TY - GEN
T1 - FRF based iterative coupling of a numerical and experimental mechanical system with moderate nonlinearities
AU - Witteveen, Wolfgang
AU - Koller, Lukas
N1 - Publisher Copyright:
© 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2022
Y1 - 2022
N2 - An iterative algorithm for a coupled simulation of a numerical subsystem and a real (experimental) one is discussed. 'Iterative' means that the subsystems are not driven simultaneously but in loops one after the other. After each loop run, new input signals are computed, so that the deviation of the cutting quantities (displacements and forces) becomes smaller with the next iteration. The proposed method works for quasi-static (slow speed) and dynamically reacting systems as well as for subsystems with moderate nonlinearities. The iterative character involves that no controllers are necessary and that the speed of the data exchange is not critical. On the other hand, the method can only be applied to components whose properties do not change during the simulation (e.g. due to damage). Privacy between the two domains is guaranteed, as no explicit mathematical models in the sense of Finite Element (FE) structures or the like, but only frequency response functions, have to be exchanged.
AB - An iterative algorithm for a coupled simulation of a numerical subsystem and a real (experimental) one is discussed. 'Iterative' means that the subsystems are not driven simultaneously but in loops one after the other. After each loop run, new input signals are computed, so that the deviation of the cutting quantities (displacements and forces) becomes smaller with the next iteration. The proposed method works for quasi-static (slow speed) and dynamically reacting systems as well as for subsystems with moderate nonlinearities. The iterative character involves that no controllers are necessary and that the speed of the data exchange is not critical. On the other hand, the method can only be applied to components whose properties do not change during the simulation (e.g. due to damage). Privacy between the two domains is guaranteed, as no explicit mathematical models in the sense of Finite Element (FE) structures or the like, but only frequency response functions, have to be exchanged.
UR - http://www.scopus.com/inward/record.url?scp=85195955566&partnerID=8YFLogxK
M3 - Conference contribution
T3 - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
SP - 2659
EP - 2666
BT - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - Neeckx, S.
ER -