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Proceedings Paper

V-belt transverse vibration measurement by means of laser Doppler vibrometry
Author(s): A. Agnani; M. Martarelli; E. P. Tomasini
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Paper Abstract

The dynamic behaviour of a power transmission V-belt system with two fixed pulleys has been analysed by applying the theory of the forced non-linear response of a moving string driven harmonically by eccentrically mounted pulleys. The model has been validated experimentally with reference data obtained by measuring out-of plane components of the belt vibration. The experimental data have been acquired by means of a single-point laser Doppler vibrometer (LDV), measuring the transverse vibration of the belt. Another experimentally technique applied here, for transverse vibration acquisition, was the continuous scanning LDV (CSLDV) that has been used for the first time in translating objects. From the model and the measurements, it has been found that the frequency crossing diagrams, analogous to the so-called Campbell plot used in rotating machinery, perfectly agree. Essentially, this plot demonstrates that the natural frequencies are strongly dependent on the belt's transport speed. Consequently, the model can be employed as useful tool for identifying the transport speeds at which resonances are expected.

Paper Details

Date Published: 17 June 2008
PDF: 11 pages
Proc. SPIE 7098, Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 709819 (17 June 2008); doi: 10.1117/12.803167
Show Author Affiliations
A. Agnani, Univ. Politecnica delle Marche (Italy)
M. Martarelli, Univ. Politecnica delle Marche (Italy)
E. P. Tomasini, Univ. Politecnica delle Marche (Italy)

Published in SPIE Proceedings Vol. 7098:
Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications

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