Activity: Use subjective mesh sizing

Open the file FE_bearing.par.

Simulation models are delivered in the \Program Files\UDS\QY CAD 2022\Training\Simulation folder.

Create a study:

1. Choose Simulation tab→Study group→Material List→Stainless Steel.

   

2. Select New Study.

   

3. In the Create Study dialog box, choose the following:

   • Study type = Linear Static

     

   • Mesh type = Tetrahedral

     

   • Click OK.

Mesh the bearing:

1. Choose Simulation tab→Mesh group→Mesh.

   

2. Click the Mesh button.

   Note:

   • You can use the Mesh command without defining loads and constraints.

   • In the absence of loads and constraints, you cannot solve the study.

   The NX Nastran mesh processing starts and displays a progress meter.

   

After a short period of time, the part will display with a tetrahedral mesh.

Change the subjective mesh size:

For your previous mesh, you used the default mesh size, a value of 3 on a scale of 1 to 10.

1. Change the Subjective mesh by moving the slider to a value of 4.

2. Mesh the bearing again and see the increase in the number of elements.

   

3. Change this to a value of 7 using the slider.

4. Mesh the bearing again and see the increase in the number of elements.

   

   Note:

   • Note that each increase in the number of elements requires an increase in time to mesh the part.

   • An increase in the number of elements results in increased accuracy of the analysis; however, you must decide whether this improvement in accuracy is worth the additional processing time.

Close this file: