Original Scientific Paper, Volume 20, Number 1, Year 2022, No 903, pp 53-62

Published: Mar 15, 2022

DOI: 10.5937/jaes0-30916

VIBRATION REDUCTION OF CONTINUOUS MOVING LOADS ON A NONLINEAR SIMPLE BEAM RESTing ON AN ELASTIC FOUNDATION

Yi-Ren Wang 1
Yi-Ren Wang
Affiliations
Tamkang University, Department of Aerospace Engineering, New Taipei City, Taiwan
Chien-Chun Hung 1
Chien-Chun Hung
Affiliations
Tamkang University, Department of Aerospace Engineering, New Taipei City, Taiwan
Hsin Huang 1
Hsin Huang
Affiliations
Tamkang University, Department of Aerospace Engineering, New Taipei City, Taiwan
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Abstract

This technical note investigates a hinged-hinged nonlinear Euler-Bernoulli beam resting on an elastic foundation subjects to moving loads. The method of multiple scales (MOMS) is employed to analyze this nonlinear beam model. The fixed points plots are made to identify the system’s internal resonance. The frequency ratio plot is proposed to predict the system internal resonance conditions. This study improved the author’s earlier work for a wider range of prediction on internal resonance conditions. The continuous concentrated moving loads are applied to this nonlinear beam model. The dynamic vibration absorber (DVA) is attached on the beam to reduce vibration and prevent internal resonance. The mass, spring constant and location of the DVA are studied to obtain the best damping effect on the nonlinear beam with moving loads. The results are verified by numerical results and ANSYS simulations.

Keywords

internal resonance fixed points plot vibration dynamic vibration absorber

Acknowledgements

This research was supported by the Ministry of Science and Technology of Taiwan, Republic of China (Title of the project: Analysis and verification of space rockets - subproject: Vibration reducing on space rockets. Grant number: MOST 109-2224-E-006-004).

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