Analysis of the loading process effect on the tribological node geometry change of agricultural machine

https://doi.org/10.17221/31/2015-RAECitation:Kučera M., Malý V., Kučera M. (2015): Analysis of the loading process effect on the tribological node geometry change of agricultural machine. Res. Agr. Eng., 61: S53-S59.
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The effect of loading on the properties of selected sliding pairs has been analysed. The experimental tests were performed using the testing machine Tribotestor M10. The steel 11 600 and all-bronze sleeve of CuSn12 material has been selected as the elements of friction pair. Two oils were selected for lubrication of friction node – the mineral gear oil Madit PP80 and ecological oil Plantohyd 46 S. Chosen friction pairs were tested in three loading regimes (two dynamic processes and one static process). 60 tribological tests have been performed. The weight loss, the change of surface roughness and the absolute change of cylindricity of the friction pair elements were the tracked and analysed parameters. Based on the experiments, various effects of loading regimes may be concluded. The obtained results confirmed that the power spectral density of generated signal is probably an important criterion for assessment in terms of simulated random dynamic load in the given experiment. From the technical perspective, the power spectral density is actually the amount of energy supplied to the process.
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