The following overview is based on using an imported mesh from the feeder_clamp model, found in the COMSOL Multiphysics Applications Libraries and shown in Figure 8-4.

To form a single domain, use a Join Entities () node, which operates on the domain level (that is, add All domains to the selection). As a result, you can obtain a mesh for the model with a single domain.

To remove all edges, use a Delete Entities () node, which operates on the edge level (that is, add All edges to the selection). As a result, you can obtain a mesh for the model with no edges or points.

To define a boundary that defines the contact between the feeder and the clamp, use a Cylinder () node that operates on the boundary level (that is, add All boundaries to the selection, and use 10.001 as a cylinder radius, 0 and -20 for top and bottom, (15, 0, 35) as position, and y-axis as the axis type).

To define two boundaries that define screw channels, use a Logical Expression () node, which operates on the boundary level (that is, add All boundaries to the selection and use (y+10)^2+(z-55)^2<=4 as the expression).

To create a boundary defining one of the washers used for the boundary loads of the model, use a Ball () node, which operates on the boundary level (use (5,-10, 55) as a ball center and 3.5 as a ball radius). The input boundary selection must be limited; otherwise, the ball operation also splits one of the cylinder boundaries, which was created by the Logical Expression node.

By creating a duplicate of the Ball node and modifying the ball center (set x to 5) you can create a boundary for the second washer.

To create the boundaries for the mounting holes, use a Box () node, which operates on the boundary level (use (0 - 30, -30 - 10, 0.1 - 4.9) as box limits and use the Some vertex condition).

Using the Create Vertex () node, it is possible to add an additional vertex in a specified location (use (30,-30, 0) as vertex coordinates as in Figure 8-10).