Abstract
Synchronous belt drives combine the advantages of simple belt drives (flat, trapezoidal or ridged) due to their low weight, low maintenance, large linear speed ranges and high transmission ratios with the advantages of chains: absence sliding, synchronized transmission of speed, low tensioning, etc. Thanks to the toothing of the belt which enters the corresponding one of the synchronous pulleys, there is direct transmission of the power without sliding as between two gears. This article develops an experimental study which makes it possible to see the influence of the angular speed, the engine torque and the setting tension on the impact noise of the belt teeth on the pulley teeth during meshing and vibrations of the free strands of the belt. We have measured the noise generated by three transmissions by synchronous belts of type AT10, BAT10 and SFAT10.
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Abbreviations
- F N :
-
Nominal transmissible tangential force [N] by the armature (N)
- F T :
-
Tangential force [N]
- F pt :
-
Pre-tension force during assembly [N]
- F T/Z :
-
Tangential force transmissible [N] by a tooth engaged by 10 mm of belt width
- P :
-
Power [kW]
- V :
-
Speed [m/s]
- e :
-
Centre distance [mm]
- B b,B p :
-
Belt width and pulley width [mm]
- d k 1,d k 2 :
-
Outside diameter of the small pulley [mm]
- d 01 :
-
Pitch diameter [mm]
- t :
-
Pitch [mm]
- Z B :
-
Number of belt teeth
- Z e :
-
Number of teeth engaged on the driving pulley (max. 12 for calculation).
- f :
-
Frequency [Hz]
- Z 1,Z 2 :
-
Number of teeth of the driving pulley and drive pulley
- k :
-
Constant for measuring pretension k = 2.5
- L b :
-
The width of the belt [mm]
- L p :
-
The width of the pulley [mm]
- T :
-
Setting tension [N]
- C :
-
Torque [N. m]
- a,b :
-
The vectors to create the filter data y
- N :
-
Angular speed [rpm]
- H 1, H 2 :
-
The noise peak [dB]
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Acknowledgements
This research was supported by the Mechanical Engineering, Materials and Structures Laboratory approved in 2020 by Ministerial Order N° 05 on 18 February 2020, a laboratory of excellence at the University Center of Tissemsilt. The support and interest of our sponsors are gratefully acknowledged.
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Merghache Sidi Mohammed was in charge of the whole trial. All authors read and approved.
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Merghache, S.M., Hamdi, A. & Ghernaout, M.E.A. Experimental Measurement and Evaluation of the Noise Generated by Three Transmissions by Synchronous Belts of Type AT10, BAT10 and SFAT10. Int. J. Precis. Eng. Manuf. 23, 31–43 (2022). https://doi.org/10.1007/s12541-021-00599-7
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DOI: https://doi.org/10.1007/s12541-021-00599-7