Joint Time Constraint dialog box

Type
Type	Specifies the type of constraint you want to apply to the joint. You can use DOF Liberation and DOF Fixation only once per joint. If you need both types of constraints, you must first free the joint, and then constrain it using two different Joint Time Constraints:DOF Liberation—You must free (move) the joint first.DOF Fixation—You can fix (stop) the joint after you free it.DOF LiberationApplies to joints that use three nodes, such as revolute, inline, cylindrical, slider, and slider-universal.Frees the joint at the specified point in time. For example, you might want a slider joint to remain fixed until your model is fully loaded. When the model is loaded, you can let the slider joint move by specifying a time that corresponds with the first subcase after the model is loaded. To make this joint stop, set DOF Fixation at a subsequent time.DOF FixationApplies to joints that use three nodes, such as revolute, inline, cylindrical, slider, and slider-universal.Stops the joint at the specified point in time. By default, a joint is free, so you can stop it at any point in time. DOF Fixation is also valid after you free a joint with DOF Liberation. For example, you might want to stop the moving joint so that other joints can begin their movements. When you stop the joint with DOF Fixation, you cannot move the joint again.Removable LinkApplies to Fixed joints.Keeps the joint connected until a specified point in time.
Name
Name	Sets the name of the joint time constraint. The name appears in the Constraint Container and the Information window.
Description	Sets the description of the joint time constraint. The description appears in the Information window.
Destination Folder
Load Container	Specifies the folder in the Simulation Navigator in which the load is stored. The list includes the root container and existing folders that you created using the New Folder command.To view a hierarchical list of existing folders, click Folder Manager . To create a new folder, right-click any level of the hierarchy and choose New Folder.
Model Objects
Group Reference	Lets you apply the constraint to a group.For more information, see Group Reference options.
Select Object	Lets you select the part of the joint to release or fix.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Magnitude
Time	Appears when type is set to DOF Liberation or DOF Fixation.Sets the time to free or fix the joint. You must coordinate this time with time increments in your subcases.For more information, see Additional magnitude options.
Release Times
DOF1DOF2DOF3DOF4DOF5****DOF6	Appears when type is set to Removable Link.Sets the time to release each DOF of the selected Fixed joint. For example, releasing the DOFs are useful when you are testing a model that must deploy at a specified time, such as a satellite that must deploy at times that are based on centrifugal effects.For example, you can release all of the DOFs at one time, or you can release the translational DOFs at one time and release the rotational DOFs at a different time.To release all of the DOFs at the same time, enter the same value for each DOF.To release the translational DOFs at one time, enter the same time for DOF1, DOF2, and DOF3.To release the rotational DOFs at one time, enter the same time for DOF4, DOF5, and DOF6.The times you enter must correspond to the time increments in your subcases.For more information, see Additional magnitude options.

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Joint Time Constraint dialog box, Simcenter 3D 2021.1 Series

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