Bending and Torsional Vibrations of Long Cardan Drives

Tiba, Zsolt (2006) Bending and Torsional Vibrations of Long Cardan Drives. Progress in Agricultural Engineering Sciences, 2 (1). pp. 1-34. ISSN 1786-335X

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Abstract

The objective of the paper presented here is to determine the relationships for describing the bending and torsional vibrations of long cardan drivelines and to compare the calculated results to the experimental results. The problem of the resonance of cardan shaft drivelines means a considerable difficulty in the field of designing. Dynamic modelling could solve the problem by determining the natural frequency of the system. The load is dependent on the ratio of the natural frequency to the excitation frequency. Furthermore, the dynamic model is suitable for tuning/detuning the natural frequency. The parameters of the driveline (moment of inertia, bearing stiffness, shaft length, etc.) are the input data of the simulation model developed and the effects of changes can be determined. The driveline can be designed according to the results of the simulation of a flywheel location, bearing stiffness and cardan shaft length. Location of the safety clutch, location and number of cardan shaft bearings and the stiffness of bearings can be found out by the simulation model, as well. The results of the measurements performed with a test stand proved that resonance phenomenon did not occur with the Wühlmaus 2733 potato harvester during operating conditions. Therefore, the possible breakdown of some parts of the machine was caused probably by overloading and not by resonance.

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