Cylindrical Constraint—Creo Ansys Simulation
A pin or cylindrical constraint allows the axial, angular & radial movement of a cylindrical surface, while keeping the axis fixed. It is particularly useful when a surface must move in one or more directions, but must be fixed in the remaining directions.
1. Within a structural or modal simulation study, click > > 
Cylindrical. The Cylindrical Constraint dialog box opens.
Cylindrical. The Cylindrical Constraint dialog box opens.2. Specify a Name for the constraint or accept the default name. Optionally, click the color swatch adjacent to the Name box to change the color of the icon, the distribution, and the text displayed for the constraint.
3. Select the cylindrical surfaces to constrain. You can select the geometry before or after you open the Cylindrical Constraint dialog box. The References collector displays the selected surfaces.
4. Click OK to create the constraint and save it.