Suggested Technique for Reference Point at center of gravity
Technique
In assy mode, create a point referenced to the coordinate system used when
calculating the COG. In the assy, use the following relation to update the point
location. The following locates a datum point at the COG of the assy:
$D? = mp_cg_x("","DEF_ACS","")
$D? = mp_cg_y("","DEF_ACS","")
$D? = mp_cg_z("","DEF_ACS","")
Replace the ? with the correct dim identifier. Replace the "DEF_ACS"
with the name of your CS. In drawing mode, place a COG symbol attached to the
point created at the COG.
Technique
You must have the advanced module of Pro/ENGINEER - Behavioral Modeler to do this. Create an analysis feature. Choose Datum > Analysis. In the Analysis dialog box, do the following:
 | Choose Model Analysis as the type of the analysis.
| Click Next to go to the next page to specify a parameter that you
want to create.
| Choose Model Mass Properties as the type of measure.
| Click Compute to compute the mass.
| Click Close.
| Choose the parameters XCOG, YCOG, ZCOG and select Yes to create
these parameters.
| Choose Next to go to the next page to create a point at center of
mass as a result of the analysis feature.
| Under Result datums, choose the point at center of mass, choose Yes
to create and enter the name for the datum. | |