Modal parameter estimation of the coupled moving-mass and beam time-varying system

Z. S. Ma, L. Liu, S. D. Zhou, W. Yang

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

7 Citations (Scopus)

Abstract

The coupled moving-mass and beam system exhibits time-dependent characteristics, requiring time-varying dynamic models and corresponding modal analysis methods. The dynamic model of the coupled moving-mass and beam time-varying system under arbitrary excitation was firstly built; the influence of the moving-mass velocity and acceleration on the modal parameters was analyzed; and the modal parameters of the coupled time-varying system were estimated based on the non-stationary responses obtained through the state space representation in numerical simulation. An experimental system consisting of a simply supported beam and a moving mass sliding on it was set up. The responses of the experimental system under random excitation were measured and the modal parameters of the experimental system were estimated afterwards. The estimated results from the numerical simulation and the experimental system validate the time-varying dynamic model and indicate the effectiveness of the modal parameter estimation.

Original languageEnglish
Title of host publicationProceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics
EditorsP. Sas, D. Moens, H. Denayer
PublisherKU Leuven
Pages587-596
Number of pages10
ISBN (Electronic)9789073802919
Publication statusPublished - 2014
Event26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014 - Leuven, Belgium
Duration: 15 Sept 201417 Sept 2014

Publication series

NameProceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics

Conference

Conference26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014
Country/TerritoryBelgium
CityLeuven
Period15/09/1417/09/14

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