Creo Topology Optimization > Optimization Setup > Design Objectives > To Create a Mass Fraction Design Objective
  
To Create a Mass Fraction Design Objective
1. Click Home > Design Objective. The Design Objective dialog box opens.
2. In the Name box, type a name for the design objective.
3. To change the color used for the design objective, click , and select a color in the Color Editor dialog box.
4. To define the physical feature to optimize, in the Response type box, select Mass Fraction (MASSFR).
5. To define all or the portion of the model to which the design objective applies, next to Objective target, do one of the following:
To apply the design objective to the entire model, select the All design regions check box.
To apply the design objective to only a portion of the model, clear the All design regions check box, and then do the following:
To include items in the optimization for this design objective, click the Volumes, Components collector, and then select volumes or components to optimize.
To exclude regions from the optimization for this design objective, click the Excluded regions collector, and select volumes to exclude.
6. In the Goal box, select an option:
Min—Minimizes the mass fraction.
Max—Maximizes the mass fraction.
7. To assign a weight factor to this design objective in relation to other objectives, in the Weight factor box, type a value.
8. Click OK.