Creo 拓樸最佳化 > Optimization Setup > Design Objectives > About Design Objectives
  
About Design Objectives
Use Design Objective (TOBJ or TINDEX) to define physical features to optimize by, for example, reducing the mass, minimizing the frequency, or minimizing temperature. You select response types (RTYPE) that are treated as the objective function during topology optimization. Some types of responses require you to select load cases.