Journal of Engineering Sciences

Author(s):
Verbovyi A.¹, Khomenko V.¹, Neamtu C.², Pavlenko V.³, Simonovskiy V.¹, Pavlenko I.¹

Affiliation(s):
¹ Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine;
² Technical University of Cluj-Napoca, 28, Memorandumului St., 400114 Cluj-Napoca, Romania;
³ Machine Building College of Sumy State University, 17, Shevchenko Ave., 40011 Sumy, Ukraine

^*Corresponding Author’s Address: [email protected]

Issue: Volume 9, Issue 2 (2022)

Dates:
Submitted: September 5, 2022
Accepted for publication: November 23, 2022
Available online: November 29, 2022

Citation:
Verbovyi A., Khomenko V., Neamtu C., Pavlenko V., Simonovskiy V., Pavlenko I. (2022). Rotor dynamics of turbocompressor based on the finite element analysis and parameter identification approach. Journal of Engineering Sciences, Vol. 9(2), pp. D1-D5, doi: 10.21272/jes.2022.9(2).d1

DOI: 10.21272/jes.2022.9(2).d1

Research Area:  MECHANICAL ENGINEERING: Dynamics and Strength of Machines

Abstract. The article is devoted to improving methods for designing a finite element model of rotor dynamics. For this purpose, numerical implementation of the authors’ computer program “Critical frequencies of the rotor” was developed based on the computer algebra system MathCAD. As a result of the scientific work, a refined mathematical model of rotor dynamics using finite beam elements was created. This model considers the dependence of the radial stiffness characteristics of the bearing supports on the values of the critical frequencies. The reliability of the mathematical model was justified by the permissible differences of the obtained results within 2% compared with the results of finite element analysis using the ANSYS software. The theorem was also proven by the mutual location of the spectra of the natural and critical frequencies. Overall, the proposed scientific approach reduces preparation and machine time compared to numerical modeling using the ANSYS software without losing the accuracy of the calculations.

Keywords: centrifugal machine, process innovation, critical frequency, finite element analysis, Campbell diagram.

References:

1. Gupta, B., Hoshi, T., Yoshizawa, H. (2022). High durability variable geometry turbine for commercial vehicle turbochargers. Journal of Physics: Conference Series, Vol. 2217(1), 012080. DOI: 10.1088/1742-6596/2217/1/012080
2. Chen, X., Koppe, B., Lange, M., Chu, W., Mailach, R. (2021). Rotating instabilities in a low-speed single compressor rotor row with varying blade tip clearance. Energies, Vol. 14(24). DOI: 10.3390/en14248369
3. Lee, T.-W., Hong, D.-K. (2022). Rotor design, analysis and experimental validation of a high-speed permanent magnet synchronous motor for electric turbocharger. IEEE Access, Vol. 10, pp. 21955-21969. DOI: 10.1109/ACCESS.2022.3152525
4. Aihara, A., Mendoza, V., Goude, A., Bernhoff, H. (2022). Comparison of three-dimensional numerical methods for modeling of strut effect on the performance of a vertical axis wind turbine. Energies, Vol. 15(7). DOI: 10.3390/en15072361
5. Michel, N., Wei, P., Kong, Z., Sinha, A. K., Lin, X. (2022). Modeling and validation of electric multirotor unmanned aerial vehicle system energy dynamics. ETransportation, Vol. 12, 100173. DOI: 10.1016/j.etran.2022.100173
6. Jia, Z., Yang, Y., Zheng, Q., Deng, W. (2022). Dynamic analysis of jeffcott rotor under uncertainty based on chebyshev convex method. Mechanical Systems and Signal Processing, Vol. 167, 108603. DOI: 10.1016/j.ymssp.2021.108603
7. Li, C., Guo, X., Fu, J., Fu, W., Liu, Y., Chen, H., Wang, R, Li, Z. (2022). Design and analysis of a novel double-stator double-rotor motor drive system for in-wheel direct drive of electric vehicles. Machines, Vol. 10(1), 27. DOI: 10.3390/machines10010027
8. Dau, A.-T., Nistor, I., Gavrus, A. (2014). Numerical analysis concerning the harmfulness of crack turbine rotors using a multi- scale approach based on a dynamic finite element method. Applied Mechanics and Materials, Vol. 656, pp. 315-324. DOI: 10.4028/www.scientific.net/AMM.656.315
9. Pei, D., Lian, T. (2013). Study on some nonlinear dynamics problems of rotor-sliding bearing system with impact-rubbing. Information Technology Journal, Vol. 12(17), pp. 4089-4094. DOI: 10.3923/itj.2013.4089.4094
10. Pavlenko, I., Simonovskyi, V. (2015). Computer program “Critical frequencies of the rotor”. Certificate of authorship No. 59855, Ukraine.
11. Pavlenko, I. (2007). Finite Element Method in Problems of Oscillations of Mechanical Systems. Sumy State University, Sumy, Ukraine.
12. Champ, C. A., Stefani, F. A., Silvestri, P., Massardo, A. F. (2022). Hysteresis and torsional-lateral vibration coupling in a complex shaft line supported by hydrodyanamic journal bearings. Mechanical Systems and Signal Processing, Vol. 181, 109505. DOI: 10.1016/j.ymssp.2022.109505
13. Kumar, A., Kumar, D., Masal, R. (2021). Coupling misalignment detection and condition monitoring of a rotor assembly using FEA-based reduced-order modeling methods. 6th National Symposium on Rotor Dynamics, NSRD 2019. Springer. Lecture Notes in Mechanical Engineering, pp. 445-458. DOI: 10.1007/978-981-15-5701-9_36
14. Simonovskyi, V. (2012). Theory of Linear Oscillations. Sumy State University, Sumy, Ukraine.
15. Phuor, T., Yoon, G. (2022). Model order reduction for Campbell diagram analysis of shaft-disc-blade system in 3D finite elements. Structural Engineering and Mechanics, Vol. 81(4), pp. 411-428. DOI: 10.12989/sem.2022.81.4.411

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