TY - GEN
T1 - A comparative analysis of frequency- and impulse-based substructuring for experimental shock response predictions
AU - Trainotti, F.
AU - Zobel, O. M.
AU - Rixen, D. J.
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 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85212222696&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85212222696
T3 - Proceedings of ISMA 2024 - International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics
SP - 3519
EP - 3529
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 -