RecurDyn V9R1 What's New - OnOff Joint

RecurDyn now has a joint called the OnOff Joint. This joint is a kind of Fixed constraint with the ability to constrain between 0 and 6 degrees of freedom. The OnOff Joint has the ability to enable and disable the constrained degrees of freedom during the simulation. An Expression is used to enable or disable the constraint during the simulation.

The OnOff Joint can be used to increase the speed of computation when it can be used instead of a contact element. For example, it can be used with a device that firmly grabs things, like a robot arm that grabs an object. In this case, an OnOff joint can be used instead of contact elements between the gripper and the object. Another example is a projectile fired from a tube. The OnOff constraint can be used instead of contact elements between the projectile and the tube to significantly increase the speed of computation.

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