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Creating A Solid Mesh: Exercise

This document provides instructions for creating a solid mesh from a gear surface model using HyperMesh. It involves splitting the solid into mappable regions by creating planes using temporary nodes. First, a solid is created from the enclosing surfaces. Then nodes are placed at circle centers to define splitting planes. One node is duplicated and rotated to create two planes splitting off 1/6th of the solid for meshing. The solid is then trimmed using these planes to create mappable regions for meshing.

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Gopal Vamssi
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62 views4 pages

Creating A Solid Mesh: Exercise

This document provides instructions for creating a solid mesh from a gear surface model using HyperMesh. It involves splitting the solid into mappable regions by creating planes using temporary nodes. First, a solid is created from the enclosing surfaces. Then nodes are placed at circle centers to define splitting planes. One node is duplicated and rotated to create two planes splitting off 1/6th of the solid for meshing. The solid is then trimmed using these planes to create mappable regions for meshing.

Uploaded by

Gopal Vamssi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Exercise: Creating a Solid Mesh

This exercise uses the model file, model_gear.hm. This exercise illustrates how to
create a solid mesh by first splitting the solid into mappable regions and then use the
Solid Map panel.

Step 1: Retrieve and review model file.


1. Open the model_gear.hm file.

The model consists of a surface geometry of a gear. Because the surfaces enclose a
volume, a solid can be created Notice that the model can be simplified by only working
with 1/6th of the model. The solid needs to be split into mappable regions and a shell
mesh can also be created as a guide for the solid mesh.
Step 2: Create a solid from surfaces that enclose a volume
1. Using the main menu, select Geometry > Create > Solids > Bounding Surfaces.

Because the surfaces enclose a single volume, a solid can be created.


2. Activate Auto select solid surfaces.
This allows us to select only one surface and HyperMesh will select the remaining
surfaces that enclose the volume.
3. Click on surfs and then select one of the surfaces in the graphics area.
4. Select create.
Once create is selected, a solid is created.

Notice that the solid is colored green, as that is the 3D Topology color for a solid.
Step 3: Split the solid into a repeatable region
1. Temporary nodes need to be created to help define the planes where the splitting will
occur. To create these nodes, select Geometry > Create > Nodes > Arc Center.
This allows us to create temporary nodes at center of the lines in the model.

2. Click on lines and then select the line indicated in the image below.

3. Select create. Notice that a node is created at the circle center of the selected line.
4. Repeat substeps 1-3 to create a node at the circle center of the two lines indicated in
the image below.

This results in the following nodes being created:


5. Next the node in the center of the smaller circle needs to be duplicated and rotate +
and 30 degrees to allow us to define two planes and cut a 1/6 portion of the model.
Select Geometry > Rotate > Nodes from the main menu to enter the Rotate panel.

6. Select the node in the center of the small hole in the graphics area and then in the
Rotate panel select nodes >> duplicate.
7 Select the x-axis as the axis to rotate about and then click on B and select one of
the nodes in the center of the model.

8. Set the angle to 30 and then click on rotate + to rotate the node 30 degrees.
9. Repeat substeps 6-8, this time selecting rotate to rotate the node 30 degrees in
the opposite direction.
10. Select Geometry > Edit > Solids > Trim with Plane/Surfaces to enter the Solid
Edit panel.

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