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Computes mass properties for the current model using densities of materials assigned to its the components.
The density values used for the mass property calculations are taken from materials defined by the Material property of the components and subcomponents, which can be either inherited from the main component of the assembly or set explicitly. The density of the main component is defined by the materials set in the Material field in the Mechanical Browser dialog. If a material does not have an assigned density, or its density is less or equal to zero, an error message displays, and the mass properties will not be computed. All materials involved in the assembly must have non-zero non-negative densities.
Accessing the Command
command bar: bmmassprop
menu bar: Assembly | Mass Properties
toolbar: Assembly | Mass Properties
ribbon:
- Assembly | Inquire | Mass Properties
- Home | Assembly | Mass Properties
: bmmassprop
Prompts you in the command bar:
Select 3D solids and subcomponents or [Entire model] <Entire model>: (Select an item.)
Entities in set: 1
Select 3D solids and subcomponents or [Entire model] <Entire model>: (Select more items or right click.)
Reports in the Prompt History window:
---------------- Component ----------------
Mass: 17.61 kg
Volume: 6522.94 cm³
Centroid: X= 22.59 mm Y= 235.71 mm Z= 201.09 mm
Moments of inertia: X= 2.30 kg·m² Y= 0.95 kg·m² Z= 1.39 kg·m²
Products of inertia:
XY: 0.09 kg·m²
YZ: 0.87 kg·m²
ZX: 0.11 kg·m²
Radii of gyration: X= 361.23 mm Y= 231.76 mm Z= 281.19 mm
Principal moments and X-Y-Z directions about centroid:
I: 0.22 kg·m² along X= -0.0022 Y= 0.9819 Z= 0.1891
J: 0.41 kg·m² along X= 0.1346 Y= -0.1871 Z= 0.9731
K: 0.61 kg·m² along X= 0.9909 Y= 0.0276 Z= -0.1318
Keep UCS aligned with principal moment axes? [Yes/No] <No>: (Press Enter or right click to keep the current UCS)
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NOTE |
BmMassProp will format the values of mass, volume and linear nature with their corresponding units only if the PROPUNITS system variable has the corresponding bits set to 1, or the corresponding flag in the Settings dialog for the Property units field is checked. See To set the Mass Units. |
Command Options
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Option |
Description |
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Keep UCS aligned with principal moment axes? Yes / No |
Yes: Aligns the UCS with the principal moment axes.
No: Keeps the current UCS. |
Related Commands
BmBom - inserts a Bill of Materials (BOM) table in the current drawing.
MechanicalBrowserOpen - displays the Mechanical Browser.
