Mapped Hole mesh controls

The Mapped Hole type of Mesh Control produces structured rows of elements around specified holes or loops. You can specify:

• The number of layers (rows) of structured elements that the software creates.

• The spacing of those elements around the edge of the hole.

The software tries to create the number of layers of elements that you specify. However, in some cases, the software may have to adjust this number. For example, the software may not be able to create the number of requested layers because of the constraints of the surrounding geometry.

If you select the Adjust Depth check box, the software automatically adjusts the Layer Depth value if the area around the hole is not large enough to accommodate the specified Layer Depth or Number of Layers. When you select the Adjust Depth option, the software decreases the specified Layer Depth size so that it can create at least one layer of elements around the hole.

Mapped Hole with insufficient space for the specified layer thickness	Mapped Hole with the layer thickness adjustment

Mapped Hole requirements

• You can create a Mapped Hole definition in a 2D free mesh of quadrilateral or triangular elements that you created with the 2D Mesh command. Mapped Hole definitions are supported in 2D free meshes that are created with both the Subdivision and Paver meshing methods.

• You can create a Mapped Hole mesh control to controls the distribution of elements around holes that are contained within a single surface only. If a hole spans multiple surfaces, the Mapped Hole option does not produce a structured mesh around those holes. Additionally, if you create Mapped Hole definitions around multiple holes that are very close to each other, the software may not be able to generate some or all of the requested number of layers.

Mapped Hole example

The following graphic shows the differences in a 2D mesh when a Mapped Hole type of Mesh Control is used.

• (1) shows the initial mesh with no mapped elements around the holes.

• (2) shows the updated 2D mesh after a Mapped Hole type of Mesh Control was defined around each of the four holes. The Mapped Hole definition specified that there should be 3 layers of structured elements and 8 elements around each hole.

Mapped Hole example

Geometry selection filtering

With the Mapped Hole type, when you select the Filter option, you can select an entire body or group of faces as the target geometry. The software then searches within the body or selected faces for the geometry that meets your specific criteria. For example, you can have the software select all the holes within a sheet body that have a minimum radius of 10 mm. You can also use the Allow Non Circular Holes option to control whether the software searches for non-circular shaped holes.

After you specify the criteria, you can use the Preview option to display the geometry that meets the specified criteria.

Where do I find it?

Application	Pre/Post
Prerequisite	An active FEM file
Command Finder	Mesh Control

How do I

Create a Mapped Hole mesh control

Quick links

Command reference

Pre/Post video examples

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Mapped Hole mesh controls, Simcenter 3D 2021.1 Series

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