A comparative analysis of frequency- and impulse-based substructuring for experimental shock response predictions

F. Trainotti, O. M. Zobel, D. J. Rixen

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

Abstract

Frequency-based substructuring has become widely adopted in experimental settings due to its ease of use, and counts numerous successful applications. In the analysis of shock and initial response peaks, however, a frequency domain prediction might be erroneous due to the artifacts of the Fourier transform, such as the forced periodization. The issue might be addressed via impulse-based substructuring, the time domain counterpart of the frequency-based formulation, which utilises impulse response functions and linear convolution for the coupling process. This article presents a comparative analysis of frequency- and impulse-based substructuring techniques in the context of experimental shock response predictions. First, time and frequency domain deconvolution algorithms are discussed and compared on a numerical example. Then, the outcome of a substructuring prediction is demonstrated in an experimental coupling scenario. Both a one-dimensional rod and a multi-dimensional virtual point coupling applications are presented.

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
Pages3519-3529
Number of pages11
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

Fingerprint

Dive into the research topics of 'A comparative analysis of frequency- and impulse-based substructuring for experimental shock response predictions'. Together they form a unique fingerprint.

Cite this