.ModelicaAdditions.MultiBody.CutJoints.ConnectingRod

Information

A ConnectingRod instance is a rod which has a spherical joint on each of its two ends.
It has 5 degrees of freedom. It has no mass and no inertia and is used as cut
joint to break a kinematic loop of a multibody system. It is highly recommended
to use this cut-joint whenever possible, because this enhances the efficiency
considerably.

There is a similiar cut-joint, model ConnectingRod2, which allows additionally
to define mass and inertia proporties of the rod.

Parameters:
  L: Length of the rod in [m]

The single constraint equation on position level states, that the distance
between the origins of frame_a and frame_b is equal to the length of the rod.
As constraint force fRod (= Lagrange multiplier) of the joint
the force in the rod is used.