A combined VPT and SVT approach for decoupling in the presence of inaccessible and deformable interfaces

M. Di Manno, F. Trainotti, M. Ialonardi, D. J. Rixen, A. Fregolent

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics
EditorsW. Desmet, B. Pluymers, D. Moens, J. del Fresno Zarza
PublisherKU Leuven, Departement Werktuigkunde
Pages3530-3544
Number of pages15
ISBN (Electronic)9789082893175
StatePublished - 2024
Event31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024 - Leuven, Belgium
Duration: 9 Sep 202411 Sep 2024

Publication series

NameProceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics

Conference

Conference31st International Conference on Noise and Vibration Engineering, ISMA 2024 and 10th International Conference on Uncertainty in Structural Dynamics, USD 2024
Country/TerritoryBelgium
CityLeuven
Period9/09/2411/09/24

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