Constraint coupling for flexible multibody systems: Stabilization by modified spatial discretization

We consider a differential-algebraic co-simulation approach to couple flexible structures to a rigid multibody system. That is, the coupling is realized using an algebraic constraint equation. The spatial discretization of flexible structures introduces an algebraic loop in the data exchange of subsystems. We investigate how this influences the stability and how modifying the discretization can help to stabilize the co-simulation.