Calculate Mass
Use the Mass tool to calculate the mass, center of gravity (COG), and moments of inertia (MOI) of the model.

From the Validate ribbon, click the Mass tool.

Click on the guide bar to set your
desired options.
 Results type
 Defines the calculation as Mass, Center of Gravity and Inertia, or, Mass values only.
 Consider Time Step Mass
 Activates the calculation of solver numerical added mass due to
elemental time step.Restriction: This option is only valid in the Radioss and LSDYNA profiles.
 Time Step Definition
 Set the method to retrieve the Time Step value.Restriction: This option is only valid in the Radioss and LSDYNA profiles.
 Axes
 Defines the coordinate system axes in which the CoG and MOI values are computed. It can be the Global System or a Local System. If Local System is selected, a System selector appears on the guide bar to select the system in the model.
 MOI Center
 Defines the center location used for the moment of inertias calculation. It can be "at CoG" or "at System Center". Example: If the Axes option is set to Global System, MOI Center set to "at System Center" means that MOI values are calculated around (0,0,0) point location.
 Consider Lumped Mass
 Allows you to consider the lumped masses for the calculation of the CoG and MOI on the component level. This option is off by default, which respects the solver behavior.
 Show center of gravity
 Enables the creation of a marker in the modeling window to visualize the CoG location of the model.
 CoG Node
 Creates a free node at the CoG location of the model.
 Context numerical format
 Defines the format of the numerical format and precision of the values exposed in the results table
 Use the dropdown menu to group values based on assembly or include.

Click Compute.
The detailed mass values are displayed in a table.CoG and inertia selected as the Result Type, per component:
 Total Mass
 Represents the engineering mass as:
 Structural Mass
 Represents the physical mass of the structure, calculated from the property and material characteristics assigned to the FE mesh.
 NonStructural Mass
 Represents the additional solver masses added on the structural mesh.
 Lumped Mass
 Represents the portion of the nonstructural mass, which is distributed on structural nodes.
 Mass in Rigid Body
 Represents the mass of the nodal rigid body elements in the collector.
 Transferred Mass
 Represents the nodal mass transferred to the nodal rigid body elements or rigid Parts.
 Solver Mass
 Represents the mass as it is calculated by the solver.
 Total Mass
 Represents the total engineering mass of the model and is the sum of the values in the Total Mass column of the table.
 Total Structured Mass
 The sum of the values in the Structural Mass column of the table.
 Total NonStructured Mass
 The sum of the values in the NonStructural Mass column of the table.
 Total Rigid Body Mass
 The sum of the Mass in Rigid Body column and represents the total mass of the nodal rigid body elements in the model.
 Total Transferred Mass
 The sum of the Transferred Mass column of the table.
 Total Solver Mass
 The sum of the Solver Mass column of the table.
 Total Model Mass
 Represents the final total mass of the model as it is calculated by the solver: