When your upstream External Model source file includes Point Masses, an Imported folder appears beneath the Geometry folder when you open the file in Mechanical. This object is a simple group folder. It contains the child object: Point Masses. If the Point Masses are scoped to a node attached to the geometry, you can promote and/or copy them, otherwise, no promote and/or copy options are available.
Important: If your Imported Point Mass is connected to a body through an imported connection, i.e. Remote Connection, Constraint Equation, or Spring, Mechanical does not include the Imported Point Mass in any Rotational Velocity or Rotational Acceleration scoping.
Supported Analysis Types
Imported Point Masses are supported by the following analysis types:
Coupled Field Analyses
Harmonic Response
Modal
Static Structural
Transient Structural
Supported Source File Commands
The application imports the following source file data/commands as point masses:
CDB: Element MASS21 is processed.
If 2D, MASS and IZZ are supported.
If 3D, MASSX, IXX, IYY and IZZ are supported.
Rotary Inertia only if KEYOPT(3) = 0 or 3.
NASTRAN: The CONM2 command is processed. We process the complete command comprising of Node IDs, Coordinate System IDs, Mass Value, offset distances, and mass moments of inertia. Any defined orientation is processed via the nodes.
Note: If there are any non-zero offsets, you must set them to zero in order to proceed with the solution.
ABAQUS: Only the *ELEMENT, TYPE=MASS and *ELEMENT, TYPE=ROTARYI Point Mass elements are supported. The Mass Value is the only value obtained from the MASS command. All other *MASS command values are ignored. Any defined orientation is processed via the nodes.
Rotary Inertial and Orientation from *Rotary Inertia command are processed and all other data from *Rotary Inertia command are ignored.
Review the Point Mass object reference page as needed for additional details about the properties and use of Point Mass objects.