As a new feature in SolidWorks 2013, you can add a center of mass point in assemblies. The position of the center of mass point updates when the model’s center of mass changes. For example, the position of the center of mass point updates as you add, modify, delete, or suppress components or add or delete assembly features. The center of mass point can be useful when you are designing assemblies requiring balanced mass (for example, to avoid excessive vibration).
You can mate to the COM points of an assembly’s components in distance, coincident, and concentric mates. You cannot mate to the COM point of the assembly itself.
The center of mass is a selectable entity in drawings, and you can reference it to create dimensions. In a drawing, you can create reference dimensions between center of mass points and geometric entities, such as points and edges.
A quick video on the new feature
Need more on what’s new in SolidWorks 2013, visit new SolidWorks 2013 website to see all the major updates when it launches on September 10, 2012.