How to create a Mechanical region?
To create a Mechanical region, click the Mechanical regions node of the Data tree:
Figure 1. The New Mechanical region dialog box.
Then, in the New Mechanical region dialog box:
- Provide a name for the Mechanical region;
 - Select the type of the Mechanical region in the drop-down menu. Two
                        region types are available:
- Material region and
 - Air region (only useful in the context of free-shape optimization).
 
 - In the case of a Material region, also provide the following
                            Mechanical properties of the region:
- the Young modulus (MPa),
 - the Poisson ratio and
 - its Mass density (kg/m3).
 
 - Finally, inform the geometrical faces that integrate the Mechanical region in the List of application faces.