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Parametric instability of an axially moving belt subjected to multi-frequency excitations: experiment and analytical validation

Michon, Guilhem and Manin, Lionel and Remond, Didier and Dufour, Regis and Parker, Robert Parametric instability of an axially moving belt subjected to multi-frequency excitations: experiment and analytical validation. (2008) Journal of Applied Mechanics, vol. 75 (n° 4). pp. 041004.1-041004.8. ISSN 0021-8936

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Official URL: http://dx.doi.org/10.1115/1.2910891

Abstract

This paper experimentally investigates the parametric instability of an industrial axially moving belt subjected to multifrequency excitation. Based on the equations of motion, an analytical perturbation analysis is achieved to identify instabilities. The second part deals with an experimental setup that subjects a moving belt to multifrequency parametric excitation. A data acquisition technique using optical encoders and based on the angular sampling method is used with success for the first time on a nonsynchronous belt transmission. Transmission error between pulleys, pulley/belt slip, and tension fluctuation are deduced from pulley rotation angle measurements. Experimental results validate the theoretical analysis. Of particular note is that the instability regions are shifted to lower frequencies than the classical ones due to the multifrequency excitation. This experiment also demonstrates nonuniform belt characteristics (longitudinal stiffness and friction coefficient) along the belt length that are unexpected sources of excitation. These variations are shown to be sources of parametric instability.

Item Type:Article
Additional Information:Thanks to American Society of Mechanical Engineers editor. The definitive version is available at http://www.asme.org/. The original PDF of the article can be found at ASME website : http://dx.doi.org/10.1115/1.2910891
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Other partners > Ohio State University (USA)
Laboratory name:
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Deposited By: Guilhem Michon

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