Using Mass Properties
KeyCreator \ Verify \ Mass-Properties \ Using-Mass-Properties

Select Mass Properties from the Tools>Verify options.  You will be prompted to select the solid object(s) to analyze.


Using the Function:

1      Select Mass Properties from the Tools>Verify submenu.

2      Select the solid object(s) using any of the standard Selection Menu options.

3   The Mass Properties dialog box appears.  The solids appear according to there I.D.

4      Choose the object you want to analyze from the pull-down list.

5   Mass properties will by default calculate using a 'quick calculation' method which speeds up the result time considerably but a recalculate using a more precise method is possible by choosing the Recalculate using a Higher Precision button. Once done the button will be grayed out signifying the calculations where run using the precise method.

6   Properties are calculated based on the default unit value of density and area weighted density.  To determine the mass properties based on different density values, enter a different value in the edit field and Tab out of the field.  Tab from field to field and enter values of the following parameters:


Mass per unit volume.  The units of measure must agree with the default wire-frame length units.


Mass per unit area of the faceted surface enveloping a  solid object.  Think of this as the density of a material coating the object.  Solids uses this data, not Density, to calculate surface mass.



As you tab to a new field after entering a value, the Mass Properties fields update based on the data you just entered.  In addition to calculating the weights and properties of each object, a Total listing calculates the sum total of all objects selected (e.g., the total weight of an assembly) and displays those results in the Total tab. To view a point entity at the center of mass choose the Model Center of Mass button. To view a point entity at the Model Principal Axis choose the Model Principle Axis button.

7    Repeat steps 1-3 for any remaining objects you want to analyze.

8    Select the MASS OUT button to save your data to a Mass Properties output file (ASCII .TXT format).

9    Enter a new filename, without the extension, in the File Name dialog box to replace the default filename, "massprop."

10  Click OK.