MBS Joints Panel

Location: Analysis page > Safety module

The panel contains an organize systems option. When activated (default) during joint creation, two coordinate system collectors will be automatically created and the joint local coordinate systems will be placed in their respective collectors. Since joint local coordinate systems are usually coincident in global space (but not required), the "organize systems" option provides easy access to each joint system.

Care should be taken when creating joints without coincident joint coordinate because the exported model might not reflect the model in Engineering Solutions.

Joint types are defined by assigning a card image in the card image= field (in some solver interfaces, it is the type= field). If no card image is assigned, all DOFs are active.

The available joint types are dependent on the template file loaded with the solver interface.

When an mbjoint entity is created, a coordinate system hierarchy is created by:

Referencing the child multibody collector's coordinate system to the joint child coordinate system.
Referencing the joint child coordinate system to the joint parent coordinate system.
Referencing the joint parent coordinate system to the parent multibody collector's coordinate system.

When an mbjoint entity is deleted in the Delete panel, the joint's child coordinate system is referenced to the global coordinate system.

Create Subpanel

Use the Create subpanel to create new MBS joints.

Option	Action
name =	Specify a name for the new joint.
card image = / type =	Select a card image. Note: In some solver interfaces this button is replaced by type =.
parent: color	Select a color for the parent entity of the joint.
parent: syst	Select the joint parent's coordinate system.
parent: multibody / reference space	multibody Connect the joint to two bodies. reference space Connect the joint to the reference space.
mbjoint: color	Select a color for the joint.
child: color	Select a color for the child entity of the joint.
child: syst	Select the joint child's coordinate system.
child: multibody	Select the multibody collector that defines the joint's child body.
organize systs	Separate the joint coordinate systems into new coordinate system collectors.

Update Subpanel

Use the Update subpanel to change the characteristics of an existing MBS joint.

Option	Action
name =	Select an existing MBS joint.
card image = / type =	Select a card image. Note: In some solver interfaces this button is replaced by type =.
parent: syst	Select the joint parent's coordinate system.
parent: multibody / reference space	multibody Connect the joint to two bodies. reference space Connect the joint to the reference space.
mbjoint: color	Select a color for the joint.
child: syst	Select the joint child's coordinate system.
child: multibody	Select the multibody collector that defines the joint's child body.

Card Image Subpanel

Use the Card Image subpanel to change the card image (or type, in some solver interfaces) assigned to an existing MBS joint.

Option	Action
name =	Select an existing MBS joint.
card image = / type =	Select a card image. Note: In some solver interfaces this button is replaced by type =.

Command Buttons

Button	Action
create	Create the new MBS joint.
create/edit	Create the new joint and open its assigned card image in edit mode.
update	Change the selected joints to use the current input settings.
edit	Edit the current MBS joint's card image.
load	Load the selected MBS Joint's card image.
load/edit	Load the selected MBS Joint's card image and display it in edit mode.
reject	Undo the most recent joint creation or update.
reset	Reset the joint's input settings to their original values.
reset all	Reset all MBS joints in the model their original values.
return	Exit the panel.