Simulation modeling of non-contact vibration monitoring of axial compressor blades

Authors: A.A. Ravin, M.A. Maksimova, A.S. Egorov

 

Abstract

 

One of the most stressful and responsible elements of marine gas turbine engines are the working blades of axial compressors. Their breaks are the cause of severe emergency damage. An effective means of reducing the likelihood of such accidents is monitoring the main factor contributing to the accumulation of fatigue damage to the blades — the amplitude of their oscillations. The article presents the results of simulation modeling of contactless measurement of the amplitude of bending vibrations of compressor blades by discrete-phase method. It has been shown that the discrete-phase method makes it possible to obtain sufficiently reliable estimates of the amplitude of the blade oscillations, at which when multiplied they can lead to significant methodological errors.

 

Keywords: axial compressor, working blades, oscillation amplitude, simulation modeling.

 

References

1.    Zabloczky I.E., Korostelev Yu.A., Shipov R.A. Beskontaktnye izmereniya kolebany lopatok turbomashin [Non-contact measurements of turbo engines blades vibration]. Moscow, Mashinostroenie, 1977, 159 p.

2.    Doroshko S.M. et al. Sistema dlya beskontaktnogo opredeleniya amplitudy kolebany lopatok turbomashiny [System for non-contact measurements of turbo engines blades vibration] / Doroshko S.M., Moskvin V.V., Smorodin S.A. a.s. 661285, 1979, BI-17.

3.    Petrov B.N. Issledovanie i razrabotka tsifrovoj izmeritelnoj sistemy dlya opredeleniya parametrov vibratsii rabochikh lopatok turbomashin. Avto-referat dissertacii [Research and development of measurement systems for non-contact measurements of turbo engines blades vibration]. L., LETI, 1980, 28 p.

4.    Ravin A.A., Myasnikov Yu.N., Nelepin R.A. Sposob ispytaniya i tarirovki priborov beskontaktnogo izmereniya kolebany lopatki turbomashiny [One way to test and test equipment adjustment for non-contact measurements of turbo engines blades vibration]. a.s. 717559, 1980, BI-7

 

About authors:

 

A.A. Ravin, DSc, St. Petersburg State Maritime Technical University (SMTU), St. Petersburg

M.A. Maksimova, PhD, associate professor, SMTU, St. Petersburg

A.S. Egorov, SMTU, St. Petersburg

Issue: 68/69 (2022)

For citation: A.A. Ravin, M.A. Maksimova, A.S. Egorov. Simulation modeling of non-contact vibration monitoring of axial compressor blades. Research Bulletin by Russian Maritime Register of Shipping. 2022, No. 68/69, pp. 130-134.

UDC 62-752

Pp: 130-134