a proper mesh association with the new geometry.

Examples

Add Void Regions Inside Cube

Create and plot a geometry.

g1 = multicuboid(2,2,2,"Zoffset",-1);
pdegplot(g1,"CellLabels","on","FaceAlpha",0.5)

Import and plot another geometry.

g2 = importGeometry("DampingMounts.stl");
pdegplot(g2,"CellLabels","on","FaceAlpha",0.5)

Scale and move the second geometry to fit entirely within the cube g1.

g2 = scale(g2,[1/1500 1/1500 1/100]);
g2 = translate(g2,[-0.5 -0.5 -0.5]);

Plot the result.

pdegplot(g2,"CellLabels","on","FaceAlpha",0.5)

Create void regions inside the cube using the cells of the geometry g2. Plot the result.

g3 = addVoid(g1,g2);
pdegplot(g3,"CellLabels","on","FaceAlpha",0.4)

Input Arguments

g1 — 3-D geometry

fegeometry object | DiscreteGeometry object

3-D geometry, specified as an fegeometry object or a DiscreteGeometry object.

g2 — 3-D geometry

fegeometry object | DiscreteGeometry object

3-D geometry, specified as an fegeometry object or a DiscreteGeometry object.

Output Arguments

g3 — Resulting 3-D geometry

fegeometry object | DiscreteGeometry object

Resulting 3-D geometry, returned as an fegeometry object or a DiscreteGeometry object. If both g1 and g2 are DiscreteGeometry objects, the resulting geometry g3 is also a DiscreteGeometry object. Otherwise, it is an fegeometry object.

Version History

Introduced in R2021a

R2023a: Finite element model

addVoid now accepts geometries specified by fegeometry objects.