Computational closed-loop control of fluid-structure interaction for lightweight structures

When dealing with lightweight structures in civil engineering one of the effects that has to be taken into account is their dynamic excitation due to wind. Since this problem can hardly be dealt with in an experimental manner, a partitioned fluid-structure interaction can be conducted to describe the behaviour of such a problem. The advantage of the partitioned approach to this problem is the possibility of calculating the fluid and the structural subsystem in a segregated manner. The coupled simulation is carried out by running the subsystems independently while during the simulation the subsystems exchange data.Furthermore this approach enables us to include additional subsystems especially a controller to the simulation framework. Here we present different possibilities of coupling fluid-structure interaction problems with different variants of controllers for closed-loop control. Herein especially the algorithmic structure of coupling the three fields of fluid, structure and control and its stability is discussed. Finally a well-known benchmark example for fluid-structure interaction is expanded by a state-feedback control.     «

When dealing with lightweight structures in civil engineering one of the effects that has to be taken into account is their dynamic excitation due to wind. Since this problem can hardly be dealt with in an experimental manner, a partitioned fluid-structure interaction can be conducted to describe the behaviour of such a problem. The advantage of the partitioned approach to this problem is the possibility of calculating the fluid and the structural subsystem in a segregated manner. The coupled si...     »