Add Constraints

You add constraints to mimic environmental conditions. Constraint instances are child nodes of the browser Constraints node. Double-click a constraint node to edit the constraint.

Note: Constraints are a crucial part of building a simulation model and can greatly affect the results of the simulation. Consider them carefully, and accurately represent the physical conditions. Use the Simulation Guide for assistance in the application of constraints.

	Constraint	Constraint-Specific Information
	Fixed Constraint	Apply a fixed constraint to a face, edge, or vertex in the part. Apply a fixed constraint to establish zero or non-zero displacement on a part.
	Pin Constraint	Apply a pin constraint on cylindrical faces. Apply pin constraints to prevent cylindrical faces from moving or deforming in combinations of radial, axial, or tangential directions.
	Frictionless Constraint	Apply a frictionless constraint to a flat or cylindrical surface in the part. Frictionless constraints prevent the surface from moving or deforming in the normal direction relative to the surface.

Add a constraint

1. Click the constraint command corresponding with the type of constraint you want to assign.
2. The select command is active and you can begin selecting the geometry related to the constraint type. You can expand the dialog box to access advanced settings.

If you right-click a constraint in the browser, you can:

• Edit the constraint. The appropriate dialog box displays so that you can change.
• View reaction forces. Values are zero until a simulation is run.
• Suppress the constraint.
• Copy and Paste between simulations within the same document.
• Delete the constraint.

To rename an item in the browser, click it, pause, click it a second time, enter a new name, and then press ENTER.

Note: For some types of simulations you define, constraints are not required.