Design of equipment suitable for measuring the natural frequency of rotating shaft
DOI:
https://doi.org/10.32972/dms.2022.012Keywords:
natural frequency, critical speed, shaftAbstract
In this paper, the construction and operation of a measuring bench for measur-ing the vibration state of a rotating shaft and the evaluation of the measurement results are presented. The design of the measuring bench was aimed at measuring the vibration gen-erated by the excitation effects on the shaft. The effect of the imbalance and the position of the disc on the vibration characteristics is shown in diagrams. It is also observed that at higher speeds the vibration plotted shows an irregular shape. This is due to the excitation effects on the whole structure.
References
Choong-Yul S. et al. (2008). A study on the vibration characteristics of crit-ical speed for rotor shaft. Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 9. https://doi.org/10.5050/ksnvn.2008.18.9.961
Wang, Q. et al. (2012). Torsional Natural Frequencies: Measurement Vs. Prediction. Proceedings of the Forty-First Turbomachinery Symposium. https://doi.org/10.21423/R1RM09
Vasselin, J.-L. (2013). Practical methodologies for on-site measurements of torsional natural frequencies – application to industrial cases. Surveillance 7 – International Conference,
Huang, Z. – Han, B. (2015). Effective approach for calculating critical speeds of high‐speed permanent magnet motor rotor‐shaft assemblies, IET Electric Power Applications, Vol. 9, No. 9. https://doi.org/10.1049/iet-epa.2014.0503
Geonea, I. et al. (2017). Analytical and numerical study of critical speed for right shafts. Acoustics and Vibration of Mechanical Structures – Proceed-ings of the 14th AVMS Conference. https://doi.org/10.1007/978-3-319-69823-6_49
Song, H. et al. (2022). Rotor strength and critical speed analysis of a vertical long shaft fire pump connected with different shaft lengths. Scientific Re-ports, Vol. 12, Article ID. 9351, https://doi.org/10.1038/s41598-022-13320-z.
Gorbatyuk, S. et al. (2019). Influence of critical speed when working shafts with asymmetrically located monolithic weighting on the accuracy of work surfaces. Materials Today: Proceedings, Vol. 19, No. 5. https://doi.org/10.1016/j.matpr.2019.07.222
Senjanović, I. et al. (2019). Analytical procedures for torsional vibration analysis of Ship Power Transmission System. Engineering Structures, Vol. 178, https://doi.org/10.1016/j.engstruct.2018.10.035.
Kinnunen, K. et al. (2022). Method for adjusting torsional natural frequen-cies of powertrains with novel coupling design. Machines, Vol. 10, No. 3. https://doi.org/10.3390/machines10030162
