Review Mass Summary

Review details about Mass, Center of Gravity (Cog) and Inertia of your model.

  1. From the menu bar, click Tools > Mass Details and select one of the following:
    • Choose Mass only to calculate only the mass of the model.
    • Choose Mass, Cog and Inertia to calculate the mass, center of gravity, and inertias.

    Calculations are performed, and the Mass summary dialog opens.

    Individual entity details can be reviewed in a tabular format from the browser area, and global values of the whole model for Mass, Center of Gravity (Cog) and Inertia can be reviewed in the lower part of the dialog.

  2. Optional: Export the results to a CSV or HTML file by right-clicking in the browser and selecting Export > <file format> from the context menu.
Tip:
  • Manage the columns that are visible in the browser by right-clicking on a column header and selecting the columns to display.
  • Turn the display of entities ON/OFF in the browser and graphics window using the Show, Hide, Isolate, and Reverse options available in the right-click context menu.
  • Review only the selected entities, and make all other entities transparent using the Review option available in the right-click context menu.


Figure 1. Summary of Mass

Supported Mass Values

Mass values supported in the Mass Summary dialog.

Structural Mass
Mass of the component defined by the mesh volume and material density.
Non Structural Mass
Mass added on the component, provided by following keywords:
LS-DYNA
*ELEMENT_MASS_PART
*ELEMENT_MASS_PART_SET
MAREA defined in *SECTION_SHELL
NSM defined in *SECTION_BEAM
Radioss
/ADMAS defined on PART
Lumped Mass
Nodal distributed mass provided by following keywords:
LS-DYNA
*ELEMENT_MASS
*ELEMENT_MASS_NODE_SET
*ELEMENT_INERTIA
*ELEMENT_SEATBELT_ACCELEROMETER
Radioss
/ADMAS defined on NODES
Mass in CNRB
Constrained_Nodal_Rigid_Bodies
LS-DYNA
Total mass transferred to the *CONSTRAINED_NODAL_RIGID_BODYs in the model.
Mass on RBODY
Radioss
Total mass transferred to the RBODYs in the model.
Transferred Mass
For each component, this is the nodal massed transferred to the rigid bodies.
LS-DYNA
Deformable mass transferred to CONSTRAINED_NODAL_RIGID_BODY or to the rigid parts of a *CONSTRAINEED_EXTRA_NODES or to the rigid parts of *CONSTRAINED_RIGID_BODIES
Radioss
Deformable mass transferred to RBODY
Distributed Mass
LS-DYNA
Mass in rigid components coming from free nodes linked by *CONSTRAINED_EXTRA_NODES
Engineering Mass
LS-DYNA
Engineering Mass = Structural Mass + Non structural Mass + Lumped Mass + Distributed Mass
Radioss
Engineering Mass =Structural Mass + Non structural Mass + Lumped Mass
Solver Part Mass
Solver Part Mass = Engineering Mass + Transferred Mass
Total Mass
Total Mass = Solver Part Mass