TY - GEN
T1 - A combined VPT and SVT approach for decoupling in the presence of inaccessible and deformable interfaces
AU - Di Manno, M.
AU - Trainotti, F.
AU - Ialonardi, M.
AU - Rixen, D. J.
AU - Fregolent, A.
N1 - Publisher Copyright:
© 2024 Proceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2024
Y1 - 2024
N2 - Substructure decoupling identifies a subsystem within a mechanical system by removing the measured dynamics of other subsystems from that of the assembly. Challenges persist in this procedure in the presence of inaccessible and flexible interfaces, measurement errors and noise. Various approaches address these issues: the Virtual Point Transformation (VPT) reduces noise at boundary DoFs but fails to capture the interface flexibility. The extended decoupling interface can help to overcome this limitation by involving internal DoFs in the decoupling but leads to major error propagation. The Singular Vector Transformation (SVT) reduces errors at internal DoFs but lacks a physical description of the interface. This work proposes different approaches to decoupling that combine VPT, the extended interface, and SVT to retain the interface flexibility and to smooth measurement errors at all DoFs while describing the interface topology with physical coordinates. Advantages are demonstrated on a laboratory benchmark structure using experimental data.
AB - Substructure decoupling identifies a subsystem within a mechanical system by removing the measured dynamics of other subsystems from that of the assembly. Challenges persist in this procedure in the presence of inaccessible and flexible interfaces, measurement errors and noise. Various approaches address these issues: the Virtual Point Transformation (VPT) reduces noise at boundary DoFs but fails to capture the interface flexibility. The extended decoupling interface can help to overcome this limitation by involving internal DoFs in the decoupling but leads to major error propagation. The Singular Vector Transformation (SVT) reduces errors at internal DoFs but lacks a physical description of the interface. This work proposes different approaches to decoupling that combine VPT, the extended interface, and SVT to retain the interface flexibility and to smooth measurement errors at all DoFs while describing the interface topology with physical coordinates. Advantages are demonstrated on a laboratory benchmark structure using experimental data.
UR - http://www.scopus.com/inward/record.url?scp=85212192535&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85212192535
T3 - Proceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics
SP - 3530
EP - 3544
BT - Proceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - del Fresno Zarza, J.
PB - KU Leuven, Departement Werktuigkunde
T2 - 31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024
Y2 - 9 September 2024 through 11 September 2024
ER -