Vibration Analysis of a Rotating Flywheel/Flexible Coupling System with Angular Misalignment and Rubbing Using Smoothed Pseudo Wigner–Ville Distributions

Journal of Vibration Engineering & Technologies volume 8, pages761–772(2020)Cite this article

Abstract

Purpose

Detection of early faults such as misalignment, rotor rubbing, shaft crack and bearing fault is necessary to avoid harmful and even catastrophic influences on rotating machinery.

Methods

In this paper, the accelerating horizontal and pitching vibration responses of flywheel/flexible coupling model of an actual diesel generator, with angular misalignment and rubbing faults, are investigated using the smoothed pseudo-Wigner–Ville distributions (SPWVDs).

Results and Conclusions

Numerical simulations are performed through the dynamical equations of the flywheel/flexible coupling system; the results suggest that when an angular misalignment fault occurs, the super-harmonic resonance of order 3 can be found in the horizontal and pitching vibration signals. Meanwhile, both the 3fr and 5fr components (i.e., 3 and 5 times of the rotating frequencies) can also be found in SPWV distribution spectra. When rubbing fault occurs, more abundant sub- and super-harmonic frequency components can be observed in SPWV distribution spectra. Overall, the investigation shows that the smoothed pseudo-Wigner–Ville distribution spectra reveal obvious differences between the acceleration responses of the rotating system with different faults.

This is a preview of subscription content, log in to check access.

Access options

Buy single article

Instant access to the full article PDF.

US$ 39.95

Tax calculation will be finalised during checkout.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

References

  1. 1.

    Liu Z, Wu K, Ding Q, Gu JX (2019) Engine misfire diagnosis based on the torsional vibration of the flexible coupling in a diesel generator set: simulation and experiment. J Vib Eng Technol. https://doi.org/10.1007/s42417-019-00097-1

    Article  Google Scholar 

  2. 2.

    Chiou S-B, Yen J-Y (2019) A survey of suspension component specifications and vehicle vibration measurements in an operational railway system. J Vib Eng Technol 7:415–431

    Article  Google Scholar 

  3. 3.

    Merkisz-Guranowska A, Waligórski M (2018) Recognition and separation technique of fault sources in off-road diesel engine based on vibroacoustic signal. J Vib Eng Technol 6:263–271

    Article  Google Scholar 

  4. 4.

    Gibbons CB (1976) Coupling Misalignment forced. In: Proceedings of the 5th turbomachinery symposium, gas turbine laboratories. Texas A&M University, College Station, pp 111–116

  5. 5.

    Lee YS, Lee CW (1999) modelling and vibration analysis of misaligned rotor-ball bearing systems. J Sound Vib 224:17–32

    Article  Google Scholar 

  6. 6.

    Al-Hussain KM (2003) Dynamic stability of two rigid rotors connected by a flexible coupling with angular misalignment. J Sound Vib 266:217–234

    Article  Google Scholar 

  7. 7.

    Sekhar AS, Prabhu BS (1995) Effects of coupling misalignment on vibrations of rotating machinery. J Sound Vib 185:655–671

    Article  Google Scholar 

  8. 8.

    Huang J, Wang Y (2018) Transient Analysis for a twin spool rotor with squeeze-film dampers considering blade loss. J Vib Eng Technol. https://doi.org/10.1007/s42417-018-0060-1

    Article  Google Scholar 

  9. 9.

    Prabhakar S, Sekhar AS, Mohanty AR (2001) Vibration analysis of a misaligned rotor ± coupling ± bearing system passing through the critical speed. Proc Inst Mech Eng Part C J Mech Eng Sci 215:1417–1428

    Article  Google Scholar 

  10. 10.

    Chandra NH, Sekhar AS (2016) Fault detection in rotor bearing systems using time frequency techniques. Mech Syst Signal Process 72–73:105–133

    Article  Google Scholar 

  11. 11.

    Beatty RF (1985) Differentiating rotor response due to radial rubbing. J Vib Acoust Stress Reliab Des 107:151–160

    Article  Google Scholar 

  12. 12.

    Ma H, Yu T, Han Q, Zhang Y, Wen B, Xuelian C (2009) Time–frequency features of two types of coupled rub-impact faults in rotor systems. J Sound Vib 321:1109–1128

    Article  Google Scholar 

  13. 13.

    Patel TH, Darpe AK (2009) Study of coast-up vibration response for rub detection. Mech Mach Theory 44:1570–1579

    Article  Google Scholar 

  14. 14.

    Peng Z, Chu F, He Y (2002) Vibration signal analysis and feature extraction based on reassigned wavelet scalogram. J Sound Vib 253:1087–1100

    Article  Google Scholar 

  15. 15.

    Tang X, Li Q (2016) Time-frequency analysis and wavelet transform. Science Press, Beijing

    Google Scholar 

  16. 16.

    Roshan-Ghias A, Shamsollahi MB, Mobed M, Behzad M (2007) Estimation of modal parameters using bilinear joint time–frequency distributions. Mech Syst Signal Process 21:2125–2136

    Article  Google Scholar 

  17. 17.

    Bossio JM, Bossio GR, De Angelo CH (2009) Angular misalignment in induction motors with flexible coupling. In: Proceedings of IEEE industrial electronics conference, 2009. IECON’09, Porto, pp 1033–1038

  18. 18.

    Yang Z, Cheng L, Wang W, Chen J (2012) Research on vibration characteristics of elastic pin coupling misalignment of pumps. China Rural Water Hydropower 9:144–147

    Google Scholar 

  19. 19.

    Ding Q (2004) Backward whirl and its suppression of a SFD-mounted rotor/casing system in passage through critical speed with rubs. J Vib Control 10:561–573

    Article  Google Scholar 

  20. 20.

    Chu F, Lu W (2005) Experimental observation of nonlinear vibrations in a rub-impact rotor system. J Sound Vib 283:621–643

    Article  Google Scholar 

  21. 21.

    Hu A, Xiang L, Zhang Y (2019) Experimental study on the intrawave frequency modulation characteristic of rotor rub and crack fault. Mech Syst Signal Process 118:209–225

    Article  Google Scholar 

Download references

Funding

This work is supported by the Natural Science Foundation of China through the Grants (51575378) and Natural Science Foundation of Tianjin City (Grant number 19JCZDJC38800).

Author information

Affiliations

  1. Department of Mechanics, Tianjin University, Tianjin, 300350, China

    Zhiwei Liu, Kun Wu, Zhisai Ma & Qian Ding

  2. Tianjin Key Laboratory of Nonlinear Dynamics and Control, Tianjin, 300350, China

    Zhiwei Liu, Kun Wu, Zhisai Ma & Qian Ding

Authors
  1. Zhiwei Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kun Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zhisai Ma
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Qian Ding
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Qian Ding.

Ethics declarations

Conflict of interest

The authors declared that they have no conflicts of interest with this work.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Liu, Z., Wu, K., Ma, Z. et al. Vibration Analysis of a Rotating Flywheel/Flexible Coupling System with Angular Misalignment and Rubbing Using Smoothed Pseudo Wigner–Ville Distributions. J. Vib. Eng. Technol. 8, 761–772 (2020). https://doi.org/10.1007/s42417-019-00189-y

Download citation

Keywords

  • Flywheel/flexible coupling system
  • Angular misalignment detection
  • Rubbing detection
  • Smoothed pseudo-Wigner–Ville distribution